// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

var assert = requireNative('assert');
var AssertTrue = assert.AssertTrue;
var AssertFalse = assert.AssertFalse;
var utils = require('utils');

function testSuperClass() {
  function SuperClassImpl() {}

  SuperClassImpl.prototype = {
    attrA: 'aSuper',
    attrB: 'bSuper',
    func: function() { return 'func'; },
    superFunc: function() { return 'superFunc'; }
  };

  function SubClassImpl() {
    SuperClassImpl.call(this);
  }

  SubClassImpl.prototype = {
    __proto__: SuperClassImpl.prototype,
    attrA: 'aSub',
    attrC: 'cSub',
    func: function() { return 'overridden'; },
    subFunc: function() { return 'subFunc'; }
  };

  var SuperClass = utils.expose('SuperClass',
                                SuperClassImpl,
                                { functions: ['func', 'superFunc'],
                                  properties: ['attrA', 'attrB'] });

  var SubClass = utils.expose('SubClass',
                              SubClassImpl,
                              { superclass: SuperClass,
                                functions: ['subFunc'],
                                properties: ['attrC'] });

  var supe = new SuperClass();
  AssertTrue(supe.attrA == 'aSuper');
  AssertTrue(supe.attrB == 'bSuper');
  AssertFalse('attrC' in supe);
  AssertTrue(supe.func() == 'func');
  AssertTrue('superFunc' in supe);
  AssertTrue(supe.superFunc() == 'superFunc');
  AssertFalse('subFunc' in supe);
  AssertTrue(supe instanceof SuperClass);

  var sub = new SubClass();
  AssertTrue(sub.attrA == 'aSub');
  AssertTrue(sub.attrB == 'bSuper');
  AssertTrue(sub.attrC == 'cSub');
  AssertTrue(sub.func() == 'overridden');
  AssertTrue(sub.superFunc() == 'superFunc');
  AssertTrue('subFunc' in sub);
  AssertTrue(sub.subFunc() == 'subFunc');
  AssertTrue(sub instanceof SuperClass);
  AssertTrue(sub instanceof SubClass);

  function SubSubClassImpl() {}
  SubSubClassImpl.prototype = Object.create(SubClassImpl.prototype);
  SubSubClassImpl.prototype.subSubFunc = function() { return 'subsub'; }

  var SubSubClass = utils.expose('SubSubClass',
                                 SubSubClassImpl,
                                 { superclass: SubClass,
                                   functions: ['subSubFunc'] });
  var subsub = new SubSubClass();
  AssertTrue(subsub.attrA == 'aSub');
  AssertTrue(subsub.attrB == 'bSuper');
  AssertTrue(subsub.attrC == 'cSub');
  AssertTrue(subsub.func() == 'overridden');
  AssertTrue(subsub.superFunc() == 'superFunc');
  AssertTrue(subsub.subFunc() == 'subFunc');
  AssertTrue(subsub.subSubFunc() == 'subsub');
  AssertTrue(subsub instanceof SuperClass);
  AssertTrue(subsub instanceof SubClass);
  AssertTrue(subsub instanceof SubSubClass);
}

function fakeApiFunction(shouldSucceed, numberOfResults, callback) {
  if (shouldSucceed) {
    var result = [];
    for (var i = 0; i < numberOfResults; i++) {
      result.push(i);
    }
    $Function.apply(callback, null, result);
    return;
  }
  chrome.runtime.lastError = 'error message';
  callback();
  chrome.runtime.lastError = null;
}

function testPromiseNoResult() {
  utils.promise(fakeApiFunction, true, 0).then(function(result) {
    AssertTrue(result === undefined);
  }).catch(function(e) {
    AssertFalse(True);
  });
}

function testPromiseOneResult() {
  utils.promise(fakeApiFunction, true, 1).then(function(result) {
    AssertTrue(result === 0);
  }).catch(function(e) {
    AssertFalse(True);
  });
}

function testPromiseTwoResults() {
  utils.promise(fakeApiFunction, true, 2).then(function(result) {
    AssertTrue(result.length == 2);
    AssertTrue(result[0] == 0);
    AssertTrue(result[1] == 1);
  }).catch(function(e) {
    AssertFalse(True);
  });
}

function testPromiseError() {
  utils.promise(fakeApiFunction, false, 0).then(function(result) {
    AssertFalse(True);
  }).catch(function(e) {
    AssertTrue(e.message == 'error message');
  });
}

exports.testSuperClass = testSuperClass;
exports.testPromiseNoResult = testPromiseNoResult;
exports.testPromiseOneResult = testPromiseOneResult;
exports.testPromiseTwoResults = testPromiseTwoResults;
exports.testPromiseError = testPromiseError;