clr-angular-static-fix/utils/conditional/if-open.service.spec.ts

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/*
 * Copyright (c) 2016-2018 VMware, Inc. All Rights Reserved.
 * This software is released under MIT license.
 * The full license information can be found in LICENSE in the root directory of this project.
 */

import { IfOpenService } from './if-open.service';

export default function(): void {
  describe('IfOpenService provider', function() {
    let ifOpenService: IfOpenService;

    beforeEach(function() {
      ifOpenService = new IfOpenService();
    });

    describe('Typescript API', function() {
      it('provides an observable for changes', function() {
        let nbChanges: number = 0;
        let currentChange: boolean;

        // Subscribe first
        ifOpenService.openChange.subscribe((change: boolean) => {
          nbChanges++;
          currentChange = change;
        });

        // Initial state expectations
        expect(ifOpenService).toBeDefined();
        expect(nbChanges).toEqual(0);
        expect(currentChange).not.toBeDefined();

        // First change
        ifOpenService.open = true;
        expect(nbChanges).toEqual(1);
        expect(currentChange).toEqual(true);

        // Second change
        ifOpenService.open = false;
        expect(nbChanges).toEqual(2);
        expect(currentChange).toEqual(false);
      });

      it('sets the current open value in the service', function() {
        expect(ifOpenService.open).not.toBeDefined();
        const test: boolean = false;
        ifOpenService.open = test;
        expect(ifOpenService.open).toEqual(test);
      });

      it('gets the current open value of the service', function() {
        const init: boolean = false;
        let test: boolean;
        ifOpenService.open = init;
        expect(test).toBeUndefined();
        test = ifOpenService.open;
        expect(test).toEqual(init);
      });
    });
  });
}