JMockit常用操作
2024-08-27 00:28:33
JMockit常用操作
2017-11-30 转自:http://blog.csdn.net/foreverling/article/details/51234149
目录
1 基本概念
1.1 常用注解
1.2 常用的类
2 实例演示
2.1 Status-based
2.1.1 实例1:Mocked - 被Mock修饰的对象,对应的类和实例都会受影响
2.1.2 实例2:injectable - 仅Mock被修饰的对象
2.1.3 实例3:Delegate - 自己指定返回值,适合那种需要参数决定返回值的场景
2.2 Behavior-based
2.2.1 实例1:Mock对象公有方法
2.2.2 实例2:Mock对象私有方法
2.2.3 实例3:Mock接口
源代码:JMockitTest.zip
JMockit教程:http://jmockit.org/tutorial.html
1 基本概念
1.1 常用注解
- @Mocked:被修饰的对象将会被Mock,对应的类和实例都会受影响(同一个测试用例中)
- @Injectable:仅Mock被修饰的对象
- @Capturing:可以mock接口以及其所有的实现类
- @Mock:MockUp模式中,指定被Fake的方法
1.2 常用的类
- Expectations:期望,指定的方法必须被调用
- StrictExpectations:严格的期望,指定方法必须按照顺序调用
- NonStrictExpectations:非严格的期望,是否调用和顺序不作要求
- Verifications:验证,一般配合NonStrictExpectations来使用
- Invocation:工具类,可以获取调用信息
- Delegate:自己指定返回值,适合那种需要参数决定返回值的场景,只需指定匿名子类就可以。
- MockUp:模拟函数实现
- Deencapsulation:反射工具类
2 实例演示
现有两个类作为测试对象: SimpleTool.java、UseSimpleTool.java
SimpleTool.java代码如下:
public class SimpleTool {
public String fun1(String str) {
return "real: public String fun1(" + str + ")";
} private String fun2(String str) {
return "real: private String fun2(" + str + ")";
} public String fun3(String str) {
return "real: public String fun3(" + str + ")";
} public String fun4(String str) {
return fun2(str);
}
}
UseSimpleTool.java代码如下:
public class UseSimpleTool {
public String fun1(String name) {
SimpleTool simpleTool = new SimpleTool();
return simpleTool.fun1(name);
}
}
2.1 Status-based
2.1.1 实例1:Mocked - 被Mock修饰的对象,对应的类和实例都会受影响
import com.demo.SimpleTool;
import com.demo.UseSimpleTool;
import mockit.Expectations;
import mockit.Mocked;
import mockit.Verifications;
import mockit.integration.junit4.JMockit;
import org.junit.Test;
import org.junit.runner.RunWith; @RunWith(JMockit.class)
public class MockedAnnotationTest {
@Mocked
SimpleTool simpleTool; @Test
public void testExpectation() {
//未mock函数返回null
new Expectations() {
{
simpleTool.fun1(anyString);
result = "MOCK";
}
}; System.out.println(simpleTool.fun1("param"));
System.out.println(simpleTool.fun3("param"));
System.out.println(new UseSimpleTool().fun1("param")); new Verifications() {
{
simpleTool.fun1(anyString);
times = 2;
}
};
}
}
输出:
MOCK
null
MOCK
2.1.2 实例2:injectable - 仅Mock被修饰的对象
import com.demo.SimpleTool;
import com.demo.UseSimpleTool;
import mockit.Expectations;
import mockit.Injectable;
import mockit.Verifications;
import mockit.integration.junit4.JMockit;
import org.junit.Test;
import org.junit.runner.RunWith; @RunWith(JMockit.class)
public class InjectableAnnotationTest {
@Injectable
SimpleTool simpleTool; @Test
public void testExpectation() {
//未mock函数返回null
new Expectations() {
{
simpleTool.fun1(anyString);
result = "MOCK";
}
}; System.out.println(simpleTool.fun1("param"));
System.out.println(simpleTool.fun3("param"));
System.out.println(new UseSimpleTool().fun1("param")); new Verifications() {
{
simpleTool.fun1(anyString);
times = 1;
}
};
}
}
输出:
MOCK
null
real: public String fun1(param)
2.1.3 实例3:Delegate - 自己指定返回值,适合那种需要参数决定返回值的场景
import com.demo.SimpleTool;
import com.demo.UseSimpleTool;
import mockit.Delegate;
import mockit.Expectations;
import mockit.Mocked;
import mockit.Verifications;
import mockit.integration.junit4.JMockit;
import org.junit.Test;
import org.junit.runner.RunWith; @RunWith(JMockit.class)
public class DelegateResultTest {
@Mocked
SimpleTool simpleTool; @Test
public void testExpectation() { new Expectations() {
{
simpleTool.fun1(anyString);
result = new Delegate<String>() {
public String aDelegateMethod(String str) {
return str.equals("param0") ? "MOCK0" : "MOCK1";
}
};
}
}; System.out.println(simpleTool.fun1("param0"));
System.out.println(simpleTool.fun3("param"));
System.out.println(new UseSimpleTool().fun1("param1")); new Verifications() {
{
simpleTool.fun1(anyString);
times = 2;
}
};
}
}
输出:
MOCK0
null
MOCK1
2.2 Behavior-based
2.2.1 实例1:Mock对象公有方法
import com.demo.SimpleTool;
import com.demo.UseSimpleTool;
import mockit.Mock;
import mockit.MockUp;
import org.junit.Test; public class MockPublicMethodTest {
@Test
public void testMockUp() {
//影响该类所有实例
new MockUp<SimpleTool>(){
//未mock函数不受影响
@Mock
public String fun1(String str) {
return "(MOCK)";
}
}; SimpleTool simpleTool = new SimpleTool();
System.out.println(simpleTool.fun1("param"));
System.out.println(simpleTool.fun3("param"));
System.out.println(new UseSimpleTool().fun1("param"));
}
}
输出:
(MOCK)
real: public String fun3(param)
(MOCK)
2.2.2 实例2:Mock对象私有方法
import com.demo.SimpleTool;
import com.demo.UseSimpleTool;
import mockit.Mock;
import mockit.MockUp;
import org.junit.Test; public class MockPublicMethodTest {
@Test
public void testMockUp() {
//影响该类所有实例
new MockUp<SimpleTool>(){
//未mock函数不受影响
@Mock
public String fun1(String str) {
return "(MOCK)";
}
}; SimpleTool simpleTool = new SimpleTool();
System.out.println(simpleTool.fun1("param"));
System.out.println(simpleTool.fun3("param"));
System.out.println(new UseSimpleTool().fun1("param"));
}
}
输出:
real: public String fun1(param)
real: public String fun3(param)
(MOCK)
2.2.3 实例3:Mock接口
两个类作为测试对象:SimpleInterface、SimpleInterfaceImpl
SimpleInterface代码如下:
public interface SimpleInterface {
String getCityName();
String getAreaName();
}
SimpleInterfaceImpl代码如下:
public class SimpleInterfaceImpl implements SimpleInterface {
public String getCityName() {
return "default city";
}
public String getAreaName() {
return "default area";
}
}
实例
import com.demo.SimpleInterface;
import com.demo.SimpleInterfaceImpl;
import mockit.Injectable;
import mockit.Mock;
import mockit.MockUp;
import mockit.integration.junit4.JMockit;
import org.junit.Test;
import org.junit.runner.RunWith; @RunWith(JMockit.class)
public class MockInterfaceTest {
//此处使用Injectable和Mocked为一样的效果
@Injectable
SimpleInterface simpleInterface; @Test
public void testUpper() throws Exception {
SimpleInterface mockInstance = new MockUp<SimpleInterface>() {
@Mock
public String getCityName() {
return "BEIJING(MOCK)";
} @Mock
public String getAreaName() {
return "HUABEI(MOCK)";
} }.getMockInstance(); System.out.println(mockInstance.getCityName());
System.out.println(mockInstance.getAreaName());
System.out.println(simpleInterface.getCityName());
System.out.println(simpleInterface.getAreaName());
SimpleInterfaceImpl simpleInterfaceImpl = new SimpleInterfaceImpl();
System.out.println(simpleInterfaceImpl.getCityName());
System.out.println(simpleInterfaceImpl.getAreaName());
}
}
输出:
BEIJING(MOCK)
HUABEI(MOCK)
null
null
default city
default area
最新文章
- CSS知识总结(二)
- Office 365系列六 ------ 创建sharepoint online网站
- enum与typedef enum的用法
- hdu2010
- hdu 3303 Harmony Forever (线段树 + 抽屉原理)
- docker中搭建jenkins环境
- php常用mysql函数
- Python网络编程——获取远程设备的IP地址
- dubbo 的monitor监视器安装问题——————monitor一直处于正在启动状态
- finally语句包含return的情况
- C#使用FFmpeg 将视频格式转换成Gif图片示例
- mysql explain和profiling
- CentOS 6.5 通过命令行安装发送邮件
- Java基础系列--03_Java中的方法描述
- idea远程打断点
- 解决IDEA安装Python插件,下载失败的方法
- Linux操作汇总
- Redis各种数据类型的应用场景
- REdis Asynchronous AOF fsync is taking too long
- [SCOI2005]王室联邦(构造)