public void GetBracketsAsSeparators()
{
Lexer lexer = new Lexer("[]");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Separator, token.Type);
Assert.AreEqual("[", token.Value);
token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Separator, token.Type);
Assert.AreEqual("]", token.Value);
Assert.IsNull(lexer.NextToken());
}