标签：override sdn puts context sso argument 执行 The new
在Java程序的单元测试中常用的mock工具有Mockito和EasyMock。但是这两种mock工具都无法实现对静态、final、私有方法或类的mock。因此有了功能强大的PowerMock工具。PowerMock并不是一个独立、全新的工具而是在Mockito和EasyMock的基础上进行的扩展，它分别有针对Mockito级EasyMock的扩展实现。本文主要介绍PowerMock的常见用法：
1.pom依赖
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10<version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-module-junit4</artifactId>
<version>1.6.3</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-api-mockito</artifactId>
<version>1.6.3</version>
<scope>test</scope>
</dependency>
2.基本用法
2.1 测试类加上必要的注解
@RunWith(PowerMockRunner.class)
@PrepareForTest({ExtensionLoader.class,Configs.class}) //静态类，测试类本身（需要mock构造方法时）
@PowerMockIgnore("javax.management.*")
2.2 mock基本对象
测试 convert.convertAndHanlder(method,ref,bead)方法
@Mock Convert convert; when(convert.convertAndHanlder(eq(method),eq(ref),eq(bead))).thenReturn(bead);
2.3 mock无返回值的方法
@Mock ProviderComposeConfig providerComposeConfig; doNothing().when(providerComposeConfig).putSync(eq(providerConfig));
2.4 mock方法执行异常场景
@Mock
ProviderComposeConfig providerComposeConfig;
doThrow(new Exception("执行失败")).when(providerComposeConfig).putSync(eq(providerConfig));
2.5 mock 静态方法
测试Configs.getConfig（ProviderComposeConfig.class）方法
前提：@PrepareForTest注解中添加该类：ProviderComposeConfig.class
@Mock ProviderComposeConfig configs; PowerMockito.mockStatic(Configs.class); when(Configs.getConfig(eq(ProviderComposeConfig.class))).thenReturn(configs);
2.6 mock 构造方法
前提：@PrepareForTest注解中添加该类：HookContext.class
@Mock HookContext context; //无参构造 PowerMockito.whenNew(HookContext.class).withNoArguments().thenReturn(context); //有参构造 PowerMockito.whenNew(HookContext.class).withArguments(anystring()).thenReturn(context);
③完成实例
被测试类：
public class HandlerHook {
public final static String id = "handler";
@Override
public Bead doCall(HookContext context, Bead bead, AccessId id) throws Throwable {
ProviderComposeConfig configs = Configs.getConfig(ProviderComposeConfig.class);
ProviderConfig config = configs == null ? null : configs.get(id);
if (config == null) {
// 即没有该服务，1.本地调用 2.客户端信息有误，访问IP:PORT 却没有服务
return null;
}
// 拿到转换器，调用
Convert convert = ExtensionLoader.getExtensionLoader(Convert.class).getExtensionById(ConvertProcessor.id);
return convert.convertAndHanlder(config.getMethod(), config.getRef(), bead);
}
}
测试类：
@RunWith(PowerMockRunner.class)
@PrepareForTest({ExtensionLoader.class,Configs.class})
@PowerMockIgnore("javax.management.*")
public class HandlerHookTest {
@Mock
HookContext hookContext;
@Mock
Bead bead;
@Mock
AccessId accessId;
@Mock
ExtensionLoader<Convert> extensionLoader;
@Mock
ProviderComposeConfig configs;
@Mock
ProviderConfig config;
@Mock
Method method ;
@Mock
Object ref;
@Mock
Convert convert;
private HandlerHook handlerHook = new HandlerHook();
@Test
public void doCall() throws Throwable {
PowerMockito.mockStatic(Configs.class);
when(Configs.getConfig(eq(ProviderComposeConfig.class))).thenReturn(configs);
when(configs.get(eq(accessId))).thenReturn(config);
PowerMockito.mockStatic(ExtensionLoader.class);
when(ExtensionLoader.getExtensionLoader(eq(Convert.class))).thenReturn(extensionLoader);
when(extensionLoader.getExtensionById(eq("map"))).thenReturn(convert);
when(config.getMethod()).thenReturn(method);
when(config.getRef()).thenReturn(ref);
when(convert.convertAndHanlder(eq(method),eq(ref),eq(bead))).thenReturn(bead);
assertEquals(bead, handlerHook.doCall(hookContext, bead, accessId));
}
}
标签：override sdn puts context sso argument 执行 The new
原文地址：https://www.cnblogs.com/cowboys/p/9290950.html
