public void TrySetArgument_Returns_InvalidArgumentValue_When_Value_Expected_But_Not_Set()
{
const string argumentName = "someArg";
var testObject = new BoolArgument(_argument, _stringParser);
bool parsedValue;
_stringParser.Expect(s => s.TryParse(null, out parsedValue)).Return(false);
_argument.Expect(a => a.TrySetArgumentName(argumentName)).Return(SetArgumentDataResult.Success);
var actual = testObject.TrySetArgumentNameAndValue(argumentName, null);
Assert.That(actual, Is.EqualTo(SetArgumentDataResult.InvalidArgumentValue));
Assert.That(testObject.ParsedSuccessfully, Is.False);
Assert.That(testObject.ParsedArgumentValue, Is.EqualTo(default(bool)));
}