2 files changed, 110 insertions, 0 deletions
diff --git a/spec/frontend/behaviors/load_startup_css_spec.js b/spec/frontend/behaviors/load_startup_css_spec.js
new file mode 100644
index 00000000000..81222ac5aaa
--- /dev/null
+++ b/spec/frontend/behaviors/load_startup_css_spec.js
@@ -0,0 +1,44 @@
+import { setHTMLFixture } from 'helpers/fixtures';
+import { loadStartupCSS } from '~/behaviors/load_startup_css';
+
+describe('behaviors/load_startup_css', () => {
+  let loadListener;
+
+  const setupListeners = () => {
+    document
+      .querySelectorAll('link')
+      .forEach(x => x.addEventListener('load', () => loadListener(x)));
+  };
+
+  beforeEach(() => {
+    loadListener = jest.fn();
+
+    setHTMLFixture(`
+      <meta charset="utf-8" />
+      <link media="print" src="./lorem-print.css" />
+      <link media="print" src="./ipsum-print.css" />
+      <link media="all" src="./dolar-all.css" />
+    `);
+
+    setupListeners();
+
+    loadStartupCSS();
+  });
+
+  it('does nothing at first', () => {
+    expect(loadListener).not.toHaveBeenCalled();
+  });
+
+  describe('on window load', () => {
+    beforeEach(() => {
+      window.dispatchEvent(new Event('load'));
+    });
+
+    it('dispatches load to the print links', () => {
+      expect(loadListener.mock.calls.map(([el]) => el.getAttribute('src'))).toEqual([
+        './lorem-print.css',
+        './ipsum-print.css',
+      ]);
+    });
+  });
+});
diff --git a/spec/frontend/behaviors/shortcuts/keybindings_spec.js b/spec/frontend/behaviors/shortcuts/keybindings_spec.js
new file mode 100644
index 00000000000..23fea79f828
--- /dev/null
+++ b/spec/frontend/behaviors/shortcuts/keybindings_spec.js
@@ -0,0 +1,66 @@
+import { useLocalStorageSpy } from 'helpers/local_storage_helper';
+
+describe('~/behaviors/shortcuts/keybindings.js', () => {
+  let keysFor;
+  let TOGGLE_PERFORMANCE_BAR;
+  let LOCAL_STORAGE_KEY;
+
+  beforeAll(() => {
+    useLocalStorageSpy();
+  });
+
+  const setupCustomizations = async customizationsAsString => {
+    localStorage.clear();
+
+    if (customizationsAsString) {
+      localStorage.setItem(LOCAL_STORAGE_KEY, customizationsAsString);
+    }
+
+    jest.resetModules();
+    ({ keysFor, TOGGLE_PERFORMANCE_BAR, LOCAL_STORAGE_KEY } = await import(
+      '~/behaviors/shortcuts/keybindings'
+    ));
+  };
+
+  describe('when a command has not been customized', () => {
+    beforeEach(async () => {
+      await setupCustomizations('{}');
+    });
+
+    it('returns the default keybinding for the command', () => {
+      expect(keysFor(TOGGLE_PERFORMANCE_BAR)).toEqual(['p b']);
+    });
+  });
+
+  describe('when a command has been customized', () => {
+    const customization = ['p b a r'];
+
+    beforeEach(async () => {
+      await setupCustomizations(JSON.stringify({ [TOGGLE_PERFORMANCE_BAR]: customization }));
+    });
+
+    it('returns the default keybinding for the command', () => {
+      expect(keysFor(TOGGLE_PERFORMANCE_BAR)).toEqual(customization);
+    });
+  });
+
+  describe("when the localStorage entry isn't valid JSON", () => {
+    beforeEach(async () => {
+      await setupCustomizations('{');
+    });
+
+    it('returns the default keybinding for the command', () => {
+      expect(keysFor(TOGGLE_PERFORMANCE_BAR)).toEqual(['p b']);
+    });
+  });
+
+  describe(`when localStorage doesn't contain the ${LOCAL_STORAGE_KEY} key`, () => {
+    beforeEach(async () => {
+      await setupCustomizations();
+    });
+
+    it('returns the default keybinding for the command', () => {
+      expect(keysFor(TOGGLE_PERFORMANCE_BAR)).toEqual(['p b']);
+    });
+  });
+});