AndroidTest.java.tmpl

package {package_name};

import android.app.Instrumentation;
import android.app.NativeActivity;
import android.content.ContentResolver;
import android.os.Looper;
import android.system.Os;
import android.util.Log;
import androidx.test.InstrumentationRegistry;
import androidx.test.filters.LargeTest;
import androidx.test.rule.ActivityTestRule;
import androidx.test.runner.AndroidJUnit4;
import com.google.android.apps.common.testing.util.AndroidTestUtil;
import com.google.common.jni.JniLoader;
import java.io.File;
import java.util.Map;
import org.junit.After;
import org.junit.Before;
import org.junit.Assert;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;

@RunWith(AndroidJUnit4.class)
@LargeTest
public class {java_class_name} {{
  static {{
    // Blaze packs shared libraries into jar files. JniLoader unpacks them and
    // then delegates to System.loadLibrary.
    JniLoader.loadLibrary("{so_lib_name}");
  }}

  private native boolean runAllTest(NativeActivity activity, String filter);

  @Rule
  public final ActivityTestRule<NativeActivity> rule =
      new ActivityTestRule<NativeActivity>(NativeActivity.class);
   
  @Before
  public void setupFirestoreEmulatorAddress() {{
    // TODO(b/171886053) Refactor to not rely on this call
    Looper.prepare();
    ContentResolver contentResolver =
        InstrumentationRegistry.getInstrumentation().getTargetContext().getContentResolver();
    Map<String, String> args = AndroidTestUtil.getTestArgs(contentResolver);
    if (args.containsKey("firestore_emulator_port")) {{
      String address = "10.0.2.2:" + args.get("firestore_emulator_port");
      try {{
        Os.setenv("FIRESTORE_EMULATOR_HOST", address, true);
        Log.i("{java_class_name}", "FIRESTORE_EMULATOR_HOST: " + address);
      }}
      catch (Exception e) {{
        Log.w("{java_class_name}", "Could not set emulator address environment variable: " + e);
        // Swallow exception to allow tests to run against actual backend.
      }}
    }}
  }}

  // Manually stop the test activity. If we let the test harness do this for us,
  // somehow that will catch an expected crash and fail the test. TODO(zxu):
  // Investigate the root cause and undo this change, see b/111298684.
  @After
  public void stopNativeActivity() {{
    Instrumentation instrumentation = null;
    try {{
      instrumentation = InstrumentationRegistry.getInstrumentation();
    }} catch (IllegalStateException e) {{
      Log.e("{java_class_name}",
            "cannot find instrumentation for the test activity");
      return;
    }}
    Log.d("{java_class_name}", "try to stop test activity");
    instrumentation.callActivityOnStop(rule.getActivity());
  }}

  private void run(String test) {{
    // Pass the test name as a filter to run the specific test.
    boolean result = runAllTest(rule.getActivity(), /*filter=*/test);
    Assert.assertTrue(result);
  }}

  {tests}
}}