1 files changed, 35 insertions, 0 deletions
diff --git a/spec/frontend/notes/components/note_actions/timeline_event_button_spec.js b/spec/frontend/notes/components/note_actions/timeline_event_button_spec.js
new file mode 100644
index 00000000000..658e844a9b1
--- /dev/null
+++ b/spec/frontend/notes/components/note_actions/timeline_event_button_spec.js
@@ -0,0 +1,35 @@
+import { GlButton } from '@gitlab/ui';
+import { shallowMount } from '@vue/test-utils';
+import TimelineEventButton from '~/notes/components/note_actions/timeline_event_button.vue';
+
+const emitData = {
+  noteId: '1',
+  addError: 'Error promoting the note to timeline event: %{error}',
+  addGenericError: 'Something went wrong while promoting the note to timeline event.',
+};
+
+describe('NoteTimelineEventButton', () => {
+  let wrapper;
+
+  beforeEach(() => {
+    wrapper = shallowMount(TimelineEventButton, {
+      propsData: {
+        noteId: '1',
+        isPromotionInProgress: true,
+      },
+    });
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  const findTimelineButton = () => wrapper.findComponent(GlButton);
+
+  it('emits click-promote-comment-to-event', async () => {
+    findTimelineButton().vm.$emit('click');
+
+    expect(wrapper.emitted('click-promote-comment-to-event')).toEqual([[emitData]]);
+    expect(findTimelineButton().props('disabled')).toEqual(true);
+  });
+});