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Automate user interface tests

Element Android ensures that some fundamental flows are properly working by running automated user interface tests. Ui tests are using the android Espresso library.

Tests can be run on a real device, or on a virtual device (such as the emulator in Android Studio).

Currently the test are covering a small set of application flows: - Registration - Self verification via emoji - Self verification via passphrase

Prerequisites:

Out of the box, the tests use one of the homeservers (located at http://localhost:8080) of the "Demo Federation of Homeservers" (https://github.com/matrix-org/synapse#running-a-demo-federation-of-synapses).

You first need to follow instructions to set up Synapse in development mode at https://github.com/matrix-org/synapse#synapse-development. If you have already installed all dependencies, the steps are:

$ git clone https://github.com/matrix-org/synapse.git
$ cd synapse
$ virtualenv -p python3 env
$ source env/bin/activate
(env) $ python -m pip install --no-use-pep517 -e .

Every time you want to launch these test homeservers, type:

$ source env/bin/activate
(env) $ demo/start.sh --no-rate-limit

Emulator/Device set up

When running the test via android studio on a device, you have to disable system animations in order for the test to work properly.

First, ensure developer mode is enabled:

To enable developer options, tap the Build Number option 7 times. You can find this option in one of the following locations, depending on your Android version:
- Android 9 (API level 28) and higher: Settings > About Phone > Build Number
- Android 8.0.0 (API level 26) and Android 8.1.0 (API level 26): Settings > System > About Phone > Build Number
- Android 7.1 (API level 25) and lower: Settings > About Phone > Build Number

On your device, under Settings > Developer options, disable the following 3 settings:

Window animation scale
Transition animation scale
Animator duration scale

Run the tests

Once Synapse is running, and an emulator is running, you can run the UI tests.

From the source code

Click on the green arrow in front of each test. Clicking on the arrow in front of the test class, or from the package directory does not always work (Tests not found issue).

From command line

./gradlew vector:connectedGplayDebugAndroidTest

To run all the tests from the vector module.

In case of trouble, you can try to uninstall the previous installed test APK first with this command:

adb uninstall im.vector.app.debug.test

Recipes

We added some specific Espresso IdlingResources, and other utilities for matrix related tests

Wait for initial sync

// Wait for initial sync and check room list is there
withIdlingResource(initialSyncIdlingResource(uiSession)) {
  onView(withId(R.id.roomListContainer))
            .check(matches(isDisplayed()))
}

Accessing current activity

    val activity = EspressoHelper.getCurrentActivity()!!
    val uiSession = (activity as HomeActivity).activeSessionHolder.getActiveSession()

Interact with other session

It's possible to create a session via the SDK, and then use this session to interact with the one that the emulator is using (to check verifications for example)

@Before
fun initAccount() {
  val context = InstrumentationRegistry.getInstrumentation().targetContext
  val matrix = Matrix.getInstance(context)
  val userName = "foobar_${System.currentTimeMillis()}"
  existingSession = createAccountAndSync(matrix, userName, password, true)
}

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