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Copy pathOperationResultTest.java
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63 lines (49 loc) · 1.98 KB
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packagevalidation;
importorg.junit.Test;
importorg.junit.runner.RunWith;
importorg.mockito.Mock;
importorg.mockito.junit.MockitoJUnitRunner;
importjava.time.LocalDateTime;
importjava.util.Optional;
importstaticorg.junit.Assert.assertFalse;
importstaticorg.mockito.ArgumentMatchers.any;
importstaticorg.mockito.ArgumentMatchers.anyBoolean;
importstaticorg.mockito.ArgumentMatchers.refEq;
importstaticorg.mockito.Mockito.when;
@RunWith(MockitoJUnitRunner.class)
publicclassOperationResultTest {
@Mock
privateValidator<LocalDateTime> timeValidator;
@Test
publicvoidtestChainFunctions() {
when(timeValidator.validate(any(LocalDateTime.class))).thenReturn(Optional.empty());
OperationResult<String> chain =
newOperationResult<String>()
.flatMap(this::verifyTime)
.flatMap(this::verifyName)
.onSuccess(() -> System.out.println("success"));
assertFalse(chain.hasError());
}
@Test(expected = IllegalStateException.class)
publicvoidtestThrowException() {
when(timeValidator.validate(any(LocalDateTime.class)))
.thenReturn(Optional.of(newValidationError() {
@Override
publicStringgetErrorMessage() {
return"Some time validation error";
}
@Override
publicStringgetCode() {
return"0x111";
}
}));
OperationResult.<LocalDateTime, ValidationError>of(timeValidator.validate(LocalDateTime.now()))
.interruptOnFailure(error -> newIllegalStateException(error.getErrorMessage()));
}
privateOperationResult<String> verifyTime() {
returnOperationResult.of(timeValidator.validate(LocalDateTime.now()));
}
privateOperationResult<String> verifyName() {
returnOperationResult.success("James");
}
}