feat(tia): adds poc

src/Subscribers/EnsureTiaCoverageIsFlushed.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Subscribers;
+
+use Pest\Support\Tia\Recorder;
+use PHPUnit\Event\Test\Finished;
+use PHPUnit\Event\Test\FinishedSubscriber;
+
+/**
+ * Stops PCOV collection after each test and merges the covered files into the
+ * TIA recorder's aggregate map. No-op unless the recorder is active.
+ *
+ * @internal
+ */
+final class EnsureTiaCoverageIsFlushed implements FinishedSubscriber
+{
+    public function notify(Finished $event): void
+    {
+        Recorder::instance()->endTest();
+    }
+}

src/Subscribers/EnsureTiaCoverageIsRecorded.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Subscribers;
+
+use Pest\Support\Tia\Recorder;
+use PHPUnit\Event\Code\TestMethod;
+use PHPUnit\Event\Test\Prepared;
+use PHPUnit\Event\Test\PreparedSubscriber;
+
+/**
+ * Starts PCOV collection before each test. No-op unless the TIA recorder was
+ * activated by the `--tia` plugin.
+ *
+ * @internal
+ */
+final class EnsureTiaCoverageIsRecorded implements PreparedSubscriber
+{
+    public function notify(Prepared $event): void
+    {
+        $recorder = Recorder::instance();
+
+        if (! $recorder->isActive()) {
+            return;
+        }
+
+        $test = $event->test();
+
+        if (! $test instanceof TestMethod) {
+            return;
+        }
+
+        $recorder->beginTest($test->className(), $test->methodName(), $test->file());
+    }
+}