1 files changed, 80 insertions, 0 deletions
diff --git a/spec/frontend/lib/utils/global_alerts_spec.js b/spec/frontend/lib/utils/global_alerts_spec.js
new file mode 100644
index 00000000000..97fe427c281
--- /dev/null
+++ b/spec/frontend/lib/utils/global_alerts_spec.js
@@ -0,0 +1,80 @@
+import {
+  getGlobalAlerts,
+  setGlobalAlerts,
+  removeGlobalAlertById,
+  GLOBAL_ALERTS_SESSION_STORAGE_KEY,
+} from '~/lib/utils/global_alerts';
+
+describe('global alerts utils', () => {
+  describe('getGlobalAlerts', () => {
+    describe('when there are alerts', () => {
+      beforeEach(() => {
+        jest
+          .spyOn(Storage.prototype, 'getItem')
+          .mockImplementation(() => '[{"id":"foo","variant":"danger","message":"Foo"}]');
+      });
+
+      it('returns alerts from session storage', () => {
+        expect(getGlobalAlerts()).toEqual([{ id: 'foo', variant: 'danger', message: 'Foo' }]);
+      });
+    });
+
+    describe('when there are no alerts', () => {
+      beforeEach(() => {
+        jest.spyOn(Storage.prototype, 'getItem').mockImplementation(() => null);
+      });
+
+      it('returns empty array', () => {
+        expect(getGlobalAlerts()).toEqual([]);
+      });
+    });
+  });
+});
+
+describe('setGlobalAlerts', () => {
+  it('sets alerts in session storage', () => {
+    const setItemSpy = jest.spyOn(Storage.prototype, 'setItem').mockImplementation(() => {});
+
+    setGlobalAlerts([
+      {
+        id: 'foo',
+        variant: 'danger',
+        message: 'Foo',
+      },
+      {
+        id: 'bar',
+        variant: 'success',
+        message: 'Bar',
+        persistOnPages: ['dashboard:groups:index'],
+        dismissible: false,
+      },
+    ]);
+
+    expect(setItemSpy).toHaveBeenCalledWith(
+      GLOBAL_ALERTS_SESSION_STORAGE_KEY,
+      '[{"dismissible":true,"persistOnPages":[],"id":"foo","variant":"danger","message":"Foo"},{"dismissible":false,"persistOnPages":["dashboard:groups:index"],"id":"bar","variant":"success","message":"Bar"}]',
+    );
+  });
+});
+
+describe('removeGlobalAlertById', () => {
+  beforeEach(() => {
+    jest
+      .spyOn(Storage.prototype, 'getItem')
+      .mockImplementation(
+        () =>
+          '[{"id":"foo","variant":"success","message":"Foo"},{"id":"bar","variant":"danger","message":"Bar"}]',
+      );
+  });
+
+  it('removes alert', () => {
+    const setItemSpy = jest.spyOn(Storage.prototype, 'setItem').mockImplementation(() => {});
+
+    removeGlobalAlertById('bar');
+
+    expect(setItemSpy).toHaveBeenCalledWith(
+      GLOBAL_ALERTS_SESSION_STORAGE_KEY,
+      '[{"id":"foo","variant":"success","message":"Foo"}]',
+    );
+  });
+});