private static void AssertExpectedLexerRulesReturnedFromInitializedParseEngine(IGrammar grammar, int expectedCount)
{
var preComputedGrammar = new PreComputedGrammar(grammar);
var parseEngine = new DeterministicParseEngine(preComputedGrammar);
var lexerRules = parseEngine.GetExpectedLexerRules();
Assert.AreEqual(
expectedCount,
lexerRules.Count, $"Expected {expectedCount} lexerRule, Found {lexerRules.Count}");
}