private void ConstructAndDeriveRegexp(string input, string expectedResult, string removedLetter)
{
// Arrange
regexp = new RegularExpression(input, true);
Console.Out.WriteLine("{0} optimized into {1}", input, regexp);
if (expectedResult == null)
{
expectedDerivation = null;
}
else
{
expectedDerivation = new RegularExpression(expectedResult, true);
}
Console.Out.WriteLine("{0} optimized into {1}", expectedResult, expectedDerivation);
// Act
derivation = regexp.Derive(removedLetter);
// Assert
if (expectedDerivation == null)
{
Assert.AreEqual(null, derivation);
}
else
{
Assert.AreEqual(true, expectedDerivation.Equals(derivation));
}
}