废话不说，一直报错。网上介绍的都是缺少如下声明之类。
但注意的是工程配置是导出junit包， 路径为 project上右键 --> properties -> java build path --> order and export --> 选中 junit -->重新编译测试
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:andro >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="hp.smpf.formddx.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<uses-library android:name="android.test.runner" />
</application>
<instrumentation
android:name="android.test.InstrumentationTestRunner"
android:targetPackage="hp.smpf.formddx" />
</manifest>