Prevent memory exhaustion when generating TIA graphs with PCOV

src/Restarters/PcovRestarter.php

@@ -52,13 +52,8 @@ private function restart(string $projectRoot, array $arguments): void
         $env = $this->inheritEnv();
         $env[self::ENV_RESTARTED] = '1';
 
-        $command = array_merge(
-            [PHP_BINARY, '-d', 'pcov.directory='.$projectRoot],
-            array_values($arguments),
-        );
-
         $proc = @proc_open(
-            $command,
+            $this->command($projectRoot, $arguments),
             [STDIN, STDOUT, STDERR],
             $pipes,
             null,
@@ -74,6 +69,24 @@ private function restart(string $projectRoot, array $arguments): void
         exit($exitCode === -1 ? 1 : $exitCode);
     }
 
+    /**
+     * @param  array<int, string>  $arguments
+     * @return list<string>
+     */
+    private function command(string $projectRoot, array $arguments): array
+    {
+        return array_merge(
+            [
+                PHP_BINARY,
+                '-d',
+                'memory_limit='.ini_get('memory_limit'),
+                '-d',
+                'pcov.directory='.$projectRoot,
+            ],
+            array_values($arguments),
+        );
+    }
+
     /**
      * @return array<string, string>
      */

tests/.snapshots/success.txt

@@ -2051,6 +2051,9 @@
   ✓ preset invalid name
   ✓ preset → myFramework
 
+   PASS  Tests\Unit\Restarters\PcovRestarter
+  ✓ it preserves the active memory limit in the restarted process
+
    PASS  Tests\Unit\Support\Arr
   ✓ last → it should return false for an empty arary
   ✓ last → it should return the last element for an array with a single element
@@ -2234,4 +2237,4 @@
   ✓ pass with dataset with ('my-datas-set-value')
   ✓ within describe → pass with dataset with ('my-datas-set-value')
 
-  Tests:    2 deprecated, 4 warnings, 5 incomplete, 2 notices, 40 todos, 35 skipped, 1581 passed (3434 assertions)
+  Tests:    2 deprecated, 4 warnings, 5 incomplete, 2 notices, 40 todos, 35 skipped, 1582 passed (3435 assertions)

tests/Features/Tia.php

@@ -56,6 +56,7 @@
                 'PARATEST' => 0,
                 'PAO_DISABLE' => '1',
                 'HOME' => $home,
+                'CI_DEFAULT_BRANCH' => $branch,
             ],
         );
 

tests/Unit/Restarters/PcovRestarter.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+use Pest\Restarters\PcovRestarter;
+use Symfony\Component\Process\Process;
+
+it('preserves the active memory limit in the restarted process', function (): void {
+    $originalMemoryLimit = ini_get('memory_limit');
+
+    try {
+        ini_set('memory_limit', '1234M');
+
+        $command = new ReflectionMethod(PcovRestarter::class, 'command')
+            ->invoke(new PcovRestarter, __DIR__, ['-r', 'fwrite(STDOUT, (string) ini_get("memory_limit"));']);
+
+        assert(is_array($command));
+
+        $process = new Process($command);
+        $process->mustRun();
+
+        expect($process->getOutput())->toBe('1234M');
+    } finally {
+        ini_set('memory_limit', (string) $originalMemoryLimit);
+    }
+});

tests/Visual/Parallel.php

@@ -26,13 +26,13 @@
         $file = file_get_contents(__FILE__);
         $file = preg_replace(
             '/\$expected = \'.*?\';/',
-            "\$expected = '2 deprecated, 4 warnings, 5 incomplete, 3 notices, 40 todos, 27 skipped, 1563 passed (3379 assertions)';",
+            "\$expected = '2 deprecated, 4 warnings, 5 incomplete, 3 notices, 40 todos, 27 skipped, 1564 passed (3380 assertions)';",
             $file,
         );
         file_put_contents(__FILE__, $file);
     }
 
-    $expected = '2 deprecated, 4 warnings, 5 incomplete, 3 notices, 40 todos, 27 skipped, 1563 passed (3379 assertions)';
+    $expected = '2 deprecated, 4 warnings, 5 incomplete, 3 notices, 40 todos, 27 skipped, 1564 passed (3380 assertions)';
 
     expect($output)
         ->toContain("Tests:    {$expected}")