- [Narrator] Now we will test the togFavorites function…without loading a recipe first.…If you go to the Presenter, scroll down,…and look at the togFavorite function.…Remember when we were writing it, I was like,…"Oh! If the recipe is null, it's going to be bad."…So let's try that.…Let's actually try the case when we have a presenter…but we have no code, no recipe yet.…So recipe is null,…and then in toggleFavorite we will try to read this ID.…
Go back to the test.…Once again, when you're on the class itself,…when you press Command+Shift+T,…you can switch to the associated test.…We'll add a new test method,…@Test to indicate that it is a test method,…and then public void,…we will call it togglewithoutLoad.…Since we have initialized the presenter in the setup method,…all we need to do here is to code toggle.…
So presenter.toggleFavorite.…How are we going to verify that it actually throws…an exception?…Well one thing you can do is to just run the test.…So let's do that.…Click on the green triangle and press run.…So here in the test it threw an illegal state exception,…
Author
Released
8/30/2017- Why test?
- Local vs. on-device
- Code coverage
- UI testing
- RecyclerView
- Hermetic environment
- Dependency injection
- Testing with MVP
Skill Level Intermediate
Duration
Views
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Android App Development: Data Persistence Libraries
with Annyce Davis4h 52m Intermediate
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Introduction
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Welcome1m
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1. Testing Considerations
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Why test?1m 10s
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Types of tests1m 10s
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Local vs. on-device4m 54s
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2. Test as You Go
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The sample app1m 32s
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Smallest unit first2m 20s
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Code coverage5m 20s
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3. UI Testing
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RecyclerView7m
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RecipeActivity: Layout2m 38s
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Vector drawable: Create3m 7s
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Vector drawable: Use2m 8s
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SharedPreferencesFavorites5m 22s
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Favorite: OnClickListener1m 40s
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4. Hermetic Environment
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Test doubles2m 10s
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Dependency injection1m 3s
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InMemoryFavorites4m 30s
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RecipeApplication3m 18s
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TestRecipeApplication1m 51s
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CustomTestRunner2m 26s
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Test state: Setup2m 17s
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Test state: Test3m 47s
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5. Robot Pattern
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What vs. How56s
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ScreenRobot3m 4s
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RecipeRobot6m 12s
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Clear favorites6m 55s
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Separation of concerns1m 40s
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6. Model-View-Presenter
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Introduction1m 19s
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Refactor: Load recipe2m 58s
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Refactor: Show error6m 1s
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Refactor: Show recipe7m 6s
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Refactor: Toggle favorite3m 31s
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Mockito: Intro1m 18s
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Mockito: Setup4m 29s
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Testing with MVP: Exception2m 26s
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Summary1m 14s
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Conclusion
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Next steps23s
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Video: Testing with MVP: Exception