public void GetIntersection_ReturnsEmptyString_WhenCharacterClassContainsFfAndIsIntersectedWithNull()
{
var charClassFf = new CharacterClassExpression(_alphabet, _randomGenerator, _maxInverseLength);
charClassFf.AddCharacters(new List <string> {
"F", "f"
});
var result1 = charClassFf.GetIntersection(null).ToStringBuilder().GenerateString();
Assert.AreEqual(string.Empty, result1);
}
public void GetIntersection_ReturnsEmptyString_WhenIntersectedCharacterClassesContainDifferentCharacters()
{
var charClassFr = new CharacterClassExpression(_alphabet, _randomGenerator, _maxInverseLength);
charClassFr.AddCharacters(new List <string> {
"F", "r"
});
var charClassJa = new CharacterClassExpression(_alphabet, _randomGenerator, _maxInverseLength);
charClassJa.AddCharacters(new List <string> {
"J", "a"
});
var result = charClassJa.GetIntersection(charClassFr).ToStringBuilder().GenerateString();
Assert.AreEqual(string.Empty, result);
}
public void GetIntersection_ReturnsF_WhenCharacterClassContainsFfAndIsIntersectedWithF()
{
var charClassFf = new CharacterClassExpression(_alphabet, _randomGenerator, _maxInverseLength);
charClassFf.AddCharacters(new List <string> {
"F", "f"
});
var charClassF = new CharacterClassExpression(_alphabet, _randomGenerator, _maxInverseLength);
charClassF.AddCharacters(new List <string> {
"F"
});
var result1 = charClassFf.GetIntersection(charClassF).ToStringBuilder().GenerateString();
var result2 = charClassF.GetIntersection(charClassFf).ToStringBuilder().GenerateString();
Assert.AreEqual("F", result1, "charClassFf.GetIntersection(charClassF)");
Assert.AreEqual("F", result2, "charClassF.GetIntersection(charClassFf)");
}