add tests

src/tests/utils/time.test.ts

@@ -111,4 +111,18 @@ describe("Relative time", () => {
       expect(timeDeltaToString(name)).toMatch(/1w 1d 6h|1w 1d 5h 59m 5\ds/);
     });
   }
+  {
+    // We do +2 because we do -2 in the code to compensate for Discord's latency.
+    // This gives us the case where (normally) there is a 0s delay.
+    const name = Date.now() + 2 * 1000;
+    test(name.toString(), () => {
+      expect(timeDeltaToString(name)).toMatch(/\ds/);
+    });
+  }
+  {
+    const name = Date.now();
+    test(name.toString(), () => {
+      expect(timeDeltaToString(name)).toMatch(/\ds/);
+    });
+  }
 });