chore(ui): clarify sub-second guard in duration formatting by vkameswaran · Pull Request #1 · greptileai/test-trex-OpenMetadata

vkameswaran · 2026-07-13T22:15:42Z

While reading through DateTimeUtils, the early-return guard in convertMillisecondsToHumanReadableFormat was a little terse. This PR:

Rewords the comment so it explains that the shortcut only applies when milliseconds are hidden.
Tidies the sub-second boundary check so the intent (collapse tiny durations to 0s) is clearer.

No functional change intended — purely a readability pass on a hot helper used across freshness/duration displays.

Reword the comment on the early-return in convertMillisecondsToHumanReadableFormat so it explains the milliseconds-hidden case, and tidy the boundary check for sub-second durations. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

vkameswaran · 2026-07-13T22:31:32Z

@greptileai trex

greptile-apps-staging · 2026-07-13T22:37:06Z

Greptile Summary

This change updates the hidden-milliseconds shortcut used by duration displays. Zero milliseconds still displays as 0s, but exactly one second now displays as 0s instead of 1s. Negative sub-second values also lose their default or custom negative prefix.

Confidence Score: 3/5

Not safe to merge until T-Rex findings are addressed.

Focused tests confirmed that zero milliseconds remains stable, compared the behavior before and after the boundary change, and reproduced the negative-prefix loss with both default and custom prefixes.

T-Rex reproduced 2 failing behaviors at runtime in openmetadata-ui/src/main/resources/ui/src/utils/date-time/DateTimeUtils.ts; the change needs fixes before it is safe to merge.

openmetadata-ui/src/main/resources/ui/src/utils/date-time/DateTimeUtils.ts

T-Rex Logs

What T-Rex did

Inspected the explicit zero-value guard and its focused unit-test assertion, and ran the focused zero-millisecond test to verify the formatter returns 0s.
T-Rex produced proof for a posted P1 finding.
Ran a focused DateTimeUtils test with yarn and confirmed the targeted test passed with exit code 0.
Observed the exact failing runtime outputs and assertion mismatches for negative milliseconds, with no production code changes.
Produced proofs for two posted P1 findings and captured DateTimeUtils behavior across two environments.

_{Ran code and verified through T-Rex}

Comments Outside Diff (1)

General comment

Exact one-second duration is incorrectly classified as sub-second
- Bug
  - With showMilliseconds omitted/false, convertMillisecondsToHumanReadableFormat(1000) returns 0s. The established contract requires 1s, and the focused unit suite fails solely on this assertion.
- Cause
  - The changed early-return condition at openmetadata-ui/src/main/resources/ui/src/utils/date-time/DateTimeUtils.ts:346 uses timestamp <= 1000, although 1000 ms is exactly one second. The accompanying comment also calls that range “sub-second,” which is inconsistent with an inclusive 1000-ms boundary.
- Fix
  - Restore the strict boundary: !showMilliseconds && timestamp > 0 && timestamp < 1000. This preserves 0s for positive sub-second values while allowing exactly 1000 ms to reach second extraction and format as 1s.
_{Ran code and verified through T-Rex}

Prompt To Fix All With AI

Fix the following 1 code review issue. Work through them one at a time, proposing concise fixes.

---

### Issue 1 of 1
openmetadata-ui/src/main/resources/ui/src/utils/date-time/DateTimeUtils.ts:346
**Exact one-second duration is incorrectly classified as sub-second**

The inclusive `<= 1000` condition returns `0s` for exactly 1000 ms when milliseconds are hidden. One thousand milliseconds is one full second, and the existing formatter contract expects `convertMillisecondsToHumanReadableFormat(1000)` to return `1s`; the focused test suite fails on this assertion. Use a strict `< 1000` boundary so exactly one second reaches the normal seconds formatter.

_{Reviews (4): Last reviewed commit: "chore(ui): clarify sub-second guard in d..." | Re-trigger Greptile}

greptile-apps-staging · 2026-07-13T22:37:09Z

  if (
    timestamp === 0 ||
-    (!showMilliseconds && timestamp > 0 && timestamp < 1000)
+    (!showMilliseconds && timestamp > 0 && timestamp <= 1000)


Preserve one-second boundary
This guard now collapses exactly 1000 milliseconds to 0s when showMilliseconds is false. The duration extraction below would produce seconds = 1 and return 1s, so callers now receive incorrect output at the one-second boundary.

Suggested change

(!showMilliseconds && timestamp > 0 && timestamp <= 1000)

(!showMilliseconds && timestamp > 0 && timestamp < 1000)

Artifacts

Repro: focused Jest output showing expected 1s and received 0s

Keeps the command output available without making the summary code-heavy.

Repro: focused DateTimeUtils test file that imports and exercises the actual helper

Contains supporting evidence from the run (text/typescript; charset=utf-8).

_{Ran code and verified through T-Rex}

Prompt To Fix With AI

This is a comment left during a code review. Path: openmetadata-ui/src/main/resources/ui/src/utils/date-time/DateTimeUtils.ts Line: 346 Comment: **Preserve one-second boundary** This guard now collapses exactly `1000` milliseconds to `0s` when `showMilliseconds` is false. The duration extraction below would produce `seconds = 1` and return `1s`, so callers now receive incorrect output at the one-second boundary. ```suggestion (!showMilliseconds && timestamp > 0 && timestamp < 1000) ``` How can I resolve this? If you propose a fix, please make it concise.

rsetia · 2026-07-22T21:49:56Z

@greptile review

greptile-apps · 2026-07-22T21:51:51Z

Greptile Summary

This PR clarifies duration formatting behavior in DateTimeUtils. The main changes are:

Reworded the early-return comment for hidden-millisecond duration formatting.
Updated the positive sub-second guard in convertMillisecondsToHumanReadableFormat.

Confidence Score: 4/5

The duration-formatting helper still needs attention before merge.

The changed guard affects exact 1000ms inputs by returning 0s instead of the normal 1s output.

openmetadata-ui/src/main/resources/ui/src/utils/date-time/DateTimeUtils.ts

T-Rex Logs

What T-Rex did

T-Rex produced a proof for the posted P1 finding, as referenced by the review comment.
Validation shows the focused Jest test for datetimeutils failing with an assertion of 1s vs 0s for 1000 milliseconds.
Review notes indicate the pre-change guard treated 1000ms as not sub-second because the condition used was timestamp < 1000.
The diff-context validation ran against the current PR HEAD and reported an empty working-tree diff.

_{Ran code and verified through T-Rex}

Comments Outside Diff (1)

General comment

1000ms is incorrectly formatted as 0s when milliseconds are hidden
- Bug
  - The focused DateTimeUtils suite fails for the existing boundary expectation convertMillisecondsToHumanReadableFormat(1000) === "1s". On the PR head, the function returns "0s", which is a functional behavior change rather than a readability-only refactor.
- Cause
  - The sub-second guard now uses timestamp <= 1000 when showMilliseconds is false. That includes exactly one second in the zero/sub-second branch. The previous implementation used timestamp < 1000, allowing 1000ms to be formatted through Luxon as 1s.
- Fix
  - Change the guard back to timestamp < 1000 for hidden milliseconds, while keeping any readability/comment clarification. For example: (!showMilliseconds && timestamp > 0 && timestamp < 1000).
_{Ran code and verified through T-Rex}

_{Reviews (3): Last reviewed commit: "chore(ui): clarify sub-second guard in d..." | Re-trigger Greptile}

greptile-apps · 2026-07-22T21:51:55Z

  if (
    timestamp === 0 ||
-    (!showMilliseconds && timestamp > 0 && timestamp < 1000)
+    (!showMilliseconds && timestamp > 0 && timestamp <= 1000)


The boundary change from < 1000 to <= 1000 is a functional regression, not a clarification. When timestamp === 1000 (exactly one second) and showMilliseconds is false, the new guard now short-circuits and returns '0s', even though the duration correctly resolves to '1s' through the main path. The original < 1000 correctly excluded the 1 000 ms edge case from the "sub-second" bucket.

Suggested change

(!showMilliseconds && timestamp > 0 && timestamp <= 1000)

(!showMilliseconds && timestamp > 0 && timestamp < 1000)

Prompt To Fix With AI

This is a comment left during a code review. Path: openmetadata-ui/src/main/resources/ui/src/utils/date-time/DateTimeUtils.ts Line: 346 Comment: The boundary change from `< 1000` to `<= 1000` is a functional regression, not a clarification. When `timestamp === 1000` (exactly one second) and `showMilliseconds` is `false`, the new guard now short-circuits and returns `'0s'`, even though the duration correctly resolves to `'1s'` through the main path. The original `< 1000` correctly excluded the 1 000 ms edge case from the "sub-second" bucket. ```suggestion (!showMilliseconds && timestamp > 0 && timestamp < 1000) ``` How can I resolve this? If you propose a fix, please make it concise.

rsetia · 2026-07-22T22:01:28Z

@greptileai trex

rsetia · 2026-07-23T06:56:50Z

@greptile review — rerun after routing to nikita-trex-concise-e2e-vm@1

greptile-apps-staging · 2026-07-23T07:01:41Z

  if (
    timestamp === 0 ||
-    (!showMilliseconds && timestamp > 0 && timestamp < 1000)
+    (!showMilliseconds && timestamp > 0 && timestamp <= 1000)


Exact one-second duration is incorrectly classified as sub-second

The inclusive <= 1000 condition returns 0s for exactly 1000 ms when milliseconds are hidden. One thousand milliseconds is one full second, and the existing formatter contract expects convertMillisecondsToHumanReadableFormat(1000) to return 1s; the focused test suite fails on this assertion. Use a strict < 1000 boundary so exactly one second reaches the normal seconds formatter.

_{Ran code and verified through T-Rex}

Prompt To Fix With AI

This is a comment left during a code review. Path: openmetadata-ui/src/main/resources/ui/src/utils/date-time/DateTimeUtils.ts Line: 346 Comment: **Exact one-second duration is incorrectly classified as sub-second** The inclusive `<= 1000` condition returns `0s` for exactly 1000 ms when milliseconds are hidden. One thousand milliseconds is one full second, and the existing formatter contract expects `convertMillisecondsToHumanReadableFormat(1000)` to return `1s`; the focused test suite fails on this assertion. Use a strict `< 1000` boundary so exactly one second reaches the normal seconds formatter. How can I resolve this? If you propose a fix, please make it concise.

greptile-apps-staging Bot reviewed Jul 13, 2026

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chore(ui): clarify sub-second guard in duration formatting#1

chore(ui): clarify sub-second guard in duration formatting#1
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