@Test // Uses of JMockit API: 3
public void returningElementsFromAList() {
final List<String> list = asList("a", "b", "c");
new Expectations() {
{
mockedList.get(anyInt);
result = list;
}
};
assertEquals("a", mockedList.get(0));
assertEquals("b", mockedList.get(1));
assertEquals("c", mockedList.get(2));
assertEquals("c", mockedList.get(3));
}
@Test // Uses of JMockit API: 8
public void useArgumentMatchers() {
new Expectations() {
{
// Using built-in matchers:
mockedList.get(anyInt);
result = "element";
// Using Hamcrest matchers:
mockedList.get(withArgThat(is(equalTo(5))));
result = new IllegalArgumentException();
minTimes = 0;
mockedList.contains(withArgThat(hasProperty("bytes")));
result = true;
mockedList.containsAll(withArgThat(hasSize(2)));
result = true;
}
};
assertEquals("element", mockedList.get(999));
assertTrue(mockedList.contains("abc"));
assertTrue(mockedList.containsAll(asList("a", "b")));
new Verifications() {
{
mockedList.get(anyInt);
}
};
}
@Test // Uses of JMockit API: 3
public void stubAndVerifyInvocationWithoutRepeatingItInExpectationAndVerificationBlocks() {
new Expectations() {
{
// Notice that this can't be done in Mockito, which requires the repetition of
// "mockedList.get(0);" in the verification phase.
mockedList.get(0);
result = "first";
times = 1;
}
};
assertEquals("first", mockedList.get(0));
}
@Test // Uses of JMockit API: 3
public void stubAndVerifyInvocation() {
// A recorded expectation is expected to occur at least once, by default.
new Expectations() {
{
mockedList.get(0);
result = "first";
}
};
assertEquals("first", mockedList.get(0));
// Note that verifying a stubbed invocation isn't "just redundant" if the test cares that the
// invocation occurs at least once. If this is the case, then it's not safe to expect the test
// to break without an explicit verification, because the method under test may never call the
// stubbed one, and that would be a bug that the test should detect.
}