public void ToSingleStringBuilder_ReturnsEmptyString_WhenCharacterClassContainsOneCharacter()
{
var expression = new CharacterClassExpressionTest(_alphabet, _randomGenerator, _maxInverseLength);
expression.AddCharacters(new List <string> {
"U"
});
var result = expression.ToSingleStringBuilder().GenerateString();
Assert.AreEqual("U", result);
_randomGenerator.Received(0).GetNextInteger(Arg.Any <int>(), Arg.Any <int>());
}
public void ToSingleStringBuilder_ReturnsL_WhenRandomGeneratorReturns2AndSecondLetterInListIsL()
{
_randomGenerator.GetNextInteger(Arg.Any <int>(), Arg.Any <int>()).Returns(1);
var expression = new CharacterClassExpressionTest(_alphabet, _randomGenerator, _maxInverseLength);
expression.AddCharacters(new List <string> {
"U", "L"
});
var result = expression.ToSingleStringBuilder().GenerateString();
Assert.AreEqual("L", result);
_randomGenerator.Received(1).GetNextInteger(Arg.Any <int>(), Arg.Any <int>());
}