var test = require("tap").test;
var chain = require('../../');
var produce = require('../produce.js');

Error.stackTraceLimit = Infinity;

test("stack extend part", function (t) {
  var modify = function (text) {
    return function (error, frames) {
      if (error.test) {
        frames.push(text);
      }

      return frames;
    };
  };

  t.test("no extend modifier attached", function (t) {
    var error = new Error();
        error.test = error;

    var original = chain.originalCallSite(error).length;
    var mutated = chain.mutatedCallSite(error).length;
    t.strictEqual(mutated, original);

    t.end();
  });

  t.test("attach modifier", function (t) {
    var error = new Error();
        error.test = error;

    var wonderLand = modify("wonder land");

    chain.extend.attach(wonderLand);

    var original = chain.originalCallSite(error).length;
    var mutated = chain.mutatedCallSite(error).length;
    t.strictEqual(mutated, original + 1);

    chain.extend.deattach(wonderLand);

    t.end();
  });

  t.end();
});