Ported existing spec from karma to jest

https://gitlab.com/gitlab-org/gitlab/-/merge_requests/25934

Ported existing spec from karma to jest
https://gitlab.com/gitlab-org/gitlab/-/merge_requests/25934
572ffacd · Roman Kuba · Paul Slaughter · 80f584a7 · 572ffacd
Commit 572ffacd authored Feb 28, 2020 by Roman Kuba Committed by Paul Slaughter Feb 28, 2020
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Showing with 47 additions and 37 deletions

spec/frontend/behaviors/quick_submit_spec.js spec/frontend/behaviors/quick_submit_spec.js +47 -37

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--- a/spec/javascripts/behaviors/quick_submit_spec.js
+++ b/spec/javascripts/behaviors/quick_submit_spec.js
 import $ from 'jquery';
 import '~/behaviors/quick_submit';

-describe('Quick Submit behavior', function() {
+describe('Quick Submit behavior', () => {
+  let testContext;
+
  const keydownEvent = (options = { keyCode: 13, metaKey: true }) => $.Event('keydown', options);

  preloadFixtures('snippets/show.html');

  beforeEach(() => {
    loadFixtures('snippets/show.html');
+
+    testContext = {};
+
+    testContext.spies = {
+      submit: jest.fn(),
+    };
+
    $('form').submit(e => {
      // Prevent a form submit from moving us off the testing page
      e.preventDefault();
+      // Explicitly call the spie to know this function get's not called
+      testContext.spies.submit();
    });
-    this.spies = {
-      submit: spyOnEvent('form', 'submit'),
-    };
-
-    this.textarea = $('.js-quick-submit textarea').first();
-  });
-
-  afterEach(() => {
-    // Undo what we did to the shared <body>
-    $('body').removeAttr('data-page');
+    testContext.textarea = $('.js-quick-submit textarea').first();
  });

  it('does not respond to other keyCodes', () => {
-    this.textarea.trigger(
+    testContext.textarea.trigger(
      keydownEvent({
        keyCode: 32,
      }),
    );

-    expect(this.spies.submit).not.toHaveBeenTriggered();
+    expect(testContext.spies.submit).not.toHaveBeenCalled();
  });

  it('does not respond to Enter alone', () => {
-    this.textarea.trigger(
+    testContext.textarea.trigger(
      keydownEvent({
        ctrlKey: false,
        metaKey: false,
      }),
    );

-    expect(this.spies.submit).not.toHaveBeenTriggered();
+    expect(testContext.spies.submit).not.toHaveBeenCalled();
  });

  it('does not respond to repeated events', () => {
-    this.textarea.trigger(
+    testContext.textarea.trigger(
      keydownEvent({
        repeat: true,
      }),
    );

-    expect(this.spies.submit).not.toHaveBeenTriggered();
+    expect(testContext.spies.submit).not.toHaveBeenCalled();
  });

  it('disables input of type submit', () => {
    const submitButton = $('.js-quick-submit input[type=submit]');
-    this.textarea.trigger(keydownEvent());
+    testContext.textarea.trigger(keydownEvent());

    expect(submitButton).toBeDisabled();
  });

  it('disables button of type submit', () => {
    const submitButton = $('.js-quick-submit input[type=submit]');
-    this.textarea.trigger(keydownEvent());
+    testContext.textarea.trigger(keydownEvent());

    expect(submitButton).toBeDisabled();
  });
@@ -73,71 +75,79 @@ describe('Quick Submit behavior', function() {
    const existingSubmit = $('.js-quick-submit input[type=submit]');
    // Add an extra submit button
    const newSubmit = $('<button type="submit">Submit it</button>');
-    newSubmit.insertAfter(this.textarea);
+    newSubmit.insertAfter(testContext.textarea);

-    const oldClick = spyOnEvent(existingSubmit, 'click');
-    const newClick = spyOnEvent(newSubmit, 'click');
+    const spies = {
+      oldClickSpy: jest.fn(),
+      newClickSpy: jest.fn(),
+    };
+    existingSubmit.on('click', () => {
+      spies.oldClickSpy();
+    });
+    newSubmit.on('click', () => {
+      spies.newClickSpy();
+    });

-    this.textarea.trigger(keydownEvent());
+    testContext.textarea.trigger(keydownEvent());

-    expect(oldClick).not.toHaveBeenTriggered();
-    expect(newClick).toHaveBeenTriggered();
+    expect(spies.oldClickSpy).not.toHaveBeenCalled();
+    expect(spies.newClickSpy).toHaveBeenCalled();
  });
  // We cannot stub `navigator.userAgent` for CI's `rake karma` task, so we'll
  // only run the tests that apply to the current platform
  if (navigator.userAgent.match(/Macintosh/)) {
    describe('In Macintosh', () => {
      it('responds to Meta+Enter', () => {
-        this.textarea.trigger(keydownEvent());
+        testContext.textarea.trigger(keydownEvent());

-        expect(this.spies.submit).toHaveBeenTriggered();
+        expect(testContext.spies.submit).toHaveBeenCalled();
      });

      it('excludes other modifier keys', () => {
-        this.textarea.trigger(
+        testContext.textarea.trigger(
          keydownEvent({
            altKey: true,
          }),
        );
-        this.textarea.trigger(
+        testContext.textarea.trigger(
          keydownEvent({
            ctrlKey: true,
          }),
        );
-        this.textarea.trigger(
+        testContext.textarea.trigger(
          keydownEvent({
            shiftKey: true,
          }),
        );

-        expect(this.spies.submit).not.toHaveBeenTriggered();
+        expect(testContext.spies.submit).not.toHaveBeenCalled();
      });
    });
  } else {
    it('responds to Ctrl+Enter', () => {
-      this.textarea.trigger(keydownEvent());
+      testContext.textarea.trigger(keydownEvent());

-      expect(this.spies.submit).toHaveBeenTriggered();
+      expect(testContext.spies.submit).toHaveBeenCalled();
    });

    it('excludes other modifier keys', () => {
-      this.textarea.trigger(
+      testContext.textarea.trigger(
        keydownEvent({
          altKey: true,
        }),
      );
-      this.textarea.trigger(
+      testContext.textarea.trigger(
        keydownEvent({
          metaKey: true,
        }),
      );
-      this.textarea.trigger(
+      testContext.textarea.trigger(
        keydownEvent({
          shiftKey: true,
        }),
      );

-      expect(this.spies.submit).not.toHaveBeenTriggered();
+      expect(testContext.spies.submit).not.toHaveBeenCalled();
    });
  }
 });