defineSuite([
        'Widgets/SceneModePicker/SceneModePickerViewModel',
        'Core/Ellipsoid',
        'Scene/Globe',
        'Scene/SceneMode',
        'Specs/createScene'
    ], function(
        SceneModePickerViewModel,
        Ellipsoid,
        Globe,
        SceneMode,
        createScene) {
    'use strict';

    var scene;
    var ellipsoid = Ellipsoid.WGS84;
    beforeEach(function() {
        scene = createScene();
        var globe = new Globe(ellipsoid);
        scene.globe = globe;
    });

    afterEach(function() {
        scene.destroyForSpecs();
    });

    it('Can construct and destroy', function() {
        var viewModel = new SceneModePickerViewModel(scene, 1.0);
        expect(viewModel.scene).toBe(scene);
        expect(viewModel.duration).toEqual(1.0);
        expect(scene.morphStart.numberOfListeners).toEqual(1);
        expect(viewModel.isDestroyed()).toEqual(false);
        viewModel.destroy();
        expect(viewModel.isDestroyed()).toEqual(true);
        expect(scene.morphStart.numberOfListeners).toEqual(0);
    });

    it('dropDownVisible and toggleDropDown work', function() {
        var viewModel = new SceneModePickerViewModel(scene);

        expect(viewModel.dropDownVisible).toEqual(false);
        viewModel.toggleDropDown();
        expect(viewModel.dropDownVisible).toEqual(true);
        viewModel.dropDownVisible = false;
        expect(viewModel.dropDownVisible).toEqual(false);

        viewModel.destroy();
    });

    it('morphing closes the dropDown', function() {
        var viewModel = new SceneModePickerViewModel(scene);

        viewModel.dropDownVisible = true;
        viewModel.morphToColumbusView();
        expect(viewModel.dropDownVisible).toEqual(false);

        viewModel.dropDownVisible = true;
        viewModel.morphTo3D();
        expect(viewModel.dropDownVisible).toEqual(false);

        viewModel.dropDownVisible = true;
        viewModel.morphTo2D();
        expect(viewModel.dropDownVisible).toEqual(false);

        viewModel.destroy();
    });

    it('morphing calls correct transition', function() {
        var viewModel = new SceneModePickerViewModel(scene);

        expect(scene.mode).toEqual(SceneMode.SCENE3D);

        viewModel.morphToColumbusView();
        scene.completeMorph();
        expect(scene.mode).toEqual(SceneMode.COLUMBUS_VIEW);

        viewModel.morphTo3D();
        scene.completeMorph();
        expect(scene.mode).toEqual(SceneMode.SCENE3D);

        viewModel.morphTo2D();
        scene.completeMorph();
        expect(scene.mode).toEqual(SceneMode.SCENE2D);

        viewModel.destroy();
    });

    it('selectedTooltip changes on transition', function() {
        var viewModel = new SceneModePickerViewModel(scene);

        viewModel.morphToColumbusView();
        expect(viewModel.selectedTooltip).toEqual(viewModel.tooltipColumbusView);

        viewModel.morphTo3D();
        expect(viewModel.selectedTooltip).toEqual(viewModel.tooltip3D);

        viewModel.morphTo2D();
        expect(viewModel.selectedTooltip).toEqual(viewModel.tooltip2D);

        viewModel.destroy();
    });

    it('create throws with undefined scene', function() {
        expect(function() {
            return new SceneModePickerViewModel();
        }).toThrowDeveloperError();
    });
}, 'WebGL');