jupyterlab/packages/mainmenu/test/file.spec.ts

// Copyright (c) Jupyter Development Team.
// Distributed under the terms of the Modified BSD License.

import { WidgetTracker } from '@jupyterlab/apputils';
import { FileMenu, IFileMenu } from '@jupyterlab/mainmenu';
import { CommandRegistry } from '@lumino/commands';
import { Widget } from '@lumino/widgets';
import { delegateExecute } from './util';

class Wodget extends Widget {
  state: string;
}

describe('@jupyterlab/mainmenu', () => {
  describe('FileMenu', () => {
    let commands: CommandRegistry;
    let menu: FileMenu;
    let tracker: WidgetTracker<Wodget>;
    let wodget: Wodget;

    beforeAll(() => {
      commands = new CommandRegistry();
    });

    beforeEach(() => {
      wodget = new Wodget();
      menu = new FileMenu({ commands });
      tracker = new WidgetTracker<Wodget>({ namespace: 'wodget' });
      void tracker.add(wodget);
    });

    afterEach(() => {
      menu.dispose();
      tracker.dispose();
      wodget.dispose();
    });

    describe('#constructor()', () => {
      it('should construct a new file menu', () => {
        expect(menu).toBeInstanceOf(FileMenu);
        // For localization this is now defined when on the mainmenu-extension.
        expect(menu.title.label).toBe('');
      });
    });

    describe('#newMenu', () => {
      it('should be a submenu for `New...` commands', () => {
        // For localization this is now defined when on the mainmenu-extension.
        expect(menu.newMenu.title.label).toBe('');
      });
    });

    describe('#cleaners', () => {
      it('should allow setting of an ICloseAndCleaner', () => {
        const cleaner: IFileMenu.ICloseAndCleaner<Wodget> = {
          tracker,
          closeAndCleanupLabel: (n: number) => 'closeAndCleanupLabel',
          closeAndCleanup: widget => {
            widget.state = 'clean';
            return Promise.resolve(void 0);
          }
        };
        menu.closeAndCleaners.add(cleaner);
        void delegateExecute(wodget, menu.closeAndCleaners, 'closeAndCleanup');
        expect(wodget.state).toBe('clean');
      });
    });

    describe('#consoleCreators', () => {
      it('should allow setting of an IConsoleCreator', () => {
        const creator: IFileMenu.IConsoleCreator<Wodget> = {
          tracker,
          createConsoleLabel: (n: number) => 'createConsoleLabel',
          createConsole: widget => {
            widget.state = 'create';
            return Promise.resolve(void 0);
          }
        };
        menu.consoleCreators.add(creator);
        void delegateExecute(wodget, menu.consoleCreators, 'createConsole');
        expect(wodget.state).toBe('create');
      });
    });
  });
});