clipboard.spec.js - mozsearch

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/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */

import { copyToTheClipboard } from "../clipboard";

let clipboardTestCopyString, expectedCopyEvent;

const addEventListener = jest.fn();

const execCommand = jest.fn();

const removeEventListener = jest.fn();

describe("copyToTheClipboard()", () => {

  beforeEach(() => {

    expectedCopyEvent = "copy";

    clipboardTestCopyString = "content intended for clipboard";

    global.document.addEventListener = addEventListener;

    global.document.execCommand = execCommand;

    global.document.removeEventListener = removeEventListener;

});

  it("listens for 'copy' event", () => {

    copyToTheClipboard(clipboardTestCopyString);

    expect(document.addEventListener).toHaveBeenCalledWith(

      expectedCopyEvent,

      expect.anything()

);

});

  it("calls document.execCommand() with 'copy' command", () => {

    copyToTheClipboard(clipboardTestCopyString);

    expect(execCommand).toHaveBeenCalledWith(expectedCopyEvent, false, null);

});

  it("removes event listener for 'copy' event", () => {

    copyToTheClipboard(clipboardTestCopyString);

    expect(document.removeEventListener).toHaveBeenCalledWith(

      expectedCopyEvent,

      expect.anything()

);

});

});