unit test error handler

Author: soyuka

src/Runner/ErrorHandler.php

@@ -209,6 +209,11 @@ public function deprecationHandler(int $errorNumber, string $errorString, string
         return true;
     }
 
+    public function registerDeprecationHandler(): void
+    {
+        set_error_handler([self::$instance, 'deprecationHandler'], E_USER_DEPRECATED);
+    }
+
     public function restoreDeprecationHandler(): void
     {
         restore_error_handler();
@@ -262,14 +267,6 @@ public function useDeprecationTriggers(array $deprecationTriggers): void
         $this->deprecationTriggers = $deprecationTriggers;
     }
 
-    /**
-     * @param list<array{int, string, string, int}> $deprecations
-     */
-    public function collectGlobalDeprecations(array $deprecations): void
-    {
-        $this->globalDeprecations = $deprecations;
-    }
-
     /**
      * @param non-empty-string $file
      * @param positive-int     $line

src/TextUI/Application.php

@@ -9,7 +9,6 @@
  */
 namespace PHPUnit\TextUI;
 
-use const E_USER_DEPRECATED;
 use const PHP_EOL;
 use const PHP_VERSION;
 use function assert;
@@ -21,7 +20,6 @@
 use function method_exists;
 use function printf;
 use function realpath;
-use function set_error_handler;
 use function sprintf;
 use function str_contains;
 use function trim;
@@ -180,7 +178,7 @@ public function run(array $argv): int
 
             EventFacade::instance()->seal();
 
-            set_error_handler([ErrorHandler::instance(), 'deprecationHandler'], E_USER_DEPRECATED);
+            ErrorHandler::instance()->registerDeprecationHandler();
 
             $testSuite = $this->buildTestSuite($configuration);
 

tests/unit/Runner/ErrorHandlerTest.php

@@ -0,0 +1,35 @@
+<?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.
+ */
+namespace PHPUnit\Runner;
+
+use const E_USER_DEPRECATED;
+use function trigger_error;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\Small;
+use PHPUnit\Framework\TestCase;
+use ReflectionClass;
+
+#[CoversClass(ErrorHandler::class)]
+#[Small]
+final class ErrorHandlerTest extends TestCase
+{
+    public function testThrowsExceptionWhenUsingInvalidOrderOption(): void
+    {
+        $errorHandler = ErrorHandler::instance();
+        $errorHandler->registerDeprecationHandler();
+        trigger_error('deprecation', E_USER_DEPRECATED);
+        $errorHandler->restoreDeprecationHandler();
+        $refl                   = new ReflectionClass($errorHandler);
+        $globalDeprecations     = $refl->getProperty('globalDeprecations');
+        $registeredDeprecations = $globalDeprecations->getValue($errorHandler);
+        $this->assertCount(1, $registeredDeprecations);
+        $this->assertSame('deprecation', $registeredDeprecations[0][1]);
+    }
+}