Android Studio 2.3在UI中没有Test Instrumentation说明符

Question

After updating to Android Studio 2.3 when I try to run some espresso tests I get the following error:

Test running failed: Unable to find instrumentation info for: ComponentInfo{com.example.android/android.test.InstrumentationTestRunner} Empty test suite.

This was easily fixable in the past where in the Run Configuration I could specify my own InstrumentationRunner . Now I can't seem to find this option so I can't really specify my runner class now.

Note that my build gradle does contain

defaultConfig {
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    resConfigs "en", "es"
}

Answer 1

I ran into this problem this morning. I deleted the old run configuration (the one that was created before you specified the new runner via build.gradle ). I re-ran the tests and the new runner was picked up by Android Studio.

Answer 2

On Android Studio 2.3 this feature is not available as this was an optional to specify the Instrumentation Runner package/class in previous versions of Studio. But Android 2.3 is smart enough to pick this from your build.gradle file provided you have defined Instrumentation package runner there.

Answer 3

The following setup fixed the issue

productFlavors {
        doTheTests {
            minSdkVersion 18
            testInstrumentationRunner "com.company.app.test.TestRunner"
            if (System.getenv('CONTINUOUS_INTEGRATION').equals("true")) {
                testInstrumentationRunnerArguments(package: "com.company.app.test")
            }
        }
    } 

Because Android Studio doesn't allow the testInstrumentationRunnerArguments but executing the tests through terminal indeed requires it!

Obviously on the terminal / CI system, set an environment variable like: export CONTINUOUS_INTEGRATION=true

Answer 4

什么对我有帮助 - 从命令行开始测试然后同步项目。