Prevent fatal errors not reported

happens when php.ini declares `display_errors=0`

Author: staabm

src/Framework/TestCase.php

@@ -1297,6 +1297,7 @@ private function runTest(): mixed
 
         $capture = tmpfile();
         assert($capture !== false);
+        ini_set('display_errors', 1);
         $errorLogPrevious = ini_set('error_log', stream_get_meta_data($capture)['uri']);
 
         try {

tests/end-to-end/regression/6294.phpt

@@ -0,0 +1,21 @@
+--TEST--
+Silent failure of PHP fatal errors
+
+https://github.com/sebastianbergmann/phpunit/issues/6294
+--INI--
+display_errors=0
+--FILE--
+<?php declare(strict_types=1);
+$_SERVER['argv'][] = '--do-not-cache-result';
+$_SERVER['argv'][] = '--no-configuration';
+$_SERVER['argv'][] = __DIR__ . '/6294/IssueTest6294.php';
+
+require_once __DIR__ . '/../../bootstrap.php';
+(new PHPUnit\TextUI\Application)->run($_SERVER['argv']);
+--EXPECTF--
+PHPUnit %s by Sebastian Bergmann and contributors.
+
+Runtime: %s
+
+
+Fatal error: Access level to B::someFunction() must be public (as in class A) in %sB.php on line %i

tests/end-to-end/regression/6294/A.php

@@ -0,0 +1,16 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of PHPUnit.
+ *
+ * (c) Sebastian Bergmann <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class A
+{
+    public function someFunction(): void
+    {
+        print 'A::someFunction' . \PHP_EOL;
+    }
+}

tests/end-to-end/regression/6294/B.php

@@ -0,0 +1,19 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of PHPUnit.
+ *
+ * (c) Sebastian Bergmann <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class B extends A
+{
+    // incorrect access level
+    protected function someFunction(): void
+    {
+        parent::someFunction();
+
+        print 'B::someFunction' . \PHP_EOL;
+    }
+}

tests/end-to-end/regression/6294/IssueTest6294.php

@@ -0,0 +1,22 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of PHPUnit.
+ *
+ * (c) Sebastian Bergmann <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+use PHPUnit\Framework\TestCase;
+
+final class IssueTest6294 extends TestCase
+{
+    public function testOne(): void
+    {
+        require_once 'A.php';
+
+        require_once 'B.php';
+
+        $this->assertSame(1, 1);
+    }
+}