Android Instrumentation 测试永远停留在“运行测试”上 Android Studio

Question

我将 Android Espresso 测试与最新的 Android Studio 2.1.2 一起使用，并且测试运行正常，但独立测试应用程序似乎没有返回结果以反映回 Android Studio，并且它显示永远运行测试

Answer 1

I realize this is an old question, but I just ran into this and didn't see any other search results that had the same problem.

In my case, this was caused by the code under test having a stack overflow exception, which it seems that the test runner failed to handle. I was only able to figure it out by looking at the "Android Monitor" and looking in the logcat.

So if you get to the point where AS just sits at "running test" forever, you might want to look in logcat for an exception that the test runner couldn't handle.

Answer 2

You have to try removing testCoverageEnabled option from build.gradle file if it's there. possible duplicate Gradle build tool long for android Tests

Answer 3

In case this helps anyone. In my case, I was setting the idle state wrongly(false instead of true) after doing a background task, so espresso was stuck thinking that was idle.

Answer 4

You can add an exit test class like this and include this in your Test Suite or Executor in the last

import android.os.Looper;

import androidx.test.rule.ActivityTestRule;
import androidx.test.runner.AndroidJUnit4;

import org.junit.FixMethodOrder;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.MethodSorters;

import java.io.IOException;

import static androidx.test.InstrumentationRegistry.getInstrumentation;

@RunWith(AndroidJUnit4.class)
@FixMethodOrder(MethodSorters.NAME_ASCENDING)
public class ExitTests {

    @Rule
    public ActivityTestRule<MainActivity> myActivityTestRule =
            new ActivityTestRule<>(MainActivity.class, false, true);

    public void init(){
        getInstrumentation().waitForIdleSync();
        if(Looper.myLooper() == null)
            Looper.prepare();
    }


    @Test
    public void Exit() throws InterruptedException, IOException {
        Runtime.getRuntime().exec(new String[] {"am", "force-stop", "com.package.name"});
    }
}

Here is the Test Suite

import org.junit.runner.RunWith;
import org.junit.runners.Suite;

@RunWith(Suite.class)
@Suite.SuiteClasses({ABC.class, ExitTests.class})
public class TestExecutionOrder {

}