@Test
public void should_use_AssertionErrorFactory_when_overriding_error_message_is_not_specified() {
MyOwnAssertionError expectedError = new MyOwnAssertionError("[description] my message");
Description description = new TestDescription("description");
info.description(description);
when(errorFactory.newAssertionError(description)).thenReturn(expectedError);
AssertionError failure = failures.failure(info, errorFactory);
assertSame(expectedError, failure);
}
/**
* Creates a <code>{@link AssertionError}</code> following this pattern:
*
* <ol>
* <li>creates a <code>{@link AssertionError}</code> using <code>
* {@link AssertionInfo#overridingErrorMessage()}</code> as the error message if such value
* is not {@code null}, or
* <li>uses the given <code>{@link AssertionErrorFactory}</code> to create an <code>
* {@link AssertionError}</code>, prepending the value of <code>
* {@link AssertionInfo#description()}</code> to the error message
* </ol>
*
* @param info contains information about the failed assertion.
* @param factory knows how to create {@code AssertionError}s.
* @return the created <code>{@link AssertionError}</code>.
*/
public AssertionError failure(AssertionInfo info, AssertionErrorFactory factory) {
AssertionError error = failureIfErrorMessageIsOverridden(info);
if (error != null) return error;
printThreadDumpIfNeeded();
return factory.newAssertionError(info.description(), info.representation());
}
