单元测试1(Androidf)

步骤:

      1.确定要测试的类(MathUtils)方法(incrment)。  --incrment

   不能直接在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 
 does not declare uses-library android.test.runner in its AndroidManifest.xml 

       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>