spring mvc测试框架提供了两种方式,独立安装和集成Web环境测试(此种方式并不会集成真正的web环境,而是通过相应的Mock API进行模拟测试,无须启动服务器)
1、mockMvc.perform执行一个请求;
2、MockMvcRequestBuilders.get("/user/1")构造一个请求
3、ResultActions.andExpect添加执行完成后的断言
4、ResultActions.andDo添加一个结果处理器,表示要对结果做点什么事情,比如此处使用MockMvcResultHandlers.print()输出整个响应结果信息。
5、ResultActions.andReturn表示执行完成后返回相应的结果。
MockMvcBuilder是用来构造MockMvc的构造器,其主要有两个实现:StandaloneMockMvcBuilder和DefaultMockMvcBuilder,StandaloneMockMvcBuilder继承了DefaultMockMvcBuilder。直接使用静态工厂MockMvcBuilders创建即可:
MockMvcBuilders.webAppContextSetup(WebApplicationContext context):指定WebApplicationContext,将会从该上下文获取相应的控制器并得到相应的MockMvc;
MockMvcBuilders.standaloneSetup(Object... controllers):通过参数指定一组控制器,这样就不需要从上下文获取了;
其中DefaultMockMvcBuilder还提供了如下API:
addFilters(Filter... filters)/addFilter(Filter filter, String... urlPatterns):添加javax.servlet.Filter过滤器
defaultRequest(RequestBuilder requestBuilder):默认的RequestBuilder,每次执行时会合并到自定义的RequestBuilder中,即提供公共请求数据的;
alwaysExpect(ResultMatcher resultMatcher):定义全局的结果验证器,即每次执行请求时都进行验证的规则;
alwaysDo(ResultHandler resultHandler):定义全局结果处理器,即每次请求时都进行结果处理;
dispatchOptions:DispatcherServlet是否分发OPTIONS请求方法到控制器;
StandaloneMockMvcBuilder继承了DefaultMockMvcBuilder,又提供了如下API:
setMessageConverters(HttpMessageConverter<?>...messageConverters):设置HTTP消息转换器;
setValidator(Validator validator):设置验证器;
setConversionService(FormattingConversionService conversionService):设置转换服务;
addInterceptors(HandlerInterceptor... interceptors)/addMappedInterceptors(String[] pathPatterns, HandlerInterceptor... interceptors):添加spring mvc拦截器;
setContentNegotiationManager(ContentNegotiationManager contentNegotiationManager):设置内容协商管理器;
setAsyncRequestTimeout(long timeout):设置异步超时时间;
setCustomArgumentResolvers(HandlerMethodArgumentResolver... argumentResolvers):设置自定义控制器方法参数解析器;
setCustomReturnValueHandlers(HandlerMethodReturnValueHandler... handlers):设置自定义控制器方法返回值处理器;
setHandlerExceptionResolvers(List<HandlerExceptionResolver> exceptionResolvers)/setHandlerExceptionResolvers(HandlerExceptionResolver... exceptionResolvers):设置异常解析器;
setViewResolvers(ViewResolver...resolvers):设置视图解析器;
setSingleView(View view):设置单个视图,即视图解析时总是解析到这一个(仅适用于只有一个视图的情况);
setLocaleResolver(LocaleResolver localeResolver):设置Local解析器;
setFlashMapManager(FlashMapManager flashMapManager):设置FlashMapManager,如存储重定向数据;
setUseSuffixPatternMatch(boolean useSuffixPatternMatch):设置是否是后缀模式匹配,如“/user”是否匹配"/user.*",默认真即匹配;
setUseTrailingSlashPatternMatch(boolean useTrailingSlashPatternMatch):设置是否自动后缀路径模式匹配,如“/user”是否匹配“/user/”,默认真即匹配;
addPlaceHolderValue(String name, String value) :添加request mapping中的占位符替代;
因为StandaloneMockMvcBuilder不会加载Spring MVC配置文件,因此就不会注册我们需要的一些组件,因此就提供了如上API用于注册我们需要的相应组件。
perform:执行一个RequestBuilder请求,会自动执行SpringMVC的流程并映射到相应的控制器执行处理;
andExpect:添加ResultMatcher验证规则,验证控制器执行完成后结果是否正确;
andDo:添加ResultHandler结果处理器,比如调试时打印结果到控制台;
andReturn:最后返回相应的MvcResult;然后进行自定义验证/进行下一步的异步处理;
MockMvcRequestBuilders主要API:
MockHttpServletRequestBuilder get(String urlTemplate, Object... urlVariables):根据uri模板和uri变量值得到一个GET请求方式的MockHttpServletRequestBuilder;如get("/user/{id}", 1L);
MockHttpServletRequestBuilder post(String urlTemplate, Object... urlVariables):同get类似,但是是POST方法;
MockHttpServletRequestBuilder put(String urlTemplate, Object... urlVariables):同get类似,但是是PUT方法;
MockHttpServletRequestBuilder delete(String urlTemplate, Object... urlVariables) :同get类似,但是是DELETE方法;
MockHttpServletRequestBuilder options(String urlTemplate, Object... urlVariables):同get类似,但是是OPTIONS方法;
ResultActions
调用MockMvc.perform(RequestBuilder requestBuilder)后将得到ResultActions,通过ResultActions完成如下三件事:
ResultActions andExpect(ResultMatcher matcher) :添加验证断言来判断执行请求后的结果是否是预期的;
ResultActions andDo(ResultHandler handler) :添加结果处理器,用于对验证成功后执行的动作,如输出下请求/结果信息用于调试;
MvcResult andReturn() :返回验证成功后的MvcResult;用于自定义验证/下一步的异步处理;(主要是拿到结果进一步做自定义断言)
- String requestBody = "{\"id\":1, \"name\":\"zhang\"}";
- mockMvc.perform(post("/user")
- .contentType(MediaType.APPLICATION_JSON).content(requestBody)
- .accept(MediaType.APPLICATION_JSON)) //执行请求
- .andExpect(content().contentType(MediaType.APPLICATION_JSON)) //验证响应contentType
- .andExpect(jsonPath("$.id").value(1)); //使用Json path验证JSON 请参考http://goessner.net/articles/JsonPath/
- String errorBody = "{id:1, name:zhang}";
- MvcResult result = mockMvc.perform(post("/user")
- .contentType(MediaType.APPLICATION_JSON).content(errorBody)
- .accept(MediaType.APPLICATION_JSON)) //执行请求
- .andExpect(status().isBadRequest()) //400错误请求
- .andReturn();
import org.junit.Before;import org.junit.runner.RunWith;import org.junit.Test;import org.springframework.boot.SpringBootConfiguration;import org.springframework.boot.test.SpringApplicationConfiguration;import org.springframework.http.MediaType;import org.springframework.mock.web.MockSessionCookieConfig;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;import org.springframework.test.context.web.WebAppConfiguration;import org.springframework.test.web.servlet.MockMvc;import org.springframework.test.web.servlet.RequestBuilder;import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;import org.springframework.test.web.servlet.result.MockMvcResultHandlers;import org.springframework.test.web.servlet.setup.MockMvcBuilders;import org.sselab.controller.HelloController;import org.sselab.controller.TestController; import java.nio.charset.Charset; import static org.hamcrest.Matchers.equalTo;import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status; /** * Created by pinker on 2016/10/26. */@RunWith(SpringJUnit4ClassRunner.class)@SpringApplicationConfiguration(classes = MockSessionCookieConfig.class)@WebAppConfigurationpublic class TestJunit { private MockMvc mvc; @Before public void setUp() throws Exception { mvc = MockMvcBuilders.standaloneSetup(new HelloController(), new TestController()).build(); } @Test public void testHelloController() throws Exception { mvc.perform(MockMvcRequestBuilders.get("/hello").accept(MediaType.APPLICATION_JSON)) .andExpect(status().isOk()) .andExpect(content().string(equalTo("Hello"))); } @Test public void testController() throws Exception { //get查一下列表应该为空。 RequestBuilder request = null; request = get("/user"); mvc.perform(request) .andDo(MockMvcResultHandlers.print()) .andExpect(status().isOk()) .andExpect(content().string(equalTo("[]"))); //插入一个数据 request = post("/user").param("id", "2").param("name", "HS").param("age", "24"); mvc.perform(request) .andDo(MockMvcResultHandlers.print()) .andExpect(content().string(equalTo("success"))); //检查刚才插入的数据 request = get("/user"); mvc.perform(request) .andDo(MockMvcResultHandlers.print()) .andExpect(status().isOk()) .andExpect(content().string(equalTo("[{\"id\":2,\"name\":\"HS\",\"age\":24}]"))); //测试put方法 request = put("/user/2") .param("name", "HGod") .param("age", "24"); mvc.perform(request) .andDo(MockMvcResultHandlers.print()) .andExpect(status().isOk()) .andExpect(content().string(equalTo("success!"))); //测试获得一个用户的get方法 request=get("/user/2"); mvc.perform(request) .andDo(MockMvcResultHandlers.print()) .andExpect(content().string(equalTo("{\"id\":2,\"name\":\"HGod\",\"age\":24}"))); //测试删除用户 request=delete("/user/2"); mvc.perform(request) .andDo(MockMvcResultHandlers.print()) .andExpect(content().string(equalTo("success"))) .andReturn(); }}