private void TokenizeInstanceClassVariables1() {
AssertTokenizer t = NewAssertTokenizer();
t.Load("@").Read(Tokens.At);
t.Load("@@").Read(Tokens.At);
t.Load("@1").Read(Tokens.At).Expect(Errors.InvalidInstanceVariableName);
t.Load("@@1").Read(Tokens.At).Expect(Errors.InvalidClassVariableName);
t.Load("@_").ReadSymbol(Tokens.InstanceVariable, "@_");
t.Load("@@_").ReadSymbol(Tokens.ClassVariable, "@@_");
t.Load("@aA1_").ReadSymbol(Tokens.InstanceVariable, "@aA1_");
t.Load("@@aA1_").ReadSymbol(Tokens.ClassVariable, "@@aA1_");
t.Expect();
}