How to test Dependency Injection in Android?

Dependency Injection (DI) is a design pattern used in Android development to promote loose coupling between components. To test DI in Android, you typically use frameworks like Dagger or Hilt. Testing ensures that your components receive the correct dependencies, facilitating unit and UI tests. Below is an example of how to test Dependency Injection using Hilt in an Android application.

To run DI tests in Android, you can set up a test class that extends the HiltAndroidRule to manage the injection of dependencies. Always check that the injected components behave as expected.

@HiltAndroidTest class SomeActivityTest { @get:Rule var hiltRule = HiltAndroidRule(this) @Inject lateinit var myDependency: MyDependency @Before fun init() { hiltRule.inject() } @Test fun testMyDependency() { assertNotNull(myDependency) // Additional test assertions on myDependency } }

Dependency Injection Android Testing Hilt Dagger Unit Testing UI Testing

Related Questions

How do I avoid rehashing overhead with std::set in multithreaded code?

How do I find elements with custom comparators with std::set for embedded targets?

How do I erase elements while iterating with std::set for embedded targets?

How do I provide stable iteration order with std::unordered_map for large datasets?

How do I reserve capacity ahead of time with std::unordered_map for large datasets?

How do I erase elements while iterating with std::unordered_map in multithreaded code?

How do I provide stable iteration order with std::map for embedded targets?

How do I provide stable iteration order with std::map in multithreaded code?

How do I avoid rehashing overhead with std::map in performance-sensitive code?

How do I merge two containers efficiently with std::map for embedded targets?