package com.example.javabasic;
public class CalculService {
public int add(int x,int y){
return x+y;
}
public static void main(String[] args){
System.out.println("");
}
}
直接运行上面的代码，会抛出以下异常。
android 运行在Dalvik虚拟机下，System.out 运行在jvm下。
android下的Junit框架，需要继承 AndroidTestCase.
package com.example.test;
import com.example.javabasic.CalculService;
import android.test.AndroidTestCase;
public class TestCalcul extends AndroidTestCase {
public void add(){
CalculService service = new CalculService();
int count = service.add(10, 12);
// 断言
assertEquals(19, count);
}
}
抛出异常，
[2015-06-10 22:23:33 - JavaBasic] JavaBasic does not specify a android.test.InstrumentationTestRunner instrumentation or does not declare uses-library android.test.runner in its AndroidManifest.xml
没有在AndroidManifest.xml中配置InstrumentationTestRunner。
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.javabasic" android:versionCode="1" android:versionName="1.0" > <!-- 指定测试包 --> <instrumentation android:name="android.test.InstrumentationTestRunner" android:targetPackage="com.example.test"> </instrumentation> <uses-sdk android:minSdkVersion="19" android:targetSdkVersion="22" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <uses-library android:name="android.test.runner"></uses-library> <activity android:name=".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> </application> </manifest> |
