测试onActivityResult（） [英] Testing onActivityResult()

问题描述

我有以下活动：

package codeguru.startactivityforresult;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class StartActivityForResult extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        this.startButton = (Button) this.findViewById(R.id.start_button);
        this.startButton.setOnClickListener(onStart);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        int result = data.getIntExtra(StartActivityForResult.this.getString(R.string.result), -1);
        String msg = "requestCode=" + requestCode + ", resultCode=" + resultCode + ", result=" + result;
        Toast.makeText(this, msg, Toast.LENGTH_LONG).show();
    }

    private View.OnClickListener onStart = new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent intent = new Intent(StartActivityForResult.this, ChildActivity.class);

            StartActivityForResult.this.startActivityForResult(intent, R.id.child_request);
        }
    };
    private Button startButton = null;
}

和下面的JUnit测试：

And the following JUnit test:

package codeguru.startactivityforresult;

import android.app.Activity;
import android.app.Instrumentation;
import android.test.ActivityInstrumentationTestCase2;
import android.test.UiThreadTest;
import android.widget.Button;
import junit.framework.Assert;

public class StartActivityForResultTest extends ActivityInstrumentationTestCase2<StartActivityForResult> {

    public StartActivityForResultTest() {
        super(StartActivityForResult.class);
    }

    @Override
    public void setUp() throws Exception {
        super.setUp();

        this.setActivityInitialTouchMode(false);

        this.activity = this.getActivity();
        this.startButton = (Button) this.activity.findViewById(R.id.start_button);
    }

    @Override
    public void tearDown() throws Exception {
        this.activity.finish();

        super.tearDown();
    }

    @UiThreadTest
    public void testStartButtonOnClick() {
        Assert.assertTrue(this.startButton.performClick());

        Instrumentation.ActivityResult result = new Instrumentation.ActivityResult(Activity.RESULT_OK, null);
        Assert.assertNotNull(result);

        Instrumentation.ActivityMonitor am = new Instrumentation.ActivityMonitor(ChildActivity.class.getName(), result, true);
        Assert.assertNotNull(am);

        Activity childActivity = this.getInstrumentation().waitForMonitorWithTimeout(am, TIME_OUT);
        Assert.assertNotNull(childActivity);

        Assert.fail("How do I check that StartActivityForResult correctly handles the returned result?");
    }
    private Activity activity = null;
    private Button startButton = null;
    private static final int TIME_OUT = 5 * 1000; // 5 seconds
}

正如你所看到的，我想通了，如何使用小样结果 Instrumentation.ActivityResult 和 Instrumentation.ActivityMonitor 。我该如何检查 StartActivityForResult.onActivityResult（）正确处理这样的结果？

As you can see, I figured out how to mock up a result using Instrumentation.ActivityResult and Instrumentation.ActivityMonitor. How do I check that StartActivityForResult.onActivityResult() properly handles this result?

推荐答案

有关测试onActivityResult（）在你的测试类，所有你需要做的是：

For testing onActivityResult() in your test class, all you need to do is:

1. 创建它捕捉ChildActivity的创建和重新调整模拟ActivityResult的活动监视器。
2. 模拟按钮，点击它启动ChildActivity的结果。
3. 请在状态和模拟ActivityResult一些说法。

样品StartActivityForResult：

Sample StartActivityForResult:

public class StartActivityForResult extends Activity {
  private boolean activityResultIsReturned = false;
  private String activityResult = null;

  ... ...

  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    activityResultIsReturned = true;
    activityResult = data.getStringExtra("result");

    ... ...
  }

  ... ...
}

样品StartActivityForResultTest：

Sample StartActivityForResultTest:

public class StartActivityForResultTest extends ActivityInstrumentationTestCase2<StartActivityForResult> {
  ... ...

  public void testOnActivityResult() {
    // Get current Activity and check initial status:
    StartActivityForResult myActivity = getActivity();
    assertFalse(myActivity.getActivityResultIsReturned());
    assertNull(myActivity.getActiityResult());

    // Mock up an ActivityResult:
    Intent returnIntent = new Intent();
    returnIntent.putExtra("result", "This is the result");
    Instrumentation.ActivityResult activityResult = new Instrumentation.ActivityResult(Activity.RESULT_OK, returnIntent);

    // Create an ActivityMonitor that catch ChildActivity and return mock ActivityResult:
    Instrumentation.ActivityMonitor activityMonitor = getInstrumentation().addMonitor(ChildActivity.class.getName(), activityResult , true);

    // Simulate a button click that start ChildActivity for result:
    final Button button = (Button) myActivity.findViewById(com.company.R.id.open_next_activity);
    myActivity.runOnUiThread(new Runnable() {
      @Override
      public void run() {
        // click button and open next activity.
        button.performClick();
      }
    });

    // Wait for the ActivityMonitor to be hit, Instrumentation will then return the mock ActivityResult:
    ChildActivity childActivity = getInstrumentation().waitForMonitorWithTimeout(activityMonitor, 5);

    // How do I check that StartActivityForResult correctly handles the returned result?
    assertTrue(myActivity.getActivityResultIsReturned());
    assertEqual(myActivity.getActiityResult(), "This is the result");
  }

  ... ...
}

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