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Use cases

Bug fix with a regression-test cycle

A reported bug first gets a regression test that demonstrably shows it red, then the fix, until that same test turns green.

Illustration for the use case “Bug fix with a regression-test cycle” (decorative)

Case study in full

Synthetic example — illustrative magnitudes, not a measurement.

Stack profile: php-laravel-13 · Data origin: Synthetic example, not a reference run. · Measurement period: —

A reproducible bug has been reported, but no test captures it permanently. Without such a test, the same bug can return unnoticed as soon as the affected code changes again.

Out of scope — not automated: Not automated: classifying the bug as reproducible and relevant remains a human decision, as does approving the fix and its counter-check before the merge.

Prerequisites

Workflow

  1. The bug report from the tracker is turned into a plan with a reproduction step.
  2. A regression test is added that demonstrably shows the bug as red before the fix.
  3. The actual fix is implemented until that same test turns green.
  4. The counter-check runs against the full affected test suite, not just the new test.
  5. The result goes out as a pull request to the repository, referencing the bug report.

Result artifacts

Key figures

Scope

Stories/tickets
1
Slices
3
Files/modules
6

Throughput

Validated slices
3
Retries
3
Human approvals
1

Quality

Checks run
Reproduktionstest, Regressionstest, Vollständige Testsuite
Gates passed
3
Gates failed
1
Remaining debt
A related code path was flagged as possibly affected and logged as a separate ticket for review.

Resources — no pricing

Prompt tokens
40000
Completion tokens
15000
Cache tokens
50000
Model calls
20
Sandbox runtime
5 minutes
Model/stack context
Stack: PHP with Laravel 13, MVC (profile php-laravel-13).

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