How to test Safe Args in Android?

Safe Args is a part of the Android Navigation component that allows you to pass data between destinations with type safety. To test Safe Args in your Android application, you can follow these steps:

  1. Create a navigation graph and add actions between destinations using Safe Args.
  2. Generate the Safe Args classes by syncing your project, which creates a set of classes for each action and arguments.
  3. Write unit tests to check if the correct parameters are passed between destinations.
  4. Use instrumentation tests to verify the navigation flow in the UI.

Here is an example of how you can test Safe Args:

// Create a test for passing args @RunWith(AndroidJUnit4.class) public class ExampleInstrumentedTest { @Test public void testSafeArgs() { NavController navController = Mockito.mock(NavController.class); Navigation.setViewNavController(myFragment.getView(), navController); // Use Safe Args to create the action with parameters MyFragmentDirections.ActionToAnotherFragment action = MyFragmentDirections.actionToAnotherFragment("argument"); navController.navigate(action); // Verify that the correct action was called Mockito.verify(navController).navigate(action); } }

Safe Args Android Navigation unit testing instrumentation testing Android development

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