java.lang.AssertionError: Content type not set while junit Spring MVC Controller?
Solution 1
I see a couple of issues with the request mapped method:
Ideally, you should have a @ResponseBody
annotation on your method, to indicate that the returned content is to be streamed out:
@RequestMapping(value = "index", method = RequestMethod.GET)
@ResponseBody
public HashMap<String, String> handleRequest() {
HashMap<String, String> model = new HashMap<String, String>();
String name = "Hello World";
model.put("greeting", name);
return model;
}
Now with this done, your test can look like this:
mockMvc.perform(get("/index").contentType(MediaType.APPLICATION_JSON)).andExpect(status().isOk()).andExpect(content().contentTypeCompatibleWith("application/json"))
.andExpect(jsonPath("$.greeting").value("Hello World"));
In your case, what is happening is Spring is trying to figure out the view name and is getting the view name as index
, which is again the controller path, thus the circular view path error that you are seeing.
Solution 2
You should also check your request mappings:
Does get("/...") match @RequestMapping ?
If the handleRequest is never called, you will get the same error Content type not set
.
Comments
-
AKIWEB almost 2 years
I am using JUnit to test my Spring MVC controller. Below is my method which returns a
index.jsp
page and showsHello World
on the screen -@RequestMapping(value = "index", method = RequestMethod.GET) public HashMap<String, String> handleRequest() { HashMap<String, String> model = new HashMap<String, String>(); String name = "Hello World"; model.put("greeting", name); return model; }
And below is my JUnit test for the above method:
public class ControllerTest { private MockMvc mockMvc; @Before public void setup() throws Exception { InternalResourceViewResolver viewResolver = new InternalResourceViewResolver(); viewResolver.setPrefix("/WEB-INF/views/"); viewResolver.setSuffix(".jsp"); this.mockMvc = standaloneSetup(new Controller()).setViewResolvers(viewResolver).build(); } @Test public void test01_Index() throws Exception { mockMvc.perform(get("/index")).andExpect(status().isOk()).andExpect(content().contentType("application/json")) .andExpect(jsonPath("$.greeting").value("Hello World")); } }
Above junit was working fine when I debugged it but when I ran the junit as
run as junit
, it gave me this error -MockMvc : Circular view path [view]: would dispatch back to the current handler URL [/view] again
So to fix that I followed this tutorial and after that I am getting this exception -
java.lang.AssertionError: Content type not set at org.springframework.test.util.AssertionErrors.fail(AssertionErrors.java:39) at org.springframework.test.util.AssertionErrors.assertTrue(AssertionErrors.java:72) at org.springframework.test.web.servlet.result.ContentResultMatchers$1.match(ContentResultMatchers.java:75) at org.springframework.test.web.servlet.MockMvc$1.andExpect(MockMvc.java:141) at com.ebay.personalization.bullseye.zookeeper.test.ZookeeperControllerTest.test01_Index(ZookeeperControllerTest.java:32) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:76) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:602) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) at org.junit.runners.ParentRunner.run(ParentRunner.java:236) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
What am I doing wrong here? On the .jsp page it shows
Hello World
..I am following up on my previous question here