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Combine framework tutorial - Part 4 - How to include unit testing and dependency injection
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Let's see how we can write unit test for code that uses the Combine framework. We need to first use dependency injection to replace URLSession data task publisher with a Result publisher in the mock service.
I will write a few tests to show you different test cases and use Combine operators like collect, first, output(at). You can find the full list of Combine operators at the official Apple documentation here:
You need to scroll down a lot. Some of the operators have examples. They don't show a good use case but are a good example for implementation details.
overview:
00:00 intro
01:17 dependency injection
07:19 writing tests with Combine publishers
20:41 testing error cases
22:22 dependency injection with the Result publisher
29:05 testing if data stream completes
34:24 wrap up
The other parts of this series are:
If you liked what you learned and you want to see more, check out one of my courses!
#CombineFramework #UnitTesting
I will write a few tests to show you different test cases and use Combine operators like collect, first, output(at). You can find the full list of Combine operators at the official Apple documentation here:
You need to scroll down a lot. Some of the operators have examples. They don't show a good use case but are a good example for implementation details.
overview:
00:00 intro
01:17 dependency injection
07:19 writing tests with Combine publishers
20:41 testing error cases
22:22 dependency injection with the Result publisher
29:05 testing if data stream completes
34:24 wrap up
The other parts of this series are:
If you liked what you learned and you want to see more, check out one of my courses!
#CombineFramework #UnitTesting
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