android - How to pass an argument to an AndroidTestCase?

Question

I've implemented an Instrumentation and an AndroidTestCase.

For my tests I need to connect to an external WIFI device. I want the testers to be able to specify an SSID for the test to use.

Giving the the command line (adb shell am instrument ...) to run the test is not a problem, but how can I add the SSID to the command line and extract it in the code?

Answer 1

To expand on selalerer's answer, instrumentation test(s) can be started with arguments specified via Gradle:

./gradlew -Pandroid.testInstrumentationRunnerArguments.exampleArgument=hello connectedAndroidTest

You can retrieve instrumentation arguments using:

InstrumentationRegistry.getArguments().getString("exampleArgument") // returns "hello"