var TabPaneCollection = require('builder/components/tab-pane/tab-pane-collection');
var Backbone = require('backbone');
var _ = require('underscore');

describe('components/tab-pane-collection', function () {
  beforeEach(function () {
    this.collection = new TabPaneCollection();
    this.model1 = new Backbone.Model({
      name: 'hello'
    });
    this.model2 = new Backbone.Model({
      name: 'world'
    });
    this.collection.reset([this.model1, this.model2]);
  });

  it('should select one item by default', function () {
    var isSelected = this.collection.find(function (model) {
      return model.get('selected');
    });
    expect(isSelected).toBe(this.collection.at(0));
  });

  it('should select item', function () {
    this.collection.select('name', 'hello');
    expect(this.collection.getSelected()).toBe(this.model1);
  });

  it('should trigger reset event', function () {
    spyOn(TabPaneCollection.prototype, 'trigger').and.callThrough();

    this.collection = new TabPaneCollection([new Backbone.Model(), new Backbone.Model()]);
    var calls = TabPaneCollection.prototype.trigger.calls;
    var resetWasCalled = _.find(calls.allArgs(), function (e) { return e[0] === 'reset'; });

    expect(TabPaneCollection.prototype.trigger).toHaveBeenCalled();
    expect(resetWasCalled).toBeTruthy();
    expect(calls.count()).toBe(8);

    // add x 2
    // update
    // change x 2
    // change:selected x 2: due to the `selected` attribute is undefined by default
    // reset

    TabPaneCollection.prototype.trigger.calls.reset();
  });

  describe('.getDefault', function () {
    it('should return selected tab', function () {
      var defaultTab = new Backbone.Model({
        name: 'default'
      });

      var collection = new TabPaneCollection([defaultTab]);

      expect(collection.getDefault()).toBe(this.defaultTab);
    });
  });

  describe('.isDisabledTab', function () {
    it('should return true if tab is disabled', function () {
      var disabledTab = new Backbone.Model({
        name: 'default',
        disabled: true
      });

      var collection = new TabPaneCollection([disabledTab], { disabledTabs: [disabledTab] });

      expect(collection.isDisabledTab('default')).toBe(true);
    });

    it('should return false if tab is not disabled', function () {
      var nonDisabledTab = new Backbone.Model({
        name: 'default',
        disabled: false
      });

      var collection = new TabPaneCollection([nonDisabledTab]);

      expect(collection.isDisabledTab('default')).toBe(false);
    });
  });
});