android studio 单元测试 JUnit

环境准备

在 .gradle中配置

defaultConfig {

testInstrumentationRunner “android.support.test.runner.AndroidJUnitRunner”

}

dependencies {

testCompile ‘junit:junit:4.12’

compile ‘com.android.support.test.espresso:espresso-core:2.2.2’

compile ‘com.android.support.test:runner:0.5’

}

纯Java测试

1、测试类

public class JavaTextActivity {

private int date;

public void JavaTextActivity(){

}

public String sayHello(int now , String user){

date = now;

String tall = “Hi,”+user+”.”+getGreeting();

return tall;

}

public String getGreeting() {

if(date == 1)
return "Happy new year!";
else if(date >1 && date<6)
return "Good morning!";
else if(date==6)
return "Good afternoon!";
else
return "Good night!";
}

}

2.测试步骤

选择 JavaTextActivity 类名 —> 右键 Go To —->Test —->Create New Test —–>选中 setUp@Before And tearDown@After ——> OK ——->生成测试类 JavaTextActivityTest

3.测试类

public class JavaTextActivityTest {

private JavaTextActivity javaTextActivity = null;

@Before

public void setUp() throws Exception {

javaTextActivity = new JavaTextActivity();

}

@After
public void tearDown() throws Exception {
javaTextActivity = null;
}

@Test
public void sayHello() throws Exception {

}

@Test
public void testSayHelloInTheMorning() throws Exception{
int date = 2;
String user = "煲约二";
String result = javaTextActivity.sayHello(date,user);
assertEquals(result,"Hi,煲约二.Good morning!");
}

}

4.运行测试类

在工程列表中选中 JavaTextActivityTest ——–>右键 Run “JavaTextActivityTest ”

5.测试类中的方法

在Favorite 窗口中选中 JavaTextActivityTest 中的 testSayHelloInTheMorning（）右键选中

Run

6.测试结果

assertEquals(result,”Hi,煲约二.Good morning!”);

if （result == “Hi,煲约二.Good morning!”）

正确结果 Process finished with exit code 0

else

错误结果