text: var compiler = require('../lib/compiler.js');
  
  exports.test_clc_sngl = function (test) {
      var tokens = compiler.lexical('CLC');
      test.equal(1, tokens.length);
      test.equal('T_INSTRUCTION', tokens[0].type);
      var ast = compiler.syntax(tokens);
      test.equal(1, ast.length);
      test.equal('S_IMPLIED', ast[0].type);
      var code = compiler.semantic(ast);
      test.deepEqual(code, [0x18]);
      test.done();
  };
  