1 files changed, 29 insertions, 0 deletions
diff --git a/spec/frontend/work_items/notes/collapse_utils_spec.js b/spec/frontend/work_items/notes/collapse_utils_spec.js
new file mode 100644
index 00000000000..c26ef891e9f
--- /dev/null
+++ b/spec/frontend/work_items/notes/collapse_utils_spec.js
@@ -0,0 +1,29 @@
+import {
+  isDescriptionSystemNote,
+  getTimeDifferenceInMinutes,
+} from '~/work_items/notes/collapse_utils';
+import { workItemSystemNoteWithMetadata } from '../mock_data';
+
+describe('Work items collapse utils', () => {
+  it('checks if a system note is of a description type', () => {
+    expect(isDescriptionSystemNote(workItemSystemNoteWithMetadata)).toEqual(true);
+  });
+
+  it('returns false when a system note is not a description type', () => {
+    expect(isDescriptionSystemNote({ ...workItemSystemNoteWithMetadata, system: false })).toEqual(
+      false,
+    );
+  });
+
+  it('gets the time difference between two notes', () => {
+    const anotherSystemNote = {
+      ...workItemSystemNoteWithMetadata,
+      createdAt: '2023-05-06T07:19:37Z',
+    };
+
+    // kept the dates 24 hours apart so 24 * 60 mins = 1440
+    expect(getTimeDifferenceInMinutes(workItemSystemNoteWithMetadata, anotherSystemNote)).toEqual(
+      1440,
+    );
+  });
+});