# android.support.test.espresso # android.support.test.espresso | This package is part of the Android[support library](https://developer.android.com/topic/libraries/support-library)which is no longer maintained. The support library has been superseded by[AndroidX](https://developer.android.com/jetpack/androidx)which is part of[Jetpack](https://developer.android.com/jetpack). We recommend using the AndroidX libraries in all new projects. You should also consider[migrating](https://developer.android.com/jetpack/androidx/migrate)existing projects to AndroidX. To find the AndroidX class that maps to this deprecated class, see the AndroidX support library[class mappings](https://developer.android.com/jetpack/androidx/migrate/class-mappings). ## Interfaces |------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [EspressoException](https://developer.android.com/reference/android/support/test/espresso/EspressoException) | Used for identifying an exception as coming from the[Espresso](https://developer.android.com/reference/android/support/test/espresso/Espresso)framework. | | [FailureHandler](https://developer.android.com/reference/android/support/test/espresso/FailureHandler) | Handles failures that happen during test execution. | | [IdlingResource](https://developer.android.com/reference/android/support/test/espresso/IdlingResource) | Represents a resource of an application under test which can cause asynchronous background work to happen during test execution (e.g. | | [IdlingResource.ResourceCallback](https://developer.android.com/reference/android/support/test/espresso/IdlingResource.ResourceCallback) | Registered by an[IdlingResource](https://developer.android.com/reference/android/support/test/espresso/IdlingResource)to notify Espresso of a transition to idle. | | [UiController](https://developer.android.com/reference/android/support/test/espresso/UiController) | Provides base-level UI operations (such as injection of[MotionEvent](https://developer.android.com/reference/android/view/MotionEvent.html)s) that can be used to build user actions such as clicks, scrolls, swipes, etc. | | [ViewAction](https://developer.android.com/reference/android/support/test/espresso/ViewAction) | Responsible for performing an interaction on the given View element. | | [ViewAssertion](https://developer.android.com/reference/android/support/test/espresso/ViewAssertion) | Responsible for performing assertions on a View element. | | [ViewFinder](https://developer.android.com/reference/android/support/test/espresso/ViewFinder) | Uses matchers to locate particular views within the view hierarchy. | | [ViewInteractionComponent](https://developer.android.com/reference/android/support/test/espresso/ViewInteractionComponent) | Dagger component for view interaction classes. | ## Classes |------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [AmbiguousViewMatcherException.Builder](https://developer.android.com/reference/android/support/test/espresso/AmbiguousViewMatcherException.Builder) | Builder for[AmbiguousViewMatcherException](https://developer.android.com/reference/android/support/test/espresso/AmbiguousViewMatcherException). | | [DataInteraction](https://developer.android.com/reference/android/support/test/espresso/DataInteraction) | An interface to interact with data displayed in AdapterViews. | | [DataInteraction.DisplayDataMatcher](https://developer.android.com/reference/android/support/test/espresso/DataInteraction.DisplayDataMatcher) | Internal matcher that is required for[onData(Matcher)](https://developer.android.com/reference/android/support/test/espresso/Espresso#onData(org.hamcrest.Matcher)). | | [Espresso](https://developer.android.com/reference/android/support/test/espresso/Espresso) | Entry point to the Espresso framework. | | [IdlingPolicies](https://developer.android.com/reference/android/support/test/espresso/IdlingPolicies) | Allows users fine grain control over idling policies. | | [IdlingPolicy](https://developer.android.com/reference/android/support/test/espresso/IdlingPolicy) | Allows users to control idling idleTimeouts in Espresso. | | [IdlingRegistry](https://developer.android.com/reference/android/support/test/espresso/IdlingRegistry) | Handles registering and unregistering of[IdlingResource](https://developer.android.com/reference/android/support/test/espresso/IdlingResource)s with Espresso from within your application code. | | [NoMatchingViewException.Builder](https://developer.android.com/reference/android/support/test/espresso/NoMatchingViewException.Builder) | Builder for[NoMatchingViewException](https://developer.android.com/reference/android/support/test/espresso/NoMatchingViewException). | | [PerformException.Builder](https://developer.android.com/reference/android/support/test/espresso/PerformException.Builder) | Builder for[PerformException](https://developer.android.com/reference/android/support/test/espresso/PerformException). | | [Root](https://developer.android.com/reference/android/support/test/espresso/Root) | Represents a root view in the application and optionally the layout params of the window holding it. | | [Root.Builder](https://developer.android.com/reference/android/support/test/espresso/Root.Builder) | | | [ViewInteraction](https://developer.android.com/reference/android/support/test/espresso/ViewInteraction) | Provides the primary interface for test authors to perform actions or asserts on views. | ## Exceptions |----------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [AmbiguousViewMatcherException](https://developer.android.com/reference/android/support/test/espresso/AmbiguousViewMatcherException) | An exception which indicates that a Matchermatched multiple views in the hierarchy when only one view was expected. | | [AppNotIdleException](https://developer.android.com/reference/android/support/test/espresso/AppNotIdleException) | An exception which indicates that the App has not become idle even after the specified duration. | | [IdlingResourceTimeoutException](https://developer.android.com/reference/android/support/test/espresso/IdlingResourceTimeoutException) | Indicates that an[IdlingResource](https://developer.android.com/reference/android/support/test/espresso/IdlingResource), which has been registered with the framework, has not idled within the allowed time. | | [InjectEventSecurityException](https://developer.android.com/reference/android/support/test/espresso/InjectEventSecurityException) | An checked[Exception](https://developer.android.com/reference/java/lang/Exception.html)indicating that event injection failed with a[SecurityException](https://developer.android.com/reference/java/lang/SecurityException.html). | | [NoActivityResumedException](https://developer.android.com/reference/android/support/test/espresso/NoActivityResumedException) | An exception which indicates that there are no activities in stage RESUMED. | | [NoMatchingRootException](https://developer.android.com/reference/android/support/test/espresso/NoMatchingRootException) | Indicates that a given matcher did not match any[Root](https://developer.android.com/reference/android/support/test/espresso/Root)s (windows) from those that are currently available. | | [NoMatchingViewException](https://developer.android.com/reference/android/support/test/espresso/NoMatchingViewException) | Indicates that a given matcher did not match any elements in the view hierarchy. | | [PerformException](https://developer.android.com/reference/android/support/test/espresso/PerformException) | Indicates that an exception occurred while performing a ViewAction on the UI thread. | - ## Interfaces - [EspressoException](https://developer.android.com/reference/android/support/test/espresso/EspressoException) - [FailureHandler](https://developer.android.com/reference/android/support/test/espresso/FailureHandler) - [IdlingResource](https://developer.android.com/reference/android/support/test/espresso/IdlingResource) - [IdlingResource.ResourceCallback](https://developer.android.com/reference/android/support/test/espresso/IdlingResource.ResourceCallback) - [UiController](https://developer.android.com/reference/android/support/test/espresso/UiController) - [ViewAction](https://developer.android.com/reference/android/support/test/espresso/ViewAction) - [ViewAssertion](https://developer.android.com/reference/android/support/test/espresso/ViewAssertion) - [ViewFinder](https://developer.android.com/reference/android/support/test/espresso/ViewFinder) - [ViewInteractionComponent](https://developer.android.com/reference/android/support/test/espresso/ViewInteractionComponent) - ## Classes - [AmbiguousViewMatcherException.Builder](https://developer.android.com/reference/android/support/test/espresso/AmbiguousViewMatcherException.Builder) - [DataInteraction](https://developer.android.com/reference/android/support/test/espresso/DataInteraction) - [DataInteraction.DisplayDataMatcher](https://developer.android.com/reference/android/support/test/espresso/DataInteraction.DisplayDataMatcher) - [Espresso](https://developer.android.com/reference/android/support/test/espresso/Espresso) - [IdlingPolicies](https://developer.android.com/reference/android/support/test/espresso/IdlingPolicies) - [IdlingPolicy](https://developer.android.com/reference/android/support/test/espresso/IdlingPolicy) - [IdlingRegistry](https://developer.android.com/reference/android/support/test/espresso/IdlingRegistry) - [NoMatchingViewException.Builder](https://developer.android.com/reference/android/support/test/espresso/NoMatchingViewException.Builder) - [PerformException.Builder](https://developer.android.com/reference/android/support/test/espresso/PerformException.Builder) - [Root](https://developer.android.com/reference/android/support/test/espresso/Root) - [Root.Builder](https://developer.android.com/reference/android/support/test/espresso/Root.Builder) - [ViewInteraction](https://developer.android.com/reference/android/support/test/espresso/ViewInteraction) - ## Exceptions - [AmbiguousViewMatcherException](https://developer.android.com/reference/android/support/test/espresso/AmbiguousViewMatcherException) - [AppNotIdleException](https://developer.android.com/reference/android/support/test/espresso/AppNotIdleException) - [IdlingResourceTimeoutException](https://developer.android.com/reference/android/support/test/espresso/IdlingResourceTimeoutException) - [InjectEventSecurityException](https://developer.android.com/reference/android/support/test/espresso/InjectEventSecurityException) - [NoActivityResumedException](https://developer.android.com/reference/android/support/test/espresso/NoActivityResumedException) - [NoMatchingRootException](https://developer.android.com/reference/android/support/test/espresso/NoMatchingRootException) - [NoMatchingViewException](https://developer.android.com/reference/android/support/test/espresso/NoMatchingViewException) - [PerformException](https://developer.android.com/reference/android/support/test/espresso/PerformException)