1 files changed, 66 insertions, 0 deletions
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']);
+    });
+  });
+});