How do I test ViewModels in Android?

How do I test ViewModels in Android?

To test ViewModels in Android, you can use the AndroidX Test library along with JUnit. Start by creating a test class for your ViewModel.

What dependencies do I need for testing?

You'll need dependencies like 'androidx.test.ext:junit' and 'androidx.lifecycle:lifecycle-testing' in your build.gradle file.

Can you show me a simple test example?

Sure! Here's a basic example:

@Test
public void testViewModel() {
    MyViewModel viewModel = new MyViewModel();
    viewModel.setData("Test");
    assertEquals("Test", viewModel.getData());
}

How do I mock dependencies in my ViewModel tests?

You can use libraries like Mockito to mock dependencies. Just annotate your test class with @RunWith(MockitoJUnitRunner.class) and use Mockito's methods to create mocks.