Fix MockHttpServletRequest.java

[cnabro]

Description

• From springframework 5.2 version application/json; charset=utf-8 is no longer supported, but MockHttpServletRequest still uses charset by default, so the mockMVC test fails.

Sample Test

• It will be failed

    @Test
    public void testCreateCourse() throws Exception {
        Course course = new Course();
        course.setId(1L);
        course.setTitle("Test Course");

        given(courseService.saveCourse(any(Course.class))).willReturn(course);

        mockMvc.perform(post("/courses")
                        .contentType(MediaType.APPLICATION_JSON)
                        .content("{\"title\":\"Test Course\"}"))
                .andExpect(status().isOk())
                .andExpect(jsonPath("$.id").value(1L))
                .andExpect(jsonPath("$.title").value("Test Course"));
    }

• Error Details

MockHttpServletRequest:
      HTTP Method = PUT
      Request URI = /courses/1
       Parameters = {}
          Headers = [Content-Type:"application/json;charset=UTF-8", Content-Length:"26"]
             Body = {"title":"Updated Course"}
    Session Attrs = {}

Handler:
             Type = com.sample.test.domain.courses.controller.CourseController
           Method = com.sample.test.domain.courses.controller.CourseController#updateCourse(Long, Course)

Async:
    Async started = false
     Async result = null

Resolved Exception:
             Type = org.springframework.web.HttpMediaTypeNotSupportedException

ModelAndView:
        View name = null
             View = null
            Model = null

FlashMap:
       Attributes = null

MockHttpServletResponse:
           Status = 415
    Error message = Content-Type 'application/json;charset=UTF-8' is not supported.
          Headers = [Accept:"application/json, application/*+json"]
     Content type = null
             Body = 
    Forwarded URL = null
   Redirected URL = null
          Cookies = []

Status
Expected :200
Actual   :415

[rstoyanchev]

@cnabro it's not clear how you get the problem. Using this:

        mockMvc.perform(post("/courses")
                        .contentType(MediaType.APPLICATION_JSON)
                        .content("{\"title\":\"Test Course\"}")

results in:

MockHttpServletRequest:
      HTTP Method = POST
      Request URI = /test
       Parameters = {}
          Headers = [Content-Type:"application/json", Content-Length:"26"]
             Body = <no character encoding set>
    Session Attrs = {}

[cnabro]

@rstoyanchev
In my case, When the CharacterEncodingFilter runs, character encoding is set to UTF-8 and charset=utf-8; is added to updateContentTypeHeader:414, MockHttpServletRequest (org.springframework.mock.web).

Test Code

@ExtendWith(SpringExtension.class)
@WebMvcTest(CourseController.class)
public class CourseControllerTest {

    @Autowired
    private MockMvc mockMvc;

    @Test
    public void testCreateCourse() throws Exception {
        Course course = new Course();
        course.setId(1L);
        course.setTitle("Test Course");

        given(courseService.saveCourse(any(Course.class))).willReturn(course);

        mockMvc.perform(post("/courses")
                        .contentType(MediaType.APPLICATION_JSON)
                        .content("{\"title\":\"Test Course\"}"))
                .andExpect(status().isOk())
                .andExpect(jsonPath("$.id").value(1L))
                .andExpect(jsonPath("$.title").value("Test Course"));
    }
}

Stacktrace

>> updateContentTypeHeader:414, MockHttpServletRequest (org.springframework.mock.web)
>> setCharacterEncoding:407, MockHttpServletRequest (org.springframework.mock.web)
>> doFilterInternal:195, CharacterEncodingFilter (org.springframework.web.filter)
doFilter:116, OncePerRequestFilter (org.springframework.web.filter)
doFilter:151, MockMvcFilterDecorator (org.springframework.test.web.servlet.setup)
doFilter:132, MockFilterChain (org.springframework.mock.web)
perform:201, MockMvc (org.springframework.test.web.servlet)
testUpdateCourse:58, CourseControllerTest (com.sample.test.domain.courses.controller)
invoke0:-1, NativeMethodAccessorImpl (jdk.internal.reflect)
invoke:77, NativeMethodAccessorImpl (jdk.internal.reflect)
invoke:43, DelegatingMethodAccessorImpl (jdk.internal.reflect)
invoke:568, Method (java.lang.reflect)
invokeMethod:728, ReflectionUtils (org.junit.platform.commons.util)
proceed:60, MethodInvocation (org.junit.jupiter.engine.execution)
proceed:131, InvocationInterceptorChain$ValidatingInvocation (org.junit.jupiter.engine.execution)
intercept:156, TimeoutExtension (org.junit.jupiter.engine.extension)
interceptTestableMethod:147, TimeoutExtension (org.junit.jupiter.engine.extension)
interceptTestMethod:86, TimeoutExtension (org.junit.jupiter.engine.extension)
apply:-1, TestMethodTestDescriptor$$Lambda$197/0x0000007001139860 (org.junit.jupiter.engine.descriptor)
lambda$ofVoidMethod$0:103, InterceptingExecutableInvoker$ReflectiveInterceptorCall (org.junit.jupiter.engine.execution)
apply:-1, InterceptingExecutableInvoker$ReflectiveInterceptorCall$$Lambda$198/0x0000007001139c90 (org.junit.jupiter.engine.execution)
lambda$invoke$0:93, InterceptingExecutableInvoker (org.junit.jupiter.engine.execution)
apply:-1, InterceptingExecutableInvoker$$Lambda$482/0x00000070011cd9c8 (org.junit.jupiter.engine.execution)
proceed:106, InvocationInterceptorChain$InterceptedInvocation (org.junit.jupiter.engine.execution)
proceed:64, InvocationInterceptorChain (org.junit.jupiter.engine.execution)
chainAndInvoke:45, InvocationInterceptorChain (org.junit.jupiter.engine.execution)
invoke:37, InvocationInterceptorChain (org.junit.jupiter.engine.execution)
invoke:92, InterceptingExecutableInvoker (org.junit.jupiter.engine.execution)
invoke:86, InterceptingExecutableInvoker (org.junit.jupiter.engine.execution)
lambda$invokeTestMethod$7:218, TestMethodTestDescriptor (org.junit.jupiter.engine.descriptor)
execute:-1, TestMethodTestDescriptor$$Lambda$1063/0x00000070015c88c0 (org.junit.jupiter.engine.descriptor)
execute:73, ThrowableCollector (org.junit.platform.engine.support.hierarchical)
invokeTestMethod:214, TestMethodTestDescriptor (org.junit.jupiter.engine.descriptor)
execute:139, TestMethodTestDescriptor (org.junit.jupiter.engine.descriptor)
execute:69, TestMethodTestDescriptor (org.junit.jupiter.engine.descriptor)
lambda$executeRecursively$6:151, NodeTestTask (org.junit.platform.engine.support.hierarchical)
execute:-1, NodeTestTask$$Lambda$293/0x00000070011575f0 (org.junit.platform.engine.support.hierarchical)
execute:73, ThrowableCollector (org.junit.platform.engine.support.hierarchical)
lambda$executeRecursively$8:141, NodeTestTask (org.junit.platform.engine.support.hierarchical)
invoke:-1, NodeTestTask$$Lambda$292/0x00000070011573c0 (org.junit.platform.engine.support.hierarchical)
around:137, Node (org.junit.platform.engine.support.hierarchical)
lambda$executeRecursively$9:139, NodeTestTask (org.junit.platform.engine.support.hierarchical)
execute:-1, NodeTestTask$$Lambda$291/0x0000007001156f88 (org.junit.platform.engine.support.hierarchical)
execute:73, ThrowableCollector (org.junit.platform.engine.support.hierarchical)
executeRecursively:138, NodeTestTask (org.junit.platform.engine.support.hierarchical)
execute:95, NodeTestTask (org.junit.platform.engine.support.hierarchical)
accept:-1, SameThreadHierarchicalTestExecutorService$$Lambda$297/0x0000007001155240 (org.junit.platform.engine.support.hierarchical)
forEach:1511, ArrayList (java.util)
invokeAll:41, SameThreadHierarchicalTestExecutorService (org.junit.platform.engine.support.hierarchical)
lambda$executeRecursively$6:155, NodeTestTask (org.junit.platform.engine.support.hierarchical)
execute:-1, NodeTestTask$$Lambda$293/0x00000070011575f0 (org.junit.platform.engine.support.hierarchical)
execute:73, ThrowableCollector (org.junit.platform.engine.support.hierarchical)
lambda$executeRecursively$8:141, NodeTestTask (org.junit.platform.engine.support.hierarchical)
invoke:-1, NodeTestTask$$Lambda$292/0x00000070011573c0 (org.junit.platform.engine.support.hierarchical)
around:137, Node (org.junit.platform.engine.support.hierarchical)
lambda$executeRecursively$9:139, NodeTestTask (org.junit.platform.engine.support.hierarchical)
execute:-1, NodeTestTask$$Lambda$291/0x0000007001156f88 (org.junit.platform.engine.support.hierarchical)
execute:73, ThrowableCollector (org.junit.platform.engine.support.hierarchical)
executeRecursively:138, NodeTestTask (org.junit.platform.engine.support.hierarchical)
execute:95, NodeTestTask (org.junit.platform.engine.support.hierarchical)
accept:-1, SameThreadHierarchicalTestExecutorService$$Lambda$297/0x0000007001155240 (org.junit.platform.engine.support.hierarchical)
forEach:1511, ArrayList (java.util)
invokeAll:41, SameThreadHierarchicalTestExecutorService (org.junit.platform.engine.support.hierarchical)
lambda$executeRecursively$6:155, NodeTestTask (org.junit.platform.engine.support.hierarchical)
execute:-1, NodeTestTask$$Lambda$293/0x00000070011575f0 (org.junit.platform.engine.support.hierarchical)
execute:73, ThrowableCollector (org.junit.platform.engine.support.hierarchical)
lambda$executeRecursively$8:141, NodeTestTask (org.junit.platform.engine.support.hierarchical)
invoke:-1, NodeTestTask$$Lambda$292/0x00000070011573c0 (org.junit.platform.engine.support.hierarchical)
around:137, Node (org.junit.platform.engine.support.hierarchical)
lambda$executeRecursively$9:139, NodeTestTask (org.junit.platform.engine.support.hierarchical)
execute:-1, NodeTestTask$$Lambda$291/0x0000007001156f88 (org.junit.platform.engine.support.hierarchical)
execute:73, ThrowableCollector (org.junit.platform.engine.support.hierarchical)
executeRecursively:138, NodeTestTask (org.junit.platform.engine.support.hierarchical)
execute:95, NodeTestTask (org.junit.platform.engine.support.hierarchical)
submit:35, SameThreadHierarchicalTestExecutorService (org.junit.platform.engine.support.hierarchical)
execute:57, HierarchicalTestExecutor (org.junit.platform.engine.support.hierarchical)
execute:54, HierarchicalTestEngine (org.junit.platform.engine.support.hierarchical)
execute:107, EngineExecutionOrchestrator (org.junit.platform.launcher.core)
execute:88, EngineExecutionOrchestrator (org.junit.platform.launcher.core)
lambda$execute$0:54, EngineExecutionOrchestrator (org.junit.platform.launcher.core)
accept:-1, EngineExecutionOrchestrator$$Lambda$247/0x00000070011434c8 (org.junit.platform.launcher.core)
withInterceptedStreams:67, EngineExecutionOrchestrator (org.junit.platform.launcher.core)
execute:52, EngineExecutionOrchestrator (org.junit.platform.launcher.core)
execute:114, DefaultLauncher (org.junit.platform.launcher.core)
execute:86, DefaultLauncher (org.junit.platform.launcher.core)
execute:86, DefaultLauncherSession$DelegatingLauncher (org.junit.platform.launcher.core)
processAllTestClasses:119, JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor (org.gradle.api.internal.tasks.testing.junitplatform)
access$000:94, JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor (org.gradle.api.internal.tasks.testing.junitplatform)
stop:89, JUnitPlatformTestClassProcessor (org.gradle.api.internal.tasks.testing.junitplatform)
stop:62, SuiteTestClassProcessor (org.gradle.api.internal.tasks.testing)
invoke0:-1, NativeMethodAccessorImpl (jdk.internal.reflect)
invoke:77, NativeMethodAccessorImpl (jdk.internal.reflect)
invoke:43, DelegatingMethodAccessorImpl (jdk.internal.reflect)
invoke:568, Method (java.lang.reflect)
dispatch:36, ReflectionDispatch (org.gradle.internal.dispatch)
dispatch:24, ReflectionDispatch (org.gradle.internal.dispatch)
dispatch:33, ContextClassLoaderDispatch (org.gradle.internal.dispatch)
invoke:94, ProxyDispatchAdapter$DispatchingInvocationHandler (org.gradle.internal.dispatch)
stop:-1, $Proxy2 (jdk.proxy1)
run:193, TestWorker$3 (org.gradle.api.internal.tasks.testing.worker)
executeAndMaintainThreadName:129, TestWorker (org.gradle.api.internal.tasks.testing.worker)
execute:100, TestWorker (org.gradle.api.internal.tasks.testing.worker)
execute:60, TestWorker (org.gradle.api.internal.tasks.testing.worker)
execute:56, ActionExecutionWorker (org.gradle.process.internal.worker.child)
call:113, SystemApplicationClassLoaderWorker (org.gradle.process.internal.worker.child)
call:65, SystemApplicationClassLoaderWorker (org.gradle.process.internal.worker.child)
run:69, GradleWorkerMain (worker.org.gradle.process.internal.worker)
main:74, GradleWorkerMain (worker.org.gradle.process.internal.worker)