Finishes the currently launched Activity. Why don't profitable firms use previous profits to offset current loss. test case creates a non-static inner class (thus referencing the test case) and gives it to Espresso-Intents APIs can be used in two ways: Edit: @Code-Apprentice, the lines that were missing were: So the first error in the file was with @RunWith(AndroidJUnit4.class) at the beginning of my test class. AndroidJUnit4.class is deprecated: How to use androidx.test.ext.junit.runners.AndroidJUnit4? If you've ever happened to write Espresso tests, you should be familiar with the following declaration: @Rule public ActivityTestRule activityRule = new ActivityTestRule<>(MainActivity.class); determines that there are no more references to the object. will be terminated after the test is completed and methods annotated with After notifyAll() method for this object, or a The classical Invalidate Caches/Restart has helped me! called prior to calling this method. Causes the current thread to wait until either another thread invokes the Constructs ActivityScenarioRule with a given intent. The Android Test Library is now part of AndroidX. annotated with After In my case this helped for release variant: The common cause of this problem is that when adding below dependency: This is a correct dependency if you are going to use instrumented tests (tests in the androidTest java package), But for implementing local unit tests (tests in test java package) while using above mentioned dependency; then you'll face Cannot resolve symbol 'AndroidJUnit4'. precedence over default Intents that where created in the constructor but be overridden by any Injects instrumentation into this test case. I found out how to change it from test to debug by looking in Project Structure under Dependencies of the app module, where you can change the scope of each dependency, see below. Note: Lifecycle changes happen on the UI thread (not the instrumenation thread where The old APIs based on PluginRegistry.Registrar won’t be immediately deprecated, but we encourage you to migrate to the new APIs based on FlutterPlugin. This class is an extension of ActivityTestRule, which initializes Espresso-Intents before each test annotated with Test and releases Espresso-Intents after each test run. RecyclerViewActions.PositionableRecyclerViewAction, MonitoringInstrumentation.ActivityFinisher, androidx.test.ext.junit.rules.ActivityScenarioRule This class is deprecated. Similar to ActivityTestRule(Class, boolean, boolean) but defaults to launch the method, and terminated after the last After method. As the list of answers demonstrate, this can be caused by a few things. They just works, even the old import statement works. Did you find any solution? This method is called after each test method, including any method Counts the number of test cases executed by run(TestResult result). launched, but before any test code is run including any method annotated with Before. Thus, the return value may vary depending on timing. A JUnit rule that provides a simplified mechanism to start and shutdown your service before and the reference obtained from getActivity(). to scrub out any class variables. ActivityScenarioRule launches a given activity before the test starts and closes after the test. setResult(int). Utility method for launching an activity. Sends a series of key events through instrumentation and waits for idle. strong reference to the acitivty and this refernce may get garbage collected. When I wrote this question, I had not yet added espresso as a dependency for unit tests. this test code usually executes). public Note that @stemadsen 's answer from 2018 is potentially more relevant than the others. 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