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Task Compare (Diff)

Hesperida provides a pairwise diff view for completed queue tasks of the same tool type.

Purpose​

  • Compare two completed runs directly.
  • Identify what became better, worse, fixed, or unchanged.
  • Inspect score and latency deltas where applicable.

Entry Point​

From /job-queue, open a completed task row and choose Compare from the actions menu.

This opens:

  • /job-queue/{leftTaskId}/diff

The left side is preloaded from the route param.

Comparison Flow​

  1. Left task/result is loaded by page load.
  2. User selects a right task in the compare form.
  3. Form submission (use:enhance) fetches only the right task/result.
  4. Diff computation runs in the frontend.

There is no backend compare endpoint for this feature.

Constraints​

  • Both tasks must be completed.
  • Both tasks must be of the same type.
  • Left task is excluded from right-side candidates.
  • Optional Same Website only switch narrows right-side options.

Output​

The diff table classifies rows as:

  • new
  • fixed
  • stale
  • changed

Summary cards show counts per classification.

When available:

  • score delta is shown for score-based tools
  • latency delta is shown for tools exposing latency metrics

Swap​

After both sides are populated, Swap reverses left/right and recalculates the diff in place.