public void TryParseIntegerInterval_FailureResult_WhenInputStringIsNoValidInterval(string input)
{
var inputStream = GetStringStreamFor(input);
var parser = new PrimitiveParser(_alphabet);
var result = parser.TryParseIntegerInterval(inputStream);
Assert.IsFalse(result.IsSuccess);
inputStream.Received(0).Pop();
}
public void TryParseIntegerInterval_SuccessResult_WhenInputStringIsValidInterval(string input, int?expectedLower, int?expectedUpper, int expectedPopCalls)
{
var inputStream = GetStringStreamFor(input);
var parser = new PrimitiveParser(_alphabet);
var result = parser.TryParseIntegerInterval(inputStream);
Assert.IsTrue(result.IsSuccess);
Assert.AreEqual(expectedLower, result.Value.Start);
Assert.AreEqual(expectedUpper, result.Value.End);
inputStream.Received(expectedPopCalls).Pop();
}
public void TryParseIntegerInterval_ThrowsArgumentNullException_WhenStreamIsNll()
{
var parser = new PrimitiveParser(_alphabet);
Assert.Throws <ArgumentNullException>(() => parser.TryParseIntegerInterval(null));
}