This commit is contained in:
nuno maduro
2026-05-01 20:02:46 +01:00
parent 45b1d4ce20
commit bed5e5b54a
39 changed files with 4 additions and 426 deletions

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@ -11,33 +11,6 @@ use SebastianBergmann\CodeCoverage\CodeCoverage;
use Throwable;
/**
* Merges the current run's PHPUnit coverage into a cached full-suite
* snapshot so `--tia --coverage` can produce a complete report after
* executing only the affected tests.
*
* Invoked from `Pest\Support\Coverage::report()` right before the coverage
* file is consumed. A marker dropped by the `Tia` plugin gates the
* behaviour — plain `--coverage` runs (no `--tia`) leave the marker absent
* and therefore keep their existing semantics.
*
* Algorithm
* ---------
* The PHPUnit coverage PHP file unserialises to a `CodeCoverage` object.
* Its `ProcessedCodeCoverageData` stores, per source file, per line, the
* list of test IDs that covered that line. We:
*
* 1. Load the cached snapshot from `State` (serialised bytes).
* 2. Strip every test id that re-ran this time from the cached map —
* the tests that ran now are the ones whose attribution is fresh.
* 3. Merge the current run into the stripped cached snapshot via
* `CodeCoverage::merge()`.
* 4. Write the merged result back to the report path (so Pest's report
* generator sees the full suite) and back into `State` (for the
* next invocation).
*
* If no cache exists yet (first `--tia --coverage` run on this machine)
* we serialise the current object and save it — nothing to merge yet.
*
* @internal
*/
final class CoverageMerger