1 files changed, 42 insertions, 0 deletions
diff --git a/spec/frontend/pipeline_editor/components/ui/confirm_unsaved_changes_dialog_spec.js b/spec/frontend/pipeline_editor/components/ui/confirm_unsaved_changes_dialog_spec.js
new file mode 100644
index 00000000000..44fda2812d8
--- /dev/null
+++ b/spec/frontend/pipeline_editor/components/ui/confirm_unsaved_changes_dialog_spec.js
@@ -0,0 +1,42 @@
+import { shallowMount } from '@vue/test-utils';
+import ConfirmDialog from '~/pipeline_editor/components/ui/confirm_unsaved_changes_dialog.vue';
+
+describe('pipeline_editor/components/ui/confirm_unsaved_changes_dialog', () => {
+  let beforeUnloadEvent;
+  let setDialogContent;
+  let wrapper;
+
+  const createComponent = (propsData = {}) => {
+    wrapper = shallowMount(ConfirmDialog, {
+      propsData,
+    });
+  };
+
+  beforeEach(() => {
+    beforeUnloadEvent = new Event('beforeunload');
+    jest.spyOn(beforeUnloadEvent, 'preventDefault');
+    setDialogContent = jest.spyOn(beforeUnloadEvent, 'returnValue', 'set');
+  });
+
+  afterEach(() => {
+    beforeUnloadEvent.preventDefault.mockRestore();
+    setDialogContent.mockRestore();
+    wrapper.destroy();
+  });
+
+  it('shows confirmation dialog when there are unsaved changes', () => {
+    createComponent({ hasUnsavedChanges: true });
+    window.dispatchEvent(beforeUnloadEvent);
+
+    expect(beforeUnloadEvent.preventDefault).toHaveBeenCalled();
+    expect(setDialogContent).toHaveBeenCalledWith('');
+  });
+
+  it('does not show confirmation dialog when there are no unsaved changes', () => {
+    createComponent({ hasUnsavedChanges: false });
+    window.dispatchEvent(beforeUnloadEvent);
+
+    expect(beforeUnloadEvent.preventDefault).not.toHaveBeenCalled();
+    expect(setDialogContent).not.toHaveBeenCalled();
+  });
+});