# androidx.window.testing

# androidx.window.testing

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Kotlin\|[Java](https://developer.android.com/reference/androidx/window/testing/package-summary "View this page in Java")

## Classes

|---------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [WindowSdkExtensionsRule](https://developer.android.com/reference/kotlin/androidx/window/testing/WindowSdkExtensionsRule) | [TestRule](https://junit.org/junit4/javadoc/4.12/org/junit/rules/TestRule.html)for overriding[WindowSdkExtensions](https://developer.android.com/reference/kotlin/androidx/window/WindowSdkExtensions)properties in unit tests. |