MvRx Testing

The mvrx-testing artifact can be added as a test dependency to provide additional tooling when writing tests for MvRx ViewModels and screens.

MvRx Test Rule

The MvRxTestRule class can be used as a JUnit rule to assist with configuring ViewModels for each test class.

class MyTestClass {

    @get:Rule
    val mvrxRule = MvRxTestRule()

    @Test fun ...
}

This rule allows you to configure behavior such as:

• Forcing RxJava schedulers to be immediate, so state changes happen synchronously
• Forcing ViewModel subscriptions to happen even when a Fragment is not STARTED
• Changing the debugMode setting of each ViewModel
• Changing the mock behavior of ViewModels so that state changes can be prevented or overridden

See the kdoc of MvRxTestRule for further details.