Android JUnit 测试不显示测试栏（Eclipse）

Question

我是 Android 开发应用程序的新手，尝试使用 JUnit 测试框架通过 ActivityInstrumentationTestCase2 类来测试下面的代码，并进行有关 Android 文档中的测试基础知识。但是当测试运行时，我没有得到任何有关测试的信息（Eclipse 中的 JUnit 界面中的红色、绿色、蓝色条）（事实上，我相信测试没有发生，即使控制台说是）。

以下是 JUnit 代码和清单文件：

package gml.android.mixdroid.test;
import java.util.ArrayList;
import gml.android.mixdroid.SeekbarActivity;
import android.test.ActivityInstrumentationTestCase2;
import android.widget.SeekBar;
import android.widget.TextView;

public class SeekBarActivityTest extends ActivityInstrumentationTestCase2<SeekbarActivity> {

private SeekbarActivity mActivity;
private ArrayList<SeekBar> mSeekBars;
private ArrayList<TextView> mProgress;
private ArrayList<TextView> mTracks;

public SeekBarActivityTest(String pkg, Class<SeekbarActivity> activityClass) {
    super("gml.android.mixdroid", SeekbarActivity.class);
}

public void setUp() throws Exception{
     super.setUp();
     mActivity = getActivity();
     mSeekBars = mActivity.getSeekBars();
     mProgress = mActivity.getProgressTextViews();
     mTracks = mActivity.getTrackingTextViews();

}

public void testPreconditions(){
    assertNotNull(mSeekBars);
    assertNotNull(mProgress);
    assertNotNull(mTracks);
    for(SeekBar s : mSeekBars){
        assertNotNull(s);
    }
    for(TextView p : mProgress){
        assertNotNull(p);
    }
    for(TextView t : mTracks){
        assertNotNull(t);
    }
}

public void testInitSeekBars() {
    assertEquals(SeekbarActivity.NUMBER_OF_SEEK_BARS, mSeekBars.size());
}

public void testInitTextViews() {
    assertEquals(SeekbarActivity.NUMBER_OF_SEEK_BARS, mTracks.size());
    assertEquals(SeekbarActivity.NUMBER_OF_SEEK_BARS, mProgress.size());
}
}

Manifest (Activity):

<?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="gml.android.mixdroid"
  android:versionCode="1"
  android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
    <activity android:name=".SeekbarActivity"
              android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

</application>
<uses-sdk android:minSdkVersion="7" />

</manifest> 

Manifest( JUnit):

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  android:versionCode="1"
  android:versionName="1.0" 
  package="gml.android.mixdroid.test">
<application 
    android:icon="@drawable/icon"
     android:label="@string/app_name">
     <uses-library android:name="android.test.runner" />
</application>

<uses-sdk android:minSdkVersion="7" />
<instrumentation 
    android:targetPackage="gml.android.mixdroid.test" 
    android:name="android.test.InstrumentationTestRunner" 

    android:label="Tests for MixDroid App"/>
<activity 
    android:name="gml.android.SeekbarActivity"/>
</manifest> 

在 Logcat 中我收到以下内容

[2011-04-03 03:51:48 - SeekbarTest] Project dependency found, installing: SeekbarActivity 
[2011-04-03 03:51:50 - SeekbarActivity] Application already deployed. No need to reinstall. 
[2011-04-03 03:51:50 - SeekbarTest] Launching instrumentation android.test.InstrumentationTestRunner on device emulator-5554 
[2011-04-03 03:51:53 - SeekbarTest] Collecting test information 
[2011-04-03 03:51:57 - SeekbarTest] Test run failed: Test run incomplete. Expected 1 tests, received 0

： JUnit视图，无信息测试

Answer 1

使用这个构造函数：

public SeekBarActivityTest() {
    super("gml.android.mixdroid", SeekbarActivity.class);
}

Answer 2

1. 在 Eclipse 中，右键单击您的测试项目并运行为 -> Android JUnit 测试
2. 在 DDMS 中检查 logcat，您将看到一些输出
3. 如果一切顺利，您将在 JUnit 视图中看到测试结果