Run all unit tests in Android Studio

Not sure what version of Android Studio this was added in, but I'm using Android Studio 3.4.

In the Project Explorer Window, select the Project View.

Right click on your root project and select "Create 'All Tests'..."

...this window will appear (these defaults need to be changed)

Change the following options:

• Search for tests:

  • In whole project

• JRE:

  • Most recent version of Android API __ Platform that you have available in this menu (for me, Android API 28 Platform

• Click Apply

• Select "All Tests" from the drop down menu

• View output from all your tests

First, you can list all the test tasks available in your project with

./gradlew tasks

Then you can choose the tasks you want to execute. If you want to execute all tests for all flavors ans all buildTypes, you just have to run

./gradlew test connectedAndroidTest

If you don't want to remember all the gradle test command each time you want to run the tests, you can create a file "custom_tasks.gradle" and add

task testAll(dependsOn: ['test', 'connectedAndroidTest']) {
   group = 'custom_tasks'
   description = "Run all tests"
}

Then, you just have to run

./gradlew testAll