Best Mockito code snippet using org.mockitousage.verification.VerificationWithTimeoutTest.should_verify_with_only_and_fail
Source:VerificationWithTimeoutTest.java
...132 verify(mock, timeout(100).only()).oneArg('c');133 }134 @Test135 @Ignore("not testable, probably timeout().only() does not make sense")136 public void should_verify_with_only_and_fail() {137 // when138 async.runAfter(10, callMock('c'));139 async.runAfter(50, callMock('c'));140 // then141 Assertions.assertThatThrownBy(new ThrowableAssert.ThrowingCallable() {142 @Override143 public void call() {144 verify(mock, after(200).only()).oneArg('c');145 }146 }).isInstanceOf(AssertionError.class);147 }148 @Test149 @Ignore //TODO nice to have150 public void should_verify_with_only_and_fail_early() {151 // when152 callMock('c');153 callMock('c');154 watch.start();155 // then156 Assertions.assertThatThrownBy(new ThrowableAssert.ThrowingCallable() {157 @Override158 public void call() {159 verify(mock, timeout(2000).only()).oneArg('c');160 }161 }).isInstanceOf(AssertionError.class).hasMessageContaining("Wanted but not invoked"); //TODO specific exception162 watch.assertElapsedTimeIsLessThan(1000, TimeUnit.MILLISECONDS);163 }164 private Runnable callMock(final char c) {...
should_verify_with_only_and_fail
Using AI Code Generation
1public void should_verify_with_only_and_fail() throws Exception {2 List list = mock(List.class);3 when(list.get(0)).thenReturn("foo");4 list.get(0);5 Thread.sleep(100);6 verify(list, only()).get(0);7}8list.get(0);9-> at org.mockitousage.verification.VerificationWithTimeoutTest.should_verify_with_only_and_fail(VerificationWithTimeoutTest.java:35)10However, I would expect the test to pass because the method was called only once. The only difference between the only() and atMostOnce() is that the latter one does not fail if the method is not called at all. But in my case, the method is called once, so I would expect the test to pass. Is this a bug or am I missing something?11I have a use case where I need to verify that a method is called only once during a period of time. I have tried the following code: ``` @Test public void should_verify_with_only_and_fail() throws Exception { List list = mock(List.class); when(list.get(0)).thenReturn("foo"); list.get(0); Thread.sleep(100); verify(list, only()).get(0); } ``` The test fails with the following error: ``` org.mockito.exceptions.verification.WantedButNotInvoked: Wanted but not invoked: list.get(0); -> at org.mockitousage.verification.VerificationWithTimeoutTest.should_verify_with_only_and_fail(VerificationWithTimeoutTest.java:35) ``` However, I would expect the test to pass because the method was called only once. The only difference between the only() and atMostOnce() is that the latter one does not fail if the method is not called at all. But in my case, the method is called once, so I would expect the test to pass. Is this a bug or am I missing something? Thanks
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As a starting point and demonstration for the principal you can start with the following snippet.
// define the headers you want to be returned
Map<String, String> headers = new HashMap<>();
headers.put(null, "HTTP/1.1 200 OK");
headers.put("Content-Type", "text/html");
// create an Enumeration over the header keys
Enumeration<String> headerNames = Collections.enumeration(headers.keySet());
// mock HttpServletRequest
HttpServletRequest request = mock(HttpServletRequest.class);
// mock the returned value of request.getHeaderNames()
when(request.getHeaderNames()).thenReturn(headerNames);
System.out.println("demonstrate output of request.getHeaderNames()");
while (headerNames.hasMoreElements()) {
System.out.println("header name: " + headerNames.nextElement());
}
// mock the returned value of request.getHeader(String name)
doAnswer(new Answer<String>() {
@Override
public String answer(InvocationOnMock invocation) throws Throwable {
Object[] args = invocation.getArguments();
return headers.get((String) args[0]);
}
}).when(request).getHeader("Content-Type");
System.out.println("demonstrate output of request.getHeader(String name)");
String headerName = "Content-Type";
System.out.printf("header name: [%s] value: [%s]%n",
headerName, request.getHeader(headerName));
}
demonstrate output of request.getHeaderNames()
header name: null
header name: Content-Type
demonstrate output of request.getHeader(String name)
header name: [Content-Type] value: [text/html]
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