Add polyfill for TestCase::createMock()

Author: nicolas-grekas

ForwardCompatTestTrait.php

@@ -15,14 +15,21 @@
 
 // A trait to provide forward compatibility with newest PHPUnit versions
 
-if (method_exists(\ReflectionMethod::class, 'hasReturnType') && (new \ReflectionMethod(TestCase::class, 'tearDown'))->hasReturnType()) {
+$r = new \ReflectionClass(TestCase::class);
+
+if (\PHP_VERSION_ID < 70000 || !$r->hasMethod('createMock') || !$r->getMethod('createMock')->hasReturnType()) {
+    trait ForwardCompatTestTrait
+    {
+        use Legacy\ForwardCompatTestTraitForV5;
+    }
+} elseif ($r->getMethod('tearDown')->hasReturnType()) {
     trait ForwardCompatTestTrait
     {
         use Legacy\ForwardCompatTestTraitForV8;
     }
 } else {
     trait ForwardCompatTestTrait
     {
-        use Legacy\ForwardCompatTestTraitForV5;
+        use Legacy\ForwardCompatTestTraitForV7;
     }
 }

Legacy/ForwardCompatTestTraitForV5.php

@@ -11,6 +11,8 @@
 
 namespace Symfony\Bridge\PhpUnit\Legacy;
 
+use PHPUnit\Framework\MockObject\MockObject;
+
 /**
  * @internal
  */
@@ -80,6 +82,25 @@ private function doTearDown()
         parent::tearDown();
     }
 
+    /**
+     * @param string $originalClassName
+     *
+     * @return MockObject
+     */
+    protected function createMock($originalClassName)
+    {
+        $mock = $this->getMockBuilder($originalClassName)
+            ->disableOriginalConstructor()
+            ->disableOriginalClone()
+            ->disableArgumentCloning();
+
+        if (method_exists($mock, 'disallowMockingUnknownTypes')) {
+            $mock = $mock->disallowMockingUnknownTypes();
+        }
+
+        return $mock->getMock();
+    }
+
     /**
      * @param string $message
      *

Legacy/ForwardCompatTestTraitForV7.php

@@ -0,0 +1,35 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\PhpUnit\Legacy;
+
+use PHPUnit\Framework\MockObject\MockObject;
+
+/**
+ * @internal
+ */
+trait ForwardCompatTestTraitForV7
+{
+    use ForwardCompatTestTraitForV5;
+
+    /**
+     * @param string|string[] $originalClassName
+     */
+    protected function createMock($originalClassName): MockObject
+    {
+        return $this->getMockBuilder($originalClassName)
+            ->disableOriginalConstructor()
+            ->disableOriginalClone()
+            ->disableArgumentCloning()
+            ->disallowMockingUnknownTypes()
+                ->getMock();
+    }
+}