单元测试1(Androidf)

步骤:

incrment)。  --incrment

MathUtils类中的main方法直接测试，会有异常,如下:

If you would like to submit a bug report, please visit:
​​​     http://java.sun.com/webapps/bugreport/crash.jsp#​​

       2.测试incrment方法,Test类需要继承AndroidTestCase

此时不能测试,测试会有如下错误:

JunitTest does not specify a android.test.InstrumentationTestRunner instrumentation or 

       3.在清单文件中指定测试信息和要测试的包， 指定引用的测试包 

1.

<span style="font-size:14px;">package com.ithema28.junittest.test;

import com.ithema28.junittest.utlis.MathUtils;

import android.test.AndroidTestCase;

public class Test extends AndroidTestCase{
  
   
  public void test(){
    //  System.out.println("test dsa ");
    
    int result = MathUtils.incrment(9, 10);
    //断言  ，断定某一个对象就是某一个值
    assertEquals(19, result);
  }
  /*
    JunitTest does not specify a android.test.InstrumentationTestRunner instrumentation or 
    does not declare uses-library android.test.runner in its AndroidManifest.xml 
  */
  
}
</span>

2.

<span style="font-size:14px;">package com.ithema28.junittest.utlis;

import android.util.Log;

public class MathUtils {
  
  
  /**
   * 加法运算
   * */
  public static int incrment(int x,int y){
    /*
      这几个BUG依次增强
     */
    Log.v("MathUtils", "黑色:" + x + " + " +   y   + " = " + (x+y));
    Log.d("MathUtils","蓝色:" + x + " + " +   y   + " = " + (x+y));
    Log.i("MathUtils", "绿色:" +x + " + " +   y   + " = " + (x+y));
    Log.w("MathUtils","黄色:" + x + " + " +   y   + " = " + (x+y));
    Log.e("MathUtils","红色:" + x + " + " +   y   + " = " + (x+y));
    
    return x+y;
  }
  /*
     这样测试不对
     If you would like to submit a bug report, please visit:
      http://java.sun.com/webapps/bugreport/crash.jsp#
   * */
  /*
  public static void main(String[] args) {
    
    MathUtils m = new MathUtils();
    int result = m.incrment(1,2);
    System.out.println(result);
  }
  */
  
}
</span>

3.

<pre name="code" class="html"><?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.ithema28.junittest"
    android:versionCode="1"
    android:versionName="1.0" >


<!--     指定测试信息和要测试的包 -->
    <instrumentation android:name="android.test.InstrumentationTestRunner"
        android:targetPackage="com.ithema28.junittest"></instrumentation>
    
    <uses-sdk
        android:minSdkVersion="14"
        android:targetSdkVersion="21" />
    
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        
<!--         指定引用的测试包 -->
        <uses-library  android:name="android.test.runner"/>
        
        
        <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>