From 1f412756df105fdb8452582468e6a827a7066792 Mon Sep 17 00:00:00 2001
From: Lazizbek Ergashev <lazerg2@gmail.com>
Date: Fri, 14 Aug 2026 05:18:45 +0500
Subject: [PATCH] fix(tia): re-anchor after a full suite run without a coverage
 driver

---
 src/Plugins/Tia.php                     |  6 +++++-
 tests/Features/Tia/StateReclamation.php | 27 +++++++++++++++++++++++++
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/src/Plugins/Tia.php b/src/Plugins/Tia.php
index ff1f5b066..dda0f52de 100644
--- a/src/Plugins/Tia.php
+++ b/src/Plugins/Tia.php
@@ -200,6 +200,8 @@ final class Tia implements AddsOutput, HandlesArguments, HandlesOriginalArgument
 
     private bool $graphUnreachable = false;
 
+    private bool $fullSuiteFallbackRan = false;
+
     /** @var array<int, string> */
     private array $originalArguments = [];
 
@@ -684,7 +686,7 @@ public function addOutput(int $exitCode): int
             return $exitCode;
         }
 
-        if ($this->replayRan || $this->graphUnreachable) {
+        if ($this->replayRan || $this->graphUnreachable || $this->fullSuiteFallbackRan) {
             $this->bumpRecordedSha();
         }
 
@@ -1044,6 +1046,8 @@ private function enterReplayMode(Graph $graph, string $projectRoot, array $argum
         $coverageAvailable = $this->piggybackCoverage || $this->recorder->driverAvailable();
 
         if ($hasProjectPhpSourceChanges && ! $coverageAvailable) {
+            $this->fullSuiteFallbackRan = true;
+
             $this->renderBadge('WARN', 'Detected PHP source changes but no coverage driver is available.');
             $this->renderChild('Running the full suite to avoid using a stale dependency graph.');
             $this->renderChild('Install / enable pcov or xdebug (mode: coverage) so edges can be safely refreshed after PHP refactors.');
diff --git a/tests/Features/Tia/StateReclamation.php b/tests/Features/Tia/StateReclamation.php
index c5c625bd2..e43b82173 100644
--- a/tests/Features/Tia/StateReclamation.php
+++ b/tests/Features/Tia/StateReclamation.php
@@ -358,3 +358,30 @@
         ->and($second->replayed())->toBe(Project::TOTAL_TESTS, $second->describe())
         ->and($delta->writtenCount())->toBe(0, $delta->summary());
 })->with(Project::SEQUENTIAL_AND_PARALLEL)->skipOnWindows();
+
+test('a full suite run without a coverage driver clears the tree it could not refresh', function (array $arguments): void {
+    $project = Project::make('master');
+    $project->seed('master');
+
+    $project->mutateGraph(function (array $graph): array {
+        $graph['baselines']['master']['tree'] = ['app/Calculator.php' => 'deadbeefdeadbeefdeadbeefdeadbeef'];
+
+        return $graph;
+    });
+
+    $environment = ['XDEBUG_MODE' => 'off'];
+
+    $first = $project->pestWithEnvironment($project->path(), $environment, '--tia', ...$arguments);
+
+    expect($first->exitCode)->toBe(0, $first->describe())
+        ->and($first->output)->toContain('no coverage driver is available')
+        ->and($first->tally())->toContain(Project::TOTAL_TESTS.' passed');
+
+    $project->snapshot();
+    $second = $project->pestWithEnvironment($project->path(), $environment, '--tia', ...$arguments);
+    $delta = $project->delta();
+
+    expect($second->output)->not->toContain('no coverage driver is available')
+        ->and($second->replayed())->toBe(Project::TOTAL_TESTS, $second->describe())
+        ->and($delta->writtenCount())->toBe(0, $delta->summary());
+})->with(Project::SEQUENTIAL_AND_PARALLEL)->skipOnWindows();