Return empty array instead of undefined in mapTimestampToAxisTicksByFormat

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 19:39:43 +08:00
parent 35d5b07b07
commit a669c8e98e
2 changed files with 3 additions and 2 deletions
--- a/tests/unit/module/timeLabel.test.js
+++ b/tests/unit/module/timeLabel.test.js
@@ -168,7 +168,7 @@ describe("mapTimestampToAxisTicksByFormat", () => {
    expect(result[0]).toBe("2023/01/15");
  });

-  it("returns undefined for falsy input", () => {
-    expect(mapTimestampToAxisTicksByFormat(null, "YYYY")).toBeUndefined();
+  it("returns empty array for falsy input", () => {
+    expect(mapTimestampToAxisTicksByFormat(null, "YYYY")).toEqual([]);
  });
 });