commit | ffa1eedbb7bb34bb06a0158d5bf01a813070a9fb | [log] [tgz] |
---|---|---|
author | Michael Hoisie <hoisie@google.com> | Tue Oct 11 21:06:19 2022 -0700 |
committer | Copybara-Service <copybara-worker@google.com> | Tue Oct 11 21:06:55 2022 -0700 |
tree | 0110687361c9117f928ce00a5696b698c213f072 | |
parent | 7f3baf3d3ee329a0df6d9eccb603cf33ca6792a1 [diff] |
Fix loading Robolectric Native Runtime with concurrerent threads Previously, the logic to load the Robolectric Native Runtime used a simple AtomicBoolean to keep track of whether process to load the shared object file had been started. This meant that if this logic was initiated by two threads, the loser of the race would likely attempt to call native methods that hadn't been bound yet. Update the lazy-loading logic to be triggered when 'entry point' shadow methods are called. These are typically constructors and finalizer-related methods, though they may vary for each different native-backed object. Also update the RNR loading logic to be synchronized. It is safe to do this now as the lazy loading logic is triggered from shadows, so a static initializer deadlock won't result. PiperOrigin-RevId: 480523320
Robolectric is the industry-standard unit testing framework for Android. With Robolectric, your tests run in a simulated Android environment inside a JVM, without the overhead and flakiness of an emulator. Robolectric tests routinely run 10x faster than those on cold-started emulators.
Robolectric supports running unit tests for 16 different versions of Android, ranging from Jelly Bean (API level 16) to SV2 (API level 32).
Here's an example of a simple test written using Robolectric:
@RunWith(AndroidJUnit4.class) public class MyActivityTest { @Test public void clickingButton_shouldChangeResultsViewText() { Activity activity = Robolectric.setupActivity(MyActivity.class); Button button = (Button) activity.findViewById(R.id.press_me_button); TextView results = (TextView) activity.findViewById(R.id.results_text_view); button.performClick(); assertThat(results.getText().toString(), equalTo("Testing Android Rocks!")); } }
For more information about how to install and use Robolectric on your project, extend its functionality, and join the community of contributors, please visit http://robolectric.org.
If you'd like to start a new project with Robolectric tests you can refer to deckard
(for either maven or gradle) as a guide to setting up both Android and Robolectric on your machine.
testImplementation "junit:junit:4.13.2" testImplementation "org.robolectric:robolectric:4.8.2"
Robolectric is built using Gradle. Both IntelliJ and Android Studio can import the top-level build.gradle
file and will automatically generate their project files from it.
Those software configurations are recommended and tested.
JAVA_HOME
is correctly point to JDK11, or set the build environment by Gradle CLI option -Dorg.gradle.java.home="YourJdkHomePath"
or by Gradle Properties org.gradle.java.home=YourJdkHomePath
.ninja --version
.cmake --version
.gcc --version
.See Building Robolectric for more details about setting up a build environment for Robolectric.
Robolectric supports running tests against multiple Android API levels. The work it must do to support each API level is slightly different, so its shadows are built separately for each. To build shadows for every API version, run:
./gradlew clean assemble testClasses --parallel
Run tests for all API levels:
The fully tests could consume more than 16G memory(total of physical and virtual memory).
./gradlew test --parallel
Run tests for part of supported API levels, e.g. run tests for API level 26, 27, 28:
./gradlew test --parallel -Drobolectric.enabledSdks=26,27,28
Run compatibility test suites on opening Emulator:
./gradlew connectedCheck
If you would like to live on the bleeding edge, you can try running against a snapshot build. Keep in mind that snapshots represent the most recent changes on master and may contain bugs.
repositories { maven { url "https://oss.sonatype.org/content/repositories/snapshots" } } dependencies { testImplementation "org.robolectric:robolectric:4.9-SNAPSHOT" }