Join Chiu-Ki Chan for an in-depth discussion in this video Dagger TestComponent, part of Advanced Android Espresso Testing.
- [Instructor] Let's create a test component for testing.…Click on the package name under androidTest,…right click, New, Kotlin File/Class.…Call it TestComponent.…We will define an interface here.…The interface test component will…extend ApplicationComponent.…This is because we want the test component to be able…to inject fills into main activity.…
We need to annotate it with component…so that dagger knows that this is a dagger component.…Inside, we are going to define a builder.…Interface builder.…And then we will need to annotate this builder…with the dagger annotation at component dot builder.…On line seven type @Component.Builder.…
To make a builder, we will need a build function.…On line nine, type fun build which returns a test component.…We are asking dagger to generate a builder for us.…In the builder, we would like to be able to provide a clock.…To do that, we will use the binds instance annotation.…@BindsInstance and then fun clock with the parameter clock,…I've typed clock which returns a builder.…
We are asking it to return builder…
- Incoming and outgoing intents
- How intents are used
- Dependency injection
- Why extract dependencies?
- Mockito and Dagger
Skill Level Advanced
Effective Android Testing for Mobile Developerswith Chiu-Ki Chan2h 56m Intermediate
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2. Hermetic Test Environment
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