Add latest changes from gitlab-org/gitlab@13-10-stable-eev13.10.0-rc40

1 files changed, 96 insertions, 0 deletions

diff --git a/spec/frontend/single_file_diff_spec.js b/spec/frontend/single_file_diff_spec.js
new file mode 100644
index 00000000000..8718152655f
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+++ b/spec/frontend/single_file_diff_spec.js
@@ -0,0 +1,96 @@
+import MockAdapter from 'axios-mock-adapter';
+import $ from 'jquery';
+import { setHTMLFixture } from 'helpers/fixtures';
+import axios from '~/lib/utils/axios_utils';
+import SingleFileDiff from '~/single_file_diff';
+
+describe('SingleFileDiff', () => {
+  let mock = new MockAdapter(axios);
+  const blobDiffPath = '/mock-path';
+
+  beforeEach(() => {
+    mock = new MockAdapter(axios);
+    mock.onGet(blobDiffPath).replyOnce(200, { html: `<div class="diff-content">MOCKED</div>` });
+  });
+
+  afterEach(() => {
+    mock.restore();
+  });
+
+  it('loads diff via axios exactly once for collapsed diffs', async () => {
+    setHTMLFixture(`
+    <div class="diff-file">
+      <div class="js-file-title">
+        MOCK TITLE
+      </div>
+
+      <div class="diff-content">
+        <div class="diff-viewer" data-type="simple">
+          <div
+            class="nothing-here-block diff-collapsed"
+            data-diff-for-path="${blobDiffPath}"
+          >
+            MOCK CONTENT
+          </div>
+        </div>
+      </div>
+    </div>
+`);
+
+    // Collapsed is the default state
+    const diff = new SingleFileDiff(document.querySelector('.diff-file'));
+    expect(diff.isOpen).toBe(false);
+    expect(diff.content).toBeNull();
+    expect(diff.diffForPath).toEqual(blobDiffPath);
+
+    // Opening for the first time
+    await diff.toggleDiff($(document.querySelector('.js-file-title')));
+    expect(diff.isOpen).toBe(true);
+    expect(diff.content).not.toBeNull();
+
+    // Collapsing again
+    await diff.toggleDiff($(document.querySelector('.js-file-title')));
+    expect(diff.isOpen).toBe(false);
+    expect(diff.content).not.toBeNull();
+
+    mock.onGet(blobDiffPath).replyOnce(400, '');
+
+    // Opening again
+    await diff.toggleDiff($(document.querySelector('.js-file-title')));
+    expect(diff.isOpen).toBe(true);
+    expect(diff.content).not.toBeNull();
+
+    expect(mock.history.get.length).toBe(1);
+  });
+
+  it('does not load diffs via axios for already expanded diffs', async () => {
+    setHTMLFixture(`
+    <div class="diff-file">
+      <div class="js-file-title">
+        MOCK TITLE
+      </div>
+
+      <div class="diff-content">
+        EXPANDED MOCK CONTENT
+      </div>
+    </div>
+`);
+
+    // Opened is the default state
+    const diff = new SingleFileDiff(document.querySelector('.diff-file'));
+    expect(diff.isOpen).toBe(true);
+    expect(diff.content).not.toBeNull();
+    expect(diff.diffForPath).toEqual(undefined);
+
+    // Collapsing for the first time
+    await diff.toggleDiff($(document.querySelector('.js-file-title')));
+    expect(diff.isOpen).toBe(false);
+    expect(diff.content).not.toBeNull();
+
+    // Opening again
+    await diff.toggleDiff($(document.querySelector('.js-file-title')));
+    expect(diff.isOpen).toBe(true);
+
+    expect(mock.history.get.length).toBe(0);
+  });
+});