public void When_projecting_a_failure_result()
{
var input = new MockInput<int>();
var childParser = new MockFailureParser<int, double>();
var parser = new ProjectionParser<int, double, decimal>(childParser, d => (decimal) d + 3.0m);
var actualResult = parser.Parse(input);
ParseResultAssert.IsFailure(actualResult);
Assert.AreEqual(input, actualResult.FirstInput);
}
public void Cast_called_on_a_failed_result()
{
var firstInput = new MockInput<int>();
var remainingInput = new MockInput<int>();
var mockParser = new MockFailureParser<int, double>();
var originalResult = ParseResult.Failure<int, double>(firstInput, mockParser);
var actualResult = originalResult.Cast<int, double, decimal>();
Assert.AreEqual(originalResult.FirstInput, actualResult.FirstInput);
Assert.AreEqual(originalResult.RemainingInput, actualResult.RemainingInput);
ParseResultAssert.IsFailure(actualResult);
}
public void IfFailure_called_on_a_failed_result()
{
var firstInput = new MockInput<int>();
var remainingInput = new MockInput<int>();
var expectedResult = new MockParseResult<int, double>();
var mockParser = new MockFailureParser<int, double>();
var originalResult = ParseResult.Failure<int, double>(firstInput, mockParser);
var actualResult = originalResult.IfFailure(
successfulResult =>
{
Assert.AreEqual(originalResult, successfulResult);
return expectedResult;
}
);
Assert.AreEqual(expectedResult, actualResult);
}
public void IfSuccess_called_on_a_failed_result()
{
var firstInput = new MockInput<int>();
var mockParser = new MockFailureParser<int, double>();
var originalResult = ParseResult.Failure<int, double>(firstInput, mockParser);
var actualResult = originalResult.IfSuccess(
successfulResult =>
{
Assert.Fail("IfSuccess called the action, somehow");
return originalResult;
}
);
Assert.AreEqual(originalResult.FirstInput, actualResult.FirstInput);
Assert.AreEqual(originalResult.RemainingInput, actualResult.RemainingInput);
ParseResultAssert.IsFailure(actualResult);
}