'use strict';

var btnHandler = require('../../../src/js/util/backbutton-handler');

describe('Backbutton Handler', function() {
    chai.config.includeStack = true;

    var scope, event;

    beforeEach(function() {
        scope = {
            state: {},
            $apply: function() {}
        };

        event = new CustomEvent('backbutton');

        // this is a precondition for the test. throw an exception
        // if this would produce side effects
        expect(navigator.app).to.not.exist;
        navigator.app = {};

        btnHandler.attachHandler(scope);
        btnHandler.start();
    });

    afterEach(function() {
        btnHandler.stop();
        delete navigator.app;
    });

    it('should close lightbox', function() {
        scope.state.lightbox = 'asd';
        document.dispatchEvent(event);
        expect(scope.state.lightbox).to.be.undefined;
    });

    it('should close reader', function() {
        scope.state.read = {
            open: true,
            toggle: function(state) {
                scope.state.read.open = state;
            }
        };
        document.dispatchEvent(event);
        expect(scope.state.read.open).to.be.false;
    });

    it('should close navigation', function() {
        scope.state.nav = {
            open: true,
            toggle: function(state) {
                scope.state.nav.open = state;
            }
        };
        document.dispatchEvent(event);
        expect(scope.state.nav.open).to.be.false;
    });

    it('should close app', function(done) {
        navigator.app.exitApp = done;
        document.dispatchEvent(event);
    });
});