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Events: Love Triangle in Integration Testing | Software Architecture Conference
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Aug 6, 2025
Some years ago, events appeared in the IT world with the idea of decoupling many applications or microservices, improving performance, reducing complexity, and allowing change flows. Some companies adopted this new paradigm instead of the classic synchronic world where the client needs to wait until the provider answers; initially, everything looked fine, but after some months, the problems appeared. The developers adopted this new paradigm to reduce the complexity but, at the same time, introduced another problem in how to test the application simply. What happens if the events need to modify or read some information for a database? How can we check if the information in the database was modified? This talk will delve into the main problems of not creating integration tests that check whether the application works fine, showing different alternatives with their pros and cons. To conclude the talk, you will see how to create integration tests that check if some scenarios work on an application that uses MongoDB and SQS combined with Karate. 🔗 Conference Website: https://softwarearchitecture.live 📺 CSharp TV - Dev Streaming Destination http://csharp.tv 🌎 C# Corner - Community of Software and Data Developers https://www.c-sharpcorner.com #CSharpTV #CSharpCorner #CSharp #SoftwareArchitectureConf
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well let me introduce me quickly my name
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well let me introduce me quickly my name
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well let me introduce me quickly my name is Ando um I work as developer using
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is Ando um I work as developer using
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is Ando um I work as developer using different languages some of them appear
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different languages some of them appear
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different languages some of them appear on the presentation there are another
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on the presentation there are another
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on the presentation there are another ones that I use it not frequently but
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ones that I use it not frequently but
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ones that I use it not frequently but for example C hcll python most of them
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for example C hcll python most of them
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for example C hcll python most of them not appear in the presentation but I use
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not appear in the presentation but I use
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not appear in the presentation but I use it uh in some period of my life I
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it uh in some period of my life I
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it uh in some period of my life I participate as technical reviewer on
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participate as technical reviewer on
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participate as technical reviewer on many editorials they send me a
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many editorials they send me a
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many editorials they send me a manuscript a book or something I give my
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manuscript a book or something I give my
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manuscript a book or something I give my feedback I publish um some courses and
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feedback I publish um some courses and
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feedback I publish um some courses and books um some of in the presentation and
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books um some of in the presentation and
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books um some of in the presentation and I participate as speaker on different
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I participate as speaker on different
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I participate as speaker on different conference you have my contact
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conference you have my contact
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conference you have my contact information on the presentation so if
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information on the presentation so if
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information on the presentation so if you have any dudes any question after
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you have any dudes any question after
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you have any dudes any question after this talk contact me and I will try to
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this talk contact me and I will try to
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this talk contact me and I will try to help you as soon as possible so what is
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help you as soon as possible so what is
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help you as soon as possible so what is our problem today well we work in a
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our problem today well we work in a
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our problem today well we work in a company which have a lot of
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company which have a lot of
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company which have a lot of microservices and the main problem is
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microservices and the main problem is
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microservices and the main problem is like okay we decided to migrate to use
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like okay we decided to migrate to use
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like okay we decided to migrate to use an event driven architecture we say okay
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an event driven architecture we say okay
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an event driven architecture we say okay we don't want more HTTP or the the the
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we don't want more HTTP or the the the
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we don't want more HTTP or the the the most common type of communication we we
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most common type of communication we we
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most common type of communication we we need to use events because most of the
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need to use events because most of the
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need to use events because most of the company USE events
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company USE events
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company USE events and here appear some kind of problems
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and here appear some kind of problems
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and here appear some kind of problems when we need to check if everything
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when we need to check if everything
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when we need to check if everything works fine or not the first problem that
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works fine or not the first problem that
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works fine or not the first problem that fear is okay how I can check if
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fear is okay how I can check if
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fear is okay how I can check if everything works fine or not because in
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everything works fine or not because in
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everything works fine or not because in a common application I can use different
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a common application I can use different
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a common application I can use different framework or different libraries to do a
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framework or different libraries to do a
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framework or different libraries to do a simple HTTP request and wait until to
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simple HTTP request and wait until to
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simple HTTP request and wait until to have the response but in this case it's
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have the response but in this case it's
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have the response but in this case it's not
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not
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not possible hold so I can check with this
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possible hold so I can check with this
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possible hold so I can check with this kind of architecture if something was
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kind of architecture if something was
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kind of architecture if something was modified into the database imagine that
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modified into the database imagine that
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modified into the database imagine that you need to create a test that do all
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you need to create a test that do all
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you need to create a test that do all the things send an event do something
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the things send an event do something
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the things send an event do something and is an event-driven architecture
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and is an event-driven architecture
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and is an event-driven architecture perhaps not um send an event create a
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perhaps not um send an event create a
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perhaps not um send an event create a new event or yes but you need to check
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new event or yes but you need to check
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new event or yes but you need to check if the changes appear on the database or
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if the changes appear on the database or
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if the changes appear on the database or not and
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not and
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not and perhaps in some cases you publish a new
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perhaps in some cases you publish a new
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perhaps in some cases you publish a new events so here you have a complex
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events so here you have a complex
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events so here you have a complex scenario it's not the common scenario
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scenario it's not the common scenario
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scenario it's not the common scenario where you do a simple HTTP and wait no
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where you do a simple HTTP and wait no
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where you do a simple HTTP and wait no because different things could
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because different things could
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because different things could happen and a unit test of course could
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happen and a unit test of course could
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happen and a unit test of course could cover some aspects okay I can check if
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cover some aspects okay I can check if
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cover some aspects okay I can check if some part of my logic works like okay I
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some part of my logic works like okay I
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some part of my logic works like okay I want to check if the persistent layer
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want to check if the persistent layer
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want to check if the persistent layer works or not or my the the the layer
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works or not or my the the the layer
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works or not or my the the the layer that is responsible to receive the HTTP
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that is responsible to receive the HTTP
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that is responsible to receive the HTTP request or the business logic great but
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request or the business logic great but
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request or the business logic great but how we can check
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how we can check
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how we can check everything together the database the the
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everything together the database the the
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everything together the database the the process de the push de and in a real
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context let's see more or less the
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context let's see more or less the
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context let's see more or less the interaction between this application a
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interaction between this application a
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interaction between this application a send an event application X receive the
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send an event application X receive the
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send an event application X receive the event and do
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event and do
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event and do something into the database change the
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something into the database change the
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something into the database change the the the application or change the status
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the the application or change the status
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the the application or change the status of something and after that push a new
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of something and after that push a new
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of something and after that push a new event so you don't have the possibility
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event so you don't have the possibility
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event so you don't have the possibility to create a
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to create a
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to create a test or yes but it's so complex that
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test or yes but it's so complex that
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test or yes but it's so complex that check if application X works fine or not
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check if application X works fine or not
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check if application X works fine or not Andre I'm I'm sorry to interrupt but
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Andre I'm I'm sorry to interrupt but
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Andre I'm I'm sorry to interrupt but your slides are not changing oh
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sorry uh why this
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happen
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H let
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H let
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H let me do
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again uh yeah I see your slides yes ah
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again uh yeah I see your slides yes ah
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again uh yeah I see your slides yes ah yeah now yes
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okay okay this is the this scenario I
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okay okay this is the this scenario I
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okay okay this is the this scenario I have an application another application
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have an application another application
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have an application another application and the communication with the
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and the communication with the
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and the communication with the database so why create a test is
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database so why create a test is
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database so why create a test is relevant for us why
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relevant for us why
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relevant for us why this a different kind of test like the
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this a different kind of test like the
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this a different kind of test like the integration test or a end to end test
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integration test or a end to end test
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integration test or a end to end test anything is not connected with the the
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anything is not connected with the the
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anything is not connected with the the unit test could help us first because
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unit test could help us first because
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unit test could help us first because reduce the risk that something bad
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reduce the risk that something bad
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reduce the risk that something bad happen if I create only a unit test I
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happen if I create only a unit test I
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happen if I create only a unit test I don't validate if the external
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don't validate if the external
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don't validate if the external communication works fine or not so I
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communication works fine or not so I
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communication works fine or not so I will publish or deploy something on some
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will publish or deploy something on some
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will publish or deploy something on some environment like staging and only check
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environment like staging and only check
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environment like staging and only check my um partial functional the the methods
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my um partial functional the the methods
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my um partial functional the the methods or the the the logic but not the entire
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or the the the logic but not the entire
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or the the the logic but not the entire integration I'm not sure if everything
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integration I'm not sure if everything
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integration I'm not sure if everything works fine or not
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works fine or not
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works fine or not how I can verify the problems because
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how I can verify the problems because
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how I can verify the problems because one of the things that I need to be sure
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one of the things that I need to be sure
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one of the things that I need to be sure is that when I send or create an event a
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is that when I send or create an event a
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is that when I send or create an event a new event the my application X create a
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new event the my application X create a
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new event the my application X create a new event is have the all the
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new event is have the all the
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new event is have the all the information that I want the same format
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information that I want the same format
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information that I want the same format that the consumers could process so I
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that the consumers could process so I
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that the consumers could process so I need to do all these kind of
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need to do all these kind of
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need to do all these kind of things it's not a unit test again I unit
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things it's not a unit test again I unit
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things it's not a unit test again I unit test not check the entire behavior of my
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test not check the entire behavior of my
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test not check the entire behavior of my application not check the integration
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application not check the integration
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application not check the integration with external
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with external
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with external components and the idea of create this
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components and the idea of create this
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components and the idea of create this kind of test is that you need to check
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kind of test is that you need to check
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kind of test is that you need to check all the scenarios not like the Happy
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all the scenarios not like the Happy
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all the scenarios not like the Happy path the success scenario where
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path the success scenario where
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path the success scenario where everything works the idea is okay I need
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everything works the idea is okay I need
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everything works the idea is okay I need to check what happen if my application
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to check what happen if my application
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to check what happen if my application receive a um event with a wrong format
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receive a um event with a wrong format
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receive a um event with a wrong format or an application or my application
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or an application or my application
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or an application or my application receive an event with an error what
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receive an event with an error what
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receive an event with an error what happened with my application which is
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happened with my application which is
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happened with my application which is the behavior of my application in that
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context so which libraries more or less
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context so which libraries more or less
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context so which libraries more or less cover all these problems how I can do it
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cover all these problems how I can do it
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cover all these problems how I can do it in in a way that is more or less
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in in a way that is more or less
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in in a way that is more or less agnostic to the the the libraries or the
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agnostic to the the the libraries or the
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agnostic to the the the libraries or the language that I use first one test
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language that I use first one test
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language that I use first one test container container give me the
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container container give me the
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container container give me the possibility to run um different
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possibility to run um different
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possibility to run um different containers using Docker behind the
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containers using Docker behind the
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containers using Docker behind the scenes and in most of the cases is
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scenes and in most of the cases is
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scenes and in most of the cases is agnostic to the language that have
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agnostic to the language that have
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agnostic to the language that have support in different languages so for me
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support in different languages so for me
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support in different languages so for me it's okay I don't need uh to uh learn
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it's okay I don't need uh to uh learn
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it's okay I don't need uh to uh learn different libraries is just like
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different libraries is just like
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different libraries is just like understand how Implement on different
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understand how Implement on different
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understand how Implement on different languages as container but it's the same
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languages as container but it's the same
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languages as container but it's the same local stack in this case because it's a
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local stack in this case because it's a
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local stack in this case because it's a tool that simulate most of the AWS uh
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tool that simulate most of the AWS uh
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tool that simulate most of the AWS uh services so in the case that you use A3
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services so in the case that you use A3
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services so in the case that you use A3 to um like an NP to to push a file or
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to um like an NP to to push a file or
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to um like an NP to to push a file or use squ or NSS you can simulate the the
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use squ or NSS you can simulate the the
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use squ or NSS you can simulate the the behavior without need to use the real
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behavior without need to use the real
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behavior without need to use the real infrastructure of your company because
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infrastructure of your company because
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infrastructure of your company because the main problem is okay I can create a
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the main problem is okay I can create a
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the main problem is okay I can create a test and check uh okay and where is the
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test and check uh okay and where is the
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test and check uh okay and where is the the Quee of your application an know
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the Quee of your application an know
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the Quee of your application an know it's a real Quee on stage or develop an
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it's a real Quee on stage or develop an
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it's a real Quee on stage or develop an environment well perhaps your
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environment well perhaps your
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environment well perhaps your application locally could listen this
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application locally could listen this
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application locally could listen this event but at the same time some
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event but at the same time some
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event but at the same time some application stage could listen the same
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application stage could listen the same
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application stage could listen the same event and produce a bad behavior on the
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event and produce a bad behavior on the
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event and produce a bad behavior on the environment karate uh is a tool to write
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environment karate uh is a tool to write
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environment karate uh is a tool to write uh test using bdd is is a good tool to
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uh test using bdd is is a good tool to
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uh test using bdd is is a good tool to write in a simple way test without need
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write in a simple way test without need
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write in a simple way test without need to know a about the language or the
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to know a about the language or the
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to know a about the language or the framework that you use behind the scenes
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framework that you use behind the scenes
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framework that you use behind the scenes is not
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is not
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is not necessar and last use uh res hat which
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necessar and last use uh res hat which
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necessar and last use uh res hat which is a tool that provide me access in this
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is a tool that provide me access in this
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is a tool that provide me access in this case to a um non relational database
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case to a um non relational database
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case to a um non relational database like
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like
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like mongodb Expos me like a happy rest to
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mongodb Expos me like a happy rest to
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mongodb Expos me like a happy rest to consume uh from different endpoints the
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consume uh from different endpoints the
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consume uh from different endpoints the information that exist in the database
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information that exist in the database
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information that exist in the database so with this kind of combination of
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so with this kind of combination of
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so with this kind of combination of tools or libraries you can create more
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tools or libraries you can create more
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tools or libraries you can create more or less a test that check
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or less a test that check
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or less a test that check everything uh which is connected with
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everything uh which is connected with
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everything uh which is connected with your application all the external
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your application all the external
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your application all the external Services of your
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Services of your
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Services of your microservices okay how is the syntax of
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microservices okay how is the syntax of
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microservices okay how is the syntax of cor because not all the people perhaps
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cor because not all the people perhaps
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cor because not all the people perhaps know how this uh looks
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know how this uh looks
9:35
know how this uh looks like and the idea is more or less this
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like and the idea is more or less this
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like and the idea is more or less this in this case I create a I put an example
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in this case I create a I put an example
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in this case I create a I put an example using springo springo is a framework on
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using springo springo is a framework on
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using springo springo is a framework on Java but it's the same the name of the
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Java but it's the same the name of the
9:48
Java but it's the same the name of the feature is is like a description and you
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feature is is like a description and you
9:52
feature is is like a description and you have like
9:53
have like
9:53
have like a part or group or section of on the
9:57
a part or group or section of on the
9:57
a part or group or section of on the file where you can put all the things
9:59
file where you can put all the things
9:59
file where you can put all the things related with the background of the of
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related with the background of the of
10:02
related with the background of the of your test and in the section of the
10:05
your test and in the section of the
10:05
your test and in the section of the scenario you put all the things that you
10:08
scenario you put all the things that you
10:08
scenario you put all the things that you want to do in this case I want to
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want to do in this case I want to
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want to do in this case I want to execute in the given section I will to
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execute in the given section I will to
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execute in the given section I will to execute um HTTP request using the get
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execute um HTTP request using the get
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execute um HTTP request using the get method and then check if the status of
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method and then check if the status of
10:24
method and then check if the status of the response is 200 and the response
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the response is 200 and the response
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the response is 200 and the response more more or less have this format
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more more or less have this format
10:32
more more or less have this format and you you don't write nothing about
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and you you don't write nothing about
10:35
and you you don't write nothing about Java here or or any language or python
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Java here or or any language or python
10:40
Java here or or any language or python is agnostic anyone could understand more
10:44
is agnostic anyone could understand more
10:44
is agnostic anyone could understand more or less this the this
10:50
idea and okay which are the the pros or
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idea and okay which are the the pros or
10:54
idea and okay which are the the pros or the cons of using this
10:57
the cons of using this
10:57
the cons of using this approach first not affect the real
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approach first not affect the real
11:00
approach first not affect the real infrastructure of your uh company the
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infrastructure of your uh company the
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infrastructure of your uh company the idea is to keep isolate uh your
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idea is to keep isolate uh your
11:07
idea is to keep isolate uh your application with the
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application with the
11:08
application with the test second you can check the endpoints
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test second you can check the endpoints
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test second you can check the endpoints on the database and check if the the
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on the database and check if the the
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on the database and check if the the modification are okay or not the content
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modification are okay or not the content
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modification are okay or not the content on on the database or any collection
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on on the database or any collection
11:22
on on the database or any collection change or
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change or
11:24
change or not and you can simulate elent like
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not and you can simulate elent like
11:29
not and you can simulate elent like producing or reception uh listen an
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producing or reception uh listen an
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producing or reception uh listen an event again is agnostic to the language
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event again is agnostic to the language
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event again is agnostic to the language you can have an application that use C
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you can have an application that use C
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you can have an application that use C and another one that use Java and
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and another one that use Java and
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and another one that use Java and another one that use go the idea is like
11:46
another one that use go the idea is like
11:46
another one that use go the idea is like create in a separate folder and do all
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create in a separate folder and do all
11:50
create in a separate folder and do all this kind of configuration which I will
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this kind of configuration which I will
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this kind of configuration which I will show you in a couple of
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show you in a couple of
11:55
show you in a couple of meetings the main problem is takes more
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meetings the main problem is takes more
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meetings the main problem is takes more time to be executed because uh you need
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time to be executed because uh you need
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time to be executed because uh you need to run different containers different
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to run different containers different
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to run different containers different containers of of Docker uh one to
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containers of of Docker uh one to
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containers of of Docker uh one to simulate the the all the infrastructure
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simulate the the all the infrastructure
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simulate the the all the infrastructure of AWS another one to communicate to the
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of AWS another one to communicate to the
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of AWS another one to communicate to the with the database and many other things
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with the database and many other things
12:18
with the database and many other things so it's not like okay not run this in in
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so it's not like okay not run this in in
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so it's not like okay not run this in in in the same um Step imagine that you
12:27
in the same um Step imagine that you
12:27
in the same um Step imagine that you have a pipeline in the same step that
12:29
have a pipeline in the same step that
12:29
have a pipeline in the same step that you have your unit test separate in a
12:32
you have your unit test separate in a
12:32
you have your unit test separate in a different step in in the
12:34
different step in in the
12:34
different step in in the pipeline and the main problem is not all
12:38
pipeline and the main problem is not all
12:38
pipeline and the main problem is not all the database that exist have support
12:42
the database that exist have support
12:42
the database that exist have support like expose or give me a a Docker image
12:45
like expose or give me a a Docker image
12:45
like expose or give me a a Docker image that expose me um the the information
12:49
that expose me um the the information
12:49
that expose me um the the information that exist in the database for example
12:51
that exist in the database for example
12:51
that exist in the database for example there is one uh from to to use on R the
12:55
there is one uh from to to use on R the
12:55
there is one uh from to to use on R the other one with Cassandra and one with uh
13:00
other one with Cassandra and one with uh
13:00
other one with Cassandra and one with uh my SQL database but for example for
13:03
my SQL database but for example for
13:03
my SQL database but for example for Progress not exist so you need to find
13:07
Progress not exist so you need to find
13:07
Progress not exist so you need to find the correct tool in this case I will
13:09
the correct tool in this case I will
13:09
the correct tool in this case I will show you with
13:11
show you with
13:12
show you with mongodb how this process works hold
13:16
mongodb how this process works hold
13:16
mongodb how this process works hold this uh steps well
13:20
this uh steps well
13:20
this uh steps well first the is like set the context the
13:23
first the is like set the context the
13:23
first the is like set the context the idea is that you insert or produce the
13:26
idea is that you insert or produce the
13:26
idea is that you insert or produce the event and push to a specific q and load
13:30
event and push to a specific q and load
13:30
event and push to a specific q and load all the information that you need or
13:32
all the information that you need or
13:32
all the information that you need or your application need to work in the
13:34
your application need to work in the
13:34
your application need to work in the database imagine that you need to have a
13:38
database imagine that you need to have a
13:38
database imagine that you need to have a specific role or information about one
13:41
specific role or information about one
13:41
specific role or information about one user and when you listen an event you
13:45
user and when you listen an event you
13:45
user and when you listen an event you change something in the in the row on
13:48
change something in the in the row on
13:48
change something in the in the row on the database related with that
13:51
the database related with that
13:51
the database related with that user so it's like a
13:53
user so it's like a
13:53
user so it's like a constraint second one you execute all
13:56
constraint second one you execute all
13:56
constraint second one you execute all the
13:57
the
13:57
the test after that you check the results
13:59
test after that you check the results
13:59
test after that you check the results and the last
14:01
and the last
14:01
and the last part is um remove any kind of possible
14:07
part is um remove any kind of possible
14:07
part is um remove any kind of possible events because you push event and to
14:11
events because you push event and to
14:11
events because you push event and to some place imagine that you in the local
14:13
some place imagine that you in the local
14:13
some place imagine that you in the local stack simulate the real infrastructure
14:16
stack simulate the real infrastructure
14:16
stack simulate the real infrastructure or AWS so my test my one of my test push
14:21
or AWS so my test my one of my test push
14:22
or AWS so my test my one of my test push an event and I have another one which is
14:25
an event and I have another one which is
14:25
an event and I have another one which is not connected that
14:27
not connected that
14:27
not connected that listen the same EV or the same Q so one
14:31
listen the same EV or the same Q so one
14:31
listen the same EV or the same Q so one test could affect another one so you
14:35
test could affect another one so you
14:35
test could affect another one so you need to remove the event each time that
14:38
need to remove the event each time that
14:38
need to remove the event each time that you finish the execution if you don't
14:41
you finish the execution if you don't
14:41
you finish the execution if you don't check if you check if the event is
14:44
check if you check if the event is
14:44
check if you check if the event is produced more or less it's the
14:47
same well here is the repository of the
14:52
same well here is the repository of the
14:52
same well here is the repository of the GitHub let me uh show you
14:59
here are more or less the the repository
15:02
here are more or less the the repository
15:02
here are more or less the the repository with the docker file and but is an
15:06
with the docker file and but is an
15:06
with the docker file and but is an application yet which you can run using
15:10
application yet which you can run using
15:10
application yet which you can run using here the docker compos but let me show
15:13
here the docker compos but let me show
15:13
here the docker compos but let me show you some little
15:15
you some little
15:15
you some little things first one the docker
15:18
things first one the docker
15:18
things first one the docker compost here I have the configuration of
15:22
compost here I have the configuration of
15:22
compost here I have the configuration of the local stack it's a simple
15:24
the local stack it's a simple
15:24
the local stack it's a simple configuration on the repository you have
15:27
configuration on the repository you have
15:27
configuration on the repository you have all the things it's like
15:30
all the things it's like
15:30
all the things it's like Docker image and only
15:34
Docker image and only
15:34
Docker image and only enable uh some Services I put the region
15:38
enable uh some Services I put the region
15:38
enable uh some Services I put the region and many other things and a bash file
15:44
and many other things and a bash file
15:44
and many other things and a bash file which uh have different functions to
15:47
which uh have different functions to
15:47
which uh have different functions to create a queue a topic or many many
15:50
create a queue a topic or many many
15:50
create a queue a topic or many many things so you can reuse it it's not just
15:53
things so you can reuse it it's not just
15:53
things so you can reuse it it's not just for this um Conference of this talk you
15:56
for this um Conference of this talk you
15:56
for this um Conference of this talk you can reuse it uh with any kind of problem
16:00
can reuse it uh with any kind of problem
16:00
can reuse it uh with any kind of problem here at the end I have the creation of
16:03
here at the end I have the creation of
16:03
here at the end I have the creation of the the the topics and list
16:08
the the the topics and list
16:08
the the the topics and list everything and in the docker file you
16:13
everything and in the docker file you
16:13
everything and in the docker file you have here the rest H and you can use it
16:17
have here the rest H and you can use it
16:17
have here the rest H and you can use it without any problem it's not just
16:19
without any problem it's not just
16:19
without any problem it's not just connected with the integration test if
16:20
connected with the integration test if
16:21
connected with the integration test if you want you can use it uh in your
16:23
you want you can use it uh in your
16:23
you want you can use it uh in your machine and configure everything to
16:26
machine and configure everything to
16:26
machine and configure everything to communicate with the the the database
16:29
communicate with the the the database
16:29
communicate with the the the database so here I have a Swagger
16:34
so here I have a Swagger
16:34
so here I have a Swagger API my application is running just to to
16:38
API my application is running just to to
16:38
API my application is running just to to show you that everything works fine and
16:41
show you that everything works fine and
16:41
show you that everything works fine and I will
16:43
I will
16:43
I will create new uh is a APA that save the
16:47
create new uh is a APA that save the
16:47
create new uh is a APA that save the information about reservation of uh
16:49
information about reservation of uh
16:49
information about reservation of uh flights so I push new um new
16:55
flights so I push new um new
16:55
flights so I push new um new reservations and okay it's an simpl I I
16:59
reservations and okay it's an simpl I I
16:59
reservations and okay it's an simpl I I don't show you nothing
17:02
don't show you nothing
17:02
don't show you nothing new but let me show you how with uh red
17:08
new but let me show you how with uh red
17:08
new but let me show you how with uh red her you can see this is the the the port
17:14
her you can see this is the the the port
17:14
her you can see this is the the the port and the in my local host I run
17:17
and the in my local host I run
17:17
and the in my local host I run in um res her and this is the name of
17:20
in um res her and this is the name of
17:20
in um res her and this is the name of the collection so I put play
17:24
the collection so I put play
17:24
the collection so I put play reservation
17:26
reservation
17:26
reservation reservation and I he here I have all the
17:29
reservation and I he here I have all the
17:29
reservation and I he here I have all the information from my database these
17:32
information from my database these
17:32
information from my database these are uh rows from mongodb all the
17:36
are uh rows from mongodb all the
17:36
are uh rows from mongodb all the information that I have on my
17:38
information that I have on my
17:38
information that I have on my machine which okay it's great um but how
17:43
machine which okay it's great um but how
17:43
machine which okay it's great um but how I can connect all these things in
17:47
I can connect all these things in
17:47
I can connect all these things in karate and with these kind of
17:50
karate and with these kind of
17:50
karate and with these kind of things I will stop this one because I'm
17:54
things I will stop this one because I'm
17:54
things I will stop this one because I'm running an
17:57
running an
17:57
running an application and let me show you how you
18:00
application and let me show you how you
18:00
application and let me show you how you can combine all these things uh don't
18:03
can combine all these things uh don't
18:03
can combine all these things uh don't pay attention to the the code because
18:05
pay attention to the the code because
18:05
pay attention to the the code because this is a application in Java but it's
18:09
this is a application in Java but it's
18:09
this is a application in Java but it's not the the our problem our problem is
18:13
not the the our problem our problem is
18:13
not the the our problem our problem is connected with events so let me show you
18:18
connected with events so let me show you
18:18
connected with events so let me show you how uh you can combine all these things
18:21
how uh you can combine all these things
18:21
how uh you can combine all these things karate and local stack red heart in a
18:25
karate and local stack red heart in a
18:25
karate and local stack red heart in a simple script or in a simple test
18:29
simple script or in a simple test
18:29
simple script or in a simple test let me show you this is one of my Kate
18:33
let me show you this is one of my Kate
18:33
let me show you this is one of my Kate test which simulate the same thing that
18:36
test which simulate the same thing that
18:36
test which simulate the same thing that I do create a reservation like using the
18:40
I do create a reservation like using the
18:40
I do create a reservation like using the postman or the Swagger to create a
18:42
postman or the Swagger to create a
18:42
postman or the Swagger to create a reservation to send a
18:44
reservation to send a
18:44
reservation to send a request so I say okay this is the the
18:48
request so I say okay this is the the
18:48
request so I say okay this is the the URL where you need to do the
18:52
URL where you need to do the
18:52
URL where you need to do the request after that please instead to
18:56
request after that please instead to
18:56
request after that please instead to write all the body of the request and
18:58
write all the body of the request and
18:58
write all the body of the request and the resp response it's not the idea and
19:02
the resp response it's not the idea and
19:02
the resp response it's not the idea and it's something that okay it's not
19:04
it's something that okay it's not
19:04
it's something that okay it's not necessary that I write in a test so
19:07
necessary that I write in a test so
19:07
necessary that I write in a test so please put in a file like this and read
19:10
please put in a file like this and read
19:10
please put in a file like this and read the information so I put in a separate
19:13
the information so I put in a separate
19:13
the information so I put in a separate file uh file sorry and you can see here
19:19
file uh file sorry and you can see here
19:19
file uh file sorry and you can see here it's a simple HTTP request or the body
19:22
it's a simple HTTP request or the body
19:22
it's a simple HTTP request or the body of HTTP request like appear on on open
19:26
of HTTP request like appear on on open
19:26
of HTTP request like appear on on open AI or or Swagger so I put in a separate
19:30
AI or or Swagger so I put in a separate
19:30
AI or or Swagger so I put in a separate file and say okay read the file and put
19:33
file and say okay read the file and put
19:33
file and say okay read the file and put in this
19:34
in this
19:34
in this variable and do a HTTP request
19:39
variable and do a HTTP request
19:39
variable and do a HTTP request here and with this body with the
19:43
here and with this body with the
19:43
here and with this body with the variable that contain this body this one
19:46
variable that contain this body this one
19:46
variable that contain this body this one sorry this one with this content tyag
19:49
sorry this one with this content tyag
19:49
sorry this one with this content tyag with this method and check the status
19:51
with this method and check the status
19:51
with this method and check the status and nothing more this is more or less
19:52
and nothing more this is more or less
19:52
and nothing more this is more or less the same the same scenario I don't
19:54
the same the same scenario I don't
19:54
the same the same scenario I don't change
19:55
change
19:55
change nothing okay how we can do the
19:59
nothing okay how we can do the
19:59
nothing okay how we can do the combination where appear the database
20:02
combination where appear the database
20:02
combination where appear the database where I appears that that you can check
20:05
where I appears that that you can check
20:05
where I appears that that you can check if everything works fine or not remember
20:07
if everything works fine or not remember
20:07
if everything works fine or not remember that I say okay I have a
20:10
that I say okay I have a
20:10
that I say okay I have a folder call it
20:12
folder call it
20:12
folder call it Docker with all this information with
20:15
Docker with all this information with
20:15
Docker with all this information with all the local stack and red heart
20:18
all the local stack and red heart
20:18
all the local stack and red heart configuration and the configuration it's
20:20
configuration and the configuration it's
20:20
configuration and the configuration it's simple you can download the from the
20:23
simple you can download the from the
20:23
simple you can download the from the official documentation and the rest
20:26
official documentation and the rest
20:26
official documentation and the rest heart and local stack and put theile
20:29
heart and local stack and put theile
20:29
heart and local stack and put theile inside and just Mount the the volumes
20:33
inside and just Mount the the volumes
20:33
inside and just Mount the the volumes with the
20:34
with the
20:34
with the information nothing strange and I only
20:38
information nothing strange and I only
20:38
information nothing strange and I only create a simple
20:40
create a simple
20:40
create a simple class here which is in Java but is the
20:44
class here which is in Java but is the
20:44
class here which is in Java but is the only code that you need to
20:46
only code that you need to
20:46
only code that you need to write which use Docker
20:49
write which use Docker
20:49
write which use Docker compose um test container sorry and run
20:52
compose um test container sorry and run
20:52
compose um test container sorry and run the docker compos file with this
20:55
the docker compos file with this
20:55
the docker compos file with this instruction it's nothing new or
20:59
instruction it's nothing new or
20:59
instruction it's nothing new or range but where is the the magic of this
21:03
range but where is the the magic of this
21:03
range but where is the the magic of this let me show you
21:05
let me show you
21:05
let me show you another scenario
21:08
another scenario
21:08
another scenario here let me show you this one because
21:10
here let me show you this one because
21:10
here let me show you this one because it's a combination of all these kind of
21:13
it's a combination of all these kind of
21:13
it's a combination of all these kind of things I want to create or simulate the
21:18
things I want to create or simulate the
21:18
things I want to create or simulate the a scenario where I save a reservation
21:20
a scenario where I save a reservation
21:20
a scenario where I save a reservation save something in the database and when
21:23
save something in the database and when
21:24
save something in the database and when I say something into the database my
21:26
I say something into the database my
21:26
I say something into the database my application throw or create a new event
21:30
application throw or create a new event
21:30
application throw or create a new event so I need to do different
21:35
so I need to do different
21:35
so I need to do different things okay let me first this is more or
21:39
things okay let me first this is more or
21:39
things okay let me first this is more or less the same scenario that the previous
21:42
less the same scenario that the previous
21:42
less the same scenario that the previous one is like a like a copy and
21:45
one is like a like a copy and
21:45
one is like a like a copy and paste this is payment confirm it so this
21:49
paste this is payment confirm it so this
21:49
paste this is payment confirm it so this section is the same don't
21:52
section is the same don't
21:52
section is the same don't change and
21:54
change and
21:54
change and now I don't change nothing I don't check
21:58
now I don't change nothing I don't check
21:58
now I don't change nothing I don't check if anything it's okay or not I will
22:00
if anything it's okay or not I will
22:01
if anything it's okay or not I will create an event using local
22:03
create an event using local
22:03
create an event using local stack so I Define the body of my
22:08
stack so I Define the body of my
22:08
stack so I Define the body of my event here and there is a file here
22:12
event here and there is a file here
22:12
event here and there is a file here which is payment query this is a um um
22:17
which is payment query this is a um um
22:17
which is payment query this is a um um event that appear on
22:21
event that appear on
22:21
event that appear on AWS with the with the format it's the
22:24
AWS with the with the format it's the
22:24
AWS with the with the format it's the same I Define the the query on the the Q
22:28
same I Define the the query on the the Q
22:28
same I Define the the query on the the Q story
22:29
story
22:29
story and many other things so okay I create
22:33
and many other things so okay I create
22:33
and many other things so okay I create the the body of them and say to this
22:35
the the body of them and say to this
22:35
the the body of them and say to this local stack URL which I Define
22:40
local stack URL which I Define
22:40
local stack URL which I Define here and say okay throw the event send
22:44
here and say okay throw the event send
22:44
here and say okay throw the event send the event to the the
22:48
the event to the the
22:48
the event to the the infrastructure uh or the the the stack
22:50
infrastructure uh or the the the stack
22:50
infrastructure uh or the the the stack or local stack which
22:53
or local stack which
22:53
or local stack which simulate and what I want to do after
22:55
simulate and what I want to do after
22:55
simulate and what I want to do after that because okay my application
22:59
that because okay my application
22:59
that because okay my application save something into the
23:01
save something into the
23:02
save something into the database my request finish because it's
23:04
database my request finish because it's
23:04
database my request finish because it's synchronic it's like okay create an new
23:07
synchronic it's like okay create an new
23:07
synchronic it's like okay create an new event Le okay I finish what
23:10
event Le okay I finish what
23:10
event Le okay I finish what more okay well I my application is
23:14
more okay well I my application is
23:14
more okay well I my application is running and at some point of the life I
23:18
running and at some point of the life I
23:18
running and at some point of the life I send an event like this one and my
23:23
send an event like this one and my
23:23
send an event like this one and my application listen the same cu the same
23:27
application listen the same cu the same
23:27
application listen the same cu the same um the same C that this event will send
23:32
um the same C that this event will send
23:32
um the same C that this event will send it what I want to do after that well my
23:36
it what I want to do after that well my
23:36
it what I want to do after that well my application need to change something
23:39
application need to change something
23:39
application need to change something into the
23:41
into the
23:41
into the database and what I will do with with
23:44
database and what I will do with with
23:44
database and what I will do with with this
23:45
this
23:45
this scenario okay I will listen the
23:49
scenario okay I will listen the
23:49
scenario okay I will listen the database until that this modification
23:54
database until that this modification
23:54
database until that this modification happen create a
23:56
happen create a
23:56
happen create a reservation nothing
23:58
reservation nothing
23:59
reservation nothing s an event my application will do
24:01
s an event my application will do
24:01
s an event my application will do something but I can check if my
24:03
something but I can check if my
24:03
something but I can check if my application is working or not because
24:05
application is working or not because
24:05
application is working or not because it's ASN
24:07
it's ASN
24:07
it's ASN chronic so the only way that I can check
24:11
chronic so the only way that I can check
24:11
chronic so the only way that I can check if everything it's okay or not is check
24:14
if everything it's okay or not is check
24:14
if everything it's okay or not is check the database instead to check what
24:17
the database instead to check what
24:17
the database instead to check what happened in the my application I will
24:19
happened in the my application I will
24:19
happened in the my application I will check what happened into the
24:21
check what happened into the
24:21
check what happened into the database and remember that I show you
24:25
database and remember that I show you
24:25
database and remember that I show you the a simple
24:27
the a simple
24:27
the a simple HTTP uh um request to access to my
24:30
HTTP uh um request to access to my
24:30
HTTP uh um request to access to my mongodb database okay I will do the same
24:35
mongodb database okay I will do the same
24:35
mongodb database okay I will do the same and I will retry many times 10
24:40
and I will retry many times 10
24:40
and I will retry many times 10 times uh with an interval of three
24:44
times uh with an interval of three
24:44
times uh with an interval of three seconds each interval to check if
24:47
seconds each interval to check if
24:47
seconds each interval to check if something change into my
24:52
database and I read the final solution
24:56
database and I read the final solution
24:56
database and I read the final solution or the my status that the status of the
25:00
or the my status that the status of the
25:00
or the my status that the status of the database that I want to be there and at
25:05
database that I want to be there and at
25:05
database that I want to be there and at the last verification I will check if uh
25:11
the last verification I will check if uh
25:11
the last verification I will check if uh the message if my application produce
25:14
the message if my application produce
25:14
the message if my application produce some message and if my application
25:16
some message and if my application
25:16
some message and if my application produces some message which is this this
25:19
produces some message which is this this
25:19
produces some message which is this this is the case okay I will remove it
25:23
is the case okay I will remove it
25:23
is the case okay I will remove it remember that my test Co affect another
25:26
remember that my test Co affect another
25:26
remember that my test Co affect another ones that are part part of
25:30
ones that are part part of
25:30
ones that are part part of um of this
25:32
um of this
25:32
um of this set and how I can run this let me stop
25:38
set and how I can run this let me stop
25:38
set and how I can run this let me stop this all the things in my case it's like
25:41
this all the things in my case it's like
25:41
this all the things in my case it's like with NBN test because it's a you need to
25:45
with NBN test because it's a you need to
25:45
with NBN test because it's a you need to create to run karate or to use karate
25:48
create to run karate or to use karate
25:48
create to run karate or to use karate you need to use uh Java but is the only
25:52
you need to use uh Java but is the only
25:52
you need to use uh Java but is the only way to run karate not have support but
25:56
way to run karate not have support but
25:56
way to run karate not have support but in in with this scenario you can run
25:59
in in with this scenario you can run
25:59
in in with this scenario you can run test in in agnostic way it's for me the
26:03
test in in agnostic way it's for me the
26:03
test in in agnostic way it's for me the API I run this with this approach with
26:06
API I run this with this approach with
26:06
API I run this with this approach with apis that use python or go or any kind
26:10
apis that use python or go or any kind
26:10
apis that use python or go or any kind of language without any kind of problems
26:12
of language without any kind of problems
26:12
of language without any kind of problems so the idea is more or less that without
26:15
so the idea is more or less that without
26:15
so the idea is more or less that without need to know nothing about Java because
26:18
need to know nothing about Java because
26:18
need to know nothing about Java because all these things are not connected with
26:20
all these things are not connected with
26:20
all these things are not connected with Java is is a simple
26:24
Java is is a simple
26:24
Java is is a simple syntax uh you only need to know
26:26
syntax uh you only need to know
26:26
syntax uh you only need to know different tools and K give you the
26:30
different tools and K give you the
26:30
different tools and K give you the possibility to combine all of them in in
26:33
possibility to combine all of them in in
26:33
possibility to combine all of them in in a simple way my test works and
26:37
a simple way my test works and
26:37
a simple way my test works and everything it's
26:39
everything it's
26:40
everything it's okay so it's complex I don't I perhaps
26:43
okay so it's complex I don't I perhaps
26:43
okay so it's complex I don't I perhaps it's if the first time that you listen
26:46
it's if the first time that you listen
26:46
it's if the first time that you listen about karate rot local stock test
26:48
about karate rot local stock test
26:48
about karate rot local stock test container perhap is so complex but the
26:51
container perhap is so complex but the
26:52
container perhap is so complex but the idea is of this talk that you see that
26:54
idea is of this talk that you see that
26:54
idea is of this talk that you see that it's possible to combine all these kind
26:57
it's possible to combine all these kind
26:57
it's possible to combine all these kind of things in a simple test in a simple
27:01
of things in a simple test in a simple
27:01
of things in a simple test in a simple um set of of verification of your
27:04
um set of of verification of your
27:04
um set of of verification of your application and if you write one of
27:07
application and if you write one of
27:07
application and if you write one of these test which combine different
27:09
these test which combine different
27:09
these test which combine different things you can do the same uh many times
27:13
things you can do the same uh many times
27:13
things you can do the same uh many times you can provide this uh template more or
27:16
you can provide this uh template more or
27:16
you can provide this uh template more or less to any person and any person that
27:20
less to any person and any person that
27:20
less to any person and any person that more or less knows something about these
27:23
more or less knows something about these
27:23
more or less knows something about these kind of things Co create their own test
27:26
kind of things Co create their own test
27:26
kind of things Co create their own test I don't know a business analyst or a
27:29
I don't know a business analyst or a
27:29
I don't know a business analyst or a developer or a technical leader like
27:32
developer or a technical leader like
27:32
developer or a technical leader like me
27:34
me
27:34
me so let me finish my
27:39
presentation best practices about this
27:42
presentation best practices about this
27:43
presentation best practices about this first check
27:44
first check
27:44
first check everything because you have a
27:46
everything because you have a
27:46
everything because you have a asynchronic event so you need to check
27:49
asynchronic event so you need to check
27:49
asynchronic event so you need to check if the events and the database suffer
27:52
if the events and the database suffer
27:52
if the events and the database suffer some kind of modifications is not like
27:56
some kind of modifications is not like
27:56
some kind of modifications is not like okay I will only check if the event uh
28:01
okay I will only check if the event uh
28:01
okay I will only check if the event uh will produce for my application or not
28:04
will produce for my application or not
28:04
will produce for my application or not the idea is that you check if the
28:07
the idea is that you check if the
28:07
the idea is that you check if the modification appearing to the
28:09
modification appearing to the
28:09
modification appearing to the database because you don't have the
28:11
database because you don't have the
28:11
database because you don't have the possibility to say h uh if something bad
28:15
possibility to say h uh if something bad
28:15
possibility to say h uh if something bad happen on my application I will receive
28:18
happen on my application I will receive
28:18
happen on my application I will receive a a bad request no perhaps in Mons of
28:22
a a bad request no perhaps in Mons of
28:22
a a bad request no perhaps in Mons of the application that listen event this
28:24
the application that listen event this
28:24
the application that listen event this is not possible so check the database
28:28
is not possible so check the database
28:28
is not possible so check the database and remove all EV after that you
28:33
and remove all EV after that you
28:33
and remove all EV after that you create a new scenario and this is
28:36
create a new scenario and this is
28:36
create a new scenario and this is scenario produce event or application
28:39
scenario produce event or application
28:39
scenario produce event or application produce
28:40
produce
28:40
produce event try to uh remove it in the case
28:46
event try to uh remove it in the case
28:46
event try to uh remove it in the case that will affect other other test right
28:50
that will affect other other test right
28:50
that will affect other other test right simple like uh as I show you my karate
28:54
simple like uh as I show you my karate
28:54
simple like uh as I show you my karate test don't say nothing about Java or
28:57
test don't say nothing about Java or
28:57
test don't say nothing about Java or anything language is is agnostic anyone
29:01
anything language is is agnostic anyone
29:01
anything language is is agnostic anyone Co understand uh is is using simple
29:04
Co understand uh is is using simple
29:04
Co understand uh is is using simple words and try to externalize all the
29:08
words and try to externalize all the
29:08
words and try to externalize all the things all the the bodies of the request
29:10
things all the the bodies of the request
29:11
things all the the bodies of the request or the query message or the request or
29:14
or the query message or the request or
29:14
or the query message or the request or the body sorry of the the message that
29:16
the body sorry of the the message that
29:16
the body sorry of the the message that you want to send is a way that anyone
29:20
you want to send is a way that anyone
29:20
you want to send is a way that anyone could understand the idea of the test
29:23
could understand the idea of the test
29:23
could understand the idea of the test and use container try to create um a
29:27
and use container try to create um a
29:27
and use container try to create um a Docker compos file which simulate all
29:30
Docker compos file which simulate all
29:30
Docker compos file which simulate all the real infrastructure and connect with
29:33
the real infrastructure and connect with
29:33
the real infrastructure and connect with test
29:33
test
29:33
test container which have support on
29:36
container which have support on
29:36
container which have support on different languages so if you replace
29:40
different languages so if you replace
29:40
different languages so if you replace karate for another another framework you
29:43
karate for another another framework you
29:43
karate for another another framework you can you reuse any of these things in in
29:46
can you reuse any of these things in in
29:46
can you reuse any of these things in in any language in fact I use this approach
29:50
any language in fact I use this approach
29:50
any language in fact I use this approach to change from one framework to another
29:53
to change from one framework to another
29:53
to change from one framework to another or rewrite my one entire microservices
29:57
or rewrite my one entire microservices
29:57
or rewrite my one entire microservices without any kind of problem
29:59
without any kind of problem
29:59
without any kind of problem so H this is the the the main goal of
30:02
so H this is the the the main goal of
30:02
so H this is the the the main goal of the talk additional resources there are
30:05
the talk additional resources there are
30:05
the talk additional resources there are some books which provide you more
30:08
some books which provide you more
30:08
some books which provide you more information about different things like
30:10
information about different things like
30:10
information about different things like what is bdd because I I think if you
30:14
what is bdd because I I think if you
30:14
what is bdd because I I think if you don't work with the bdd perhaps you say
30:17
don't work with the bdd perhaps you say
30:17
don't work with the bdd perhaps you say what is this and there is another one
30:20
what is this and there is another one
30:20
what is this and there is another one which is testing web API which provide
30:23
which is testing web API which provide
30:23
which is testing web API which provide information not just how to create a
30:25
information not just how to create a
30:25
information not just how to create a test it's like thinking on different
30:27
test it's like thinking on different
30:27
test it's like thinking on different things
30:28
things
30:28
things about a test like okay what happened
30:30
about a test like okay what happened
30:30
about a test like okay what happened with the database what happened with
30:32
with the database what happened with
30:32
with the database what happened with events what happened with an endtoend
30:35
events what happened with an endtoend
30:35
events what happened with an endtoend test how I can
30:37
test how I can
30:37
test how I can check my entire infrastructure or how I
30:40
check my entire infrastructure or how I
30:40
check my entire infrastructure or how I can run the test in a pipeline without
30:42
can run the test in a pipeline without
30:42
can run the test in a pipeline without affecting all
30:44
affecting all
30:44
affecting all microservices and at the end I have I
30:47
microservices and at the end I have I
30:47
microservices and at the end I have I put some uh books about the the idea of
30:50
put some uh books about the the idea of
30:50
put some uh books about the the idea of event in the case that you don't have
30:53
event in the case that you don't have
30:53
event in the case that you don't have experience uh using event uh on your
30:56
experience uh using event uh on your
30:56
experience uh using event uh on your microservices
30:58
microservices
30:58
microservices some blocks
30:59
some blocks
31:00
some blocks to and go in deep in some terms that I
31:03
to and go in deep in some terms that I
31:03
to and go in deep in some terms that I mentioned during the during my
31:06
mentioned during the during my
31:06
mentioned during the during my talk and that is all thank you for uh
31:10
talk and that is all thank you for uh
31:10
talk and that is all thank you for uh coming to this talk
31:17
[Music]