Mockito's Matcher vs Hamcrest Matcher?

That means that you can only use Hamcrest matchers when a Matcher<?> object is expected in the signature - typically, in assertThat calls. When setting up expectations or verifications where you are calling methods of the mock object, you use the Mockito matchers.

例如(为了清楚起见，使用完全限定的名称):

For example (with fully qualified names for clarity):

@Test
public void testGetDelegatedBarByIndex() {
    Foo mockFoo = mock(Foo.class);
    // inject our mock
    objectUnderTest.setFoo(mockFoo);
    Bar mockBar = mock(Bar.class);
    when(mockFoo.getBarByIndex(org.mockito.Matchers.any(Integer.class))).
        thenReturn(mockBar);

    Bar actualBar = objectUnderTest.getDelegatedBarByIndex(1);

    assertThat(actualBar, org.hamcrest.Matchers.any(Bar.class));
    verify(mockFoo).getBarByIndex(org.mockito.Matchers.any(Integer.class));
}

如果您想在需要 Mockito 匹配器的上下文中使用 Hamcrest 匹配器，您可以使用 org.mockito.Matchers.argThat 匹配器.它将 Hamcrest 匹配器转换为 Mockito 匹配器.因此，假设您想以某种精度(但不多)匹配双精度值.在这种情况下，您可以这样做:

If you want to use a Hamcrest matcher in a context that requires a Mockito matcher, you can use the org.mockito.Matchers.argThat matcher. It converts a Hamcrest matcher into a Mockito matcher. So, say you wanted to match a double value with some precision (but not much). In that case, you could do:

when(mockFoo.getBarByDouble(argThat(is(closeTo(1.0, 0.001))))).
    thenReturn(mockBar);

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