Patch PHPUnit mock objects to work correctly with PHP 7.4

composer.json

@@ -84,7 +84,8 @@
         "phpunit/phpunit": "4.8.34",
         "cebe/indent": "~1.0.2",
         "friendsofphp/php-cs-fixer": "~2.2.3",
-        "johnkary/phpunit-speedtrap": "^1.0"
+        "johnkary/phpunit-speedtrap": "^1.0",
+        "cweagans/composer-patches": "^1.6"
     },
     "repositories": [
         {
@@ -110,6 +111,12 @@
     "extra": {
         "branch-alias": {
             "dev-master": "2.0.x-dev"
+        },
+        "composer-exit-on-patch-failure": true,
+        "patches": {
+            "phpunit/phpunit-mock-objects": {
+                "Fix PHP 7 compatibility": "./tests/phpunit_mock_objects.patch"
+            }
         }
     }
 }

tests/phpunit_mock_objects.patch

@@ -0,0 +1,14 @@
+diff --git a/src/Framework/MockObject/Generator.php b/src/Framework/MockObject/Generator.php
+index 3df3abb..8407182 100644
+--- a/src/Framework/MockObject/Generator.php
++++ b/src/Framework/MockObject/Generator.php
+@@ -1032,7 +1032,8 @@ protected function getMethodParameters(ReflectionMethod $method, $forCall = fals
+ 
+             if (!$forCall) {
+                 if ($this->hasType($parameter)) {
+-                    $typeDeclaration = (string) $parameter->getType() . ' ';
++                    $type = $parameter->getType();
++                    $typeDeclaration = (PHP_VERSION_ID >= 70100 ? $type->getName() : (string) $type) . ' ';
+                 } elseif ($parameter->isArray()) {
+                     $typeDeclaration = 'array ';
+                 } elseif ((defined('HHVM_VERSION') || version_compare(PHP_VERSION, '5.4.0', '>='))