public void TestIgnoreCaseTransformer()
{
CharSetSolver solver = new CharSetSolver();
int t = System.Environment.TickCount;
IgnoreCaseTransformer ic = new IgnoreCaseTransformer(solver);
//simple test first:
BDD a2c = solver.MkRangeConstraint('a', 'c');
BDD a2cA2C = ic.Apply(a2c);
BDD a2cA2C_expected = a2c.Or(solver.MkRangeConstraint('A', 'C'));
Assert.AreEqual<BDD>(a2cA2C, a2cA2C_expected);
//
//comprehensive test:
//
//test that the whole array is correct:
// Microsoft.Automata.Internal.Generated.IgnoreCaseRelation.ignorecase
// (generated by:)
//
// IgnoreCaseRelationGenerator.Generate(
// "Microsoft.Automata.Internal.Generated",
// "IgnoreCaseRelation",
// @"C:\GitHub\AutomataDotNet\Automata\src\Automata\Internal\Generated");
//
//test that all characters in it are truly equivalent wrt the igore-case option of regex
//
for (int i = 0; i <= 0xFFFF; i++)
{
char c = (char)i;
if (ic.IsInDomain(c))
{
BDD cC = ic.Apply(solver.MkCharConstraint(c));
foreach (char d in solver.GenerateAllCharacters(cC))
{
Assert.IsTrue(Regex.IsMatch(d.ToString(), "^(?i:" + StringUtility.Escape(c) + ")$"));
}
}
}
//
//second, test that all characters outside the domain are only equivalent (up-to-case) to themsevles
//
// for some reson this does not succeed, ??? some characters, e.g. '\xF7', are
// equivalent to some other characters in the below test, but not when tested individually
// there is a bug in Regex.IsMatch with ignore-case combined with intervals
//
//for (int i = 2; i <= 0xFFFD; i++)
//{
// char c = (char)i;
// if (!ic.IsInDomain(c))
// {
// if (Regex.IsMatch(c.ToString(), @"^([\0-" + StringUtility.Escape((char)(i - 1)) + StringUtility.Escape((char)(i + 1)) + @"-\uFFFF])$", RegexOptions.IgnoreCase))
// Console.WriteLine(StringUtility.Escape(c));
// }
//}
}
