Fix function parameter default enum value

fixes #1198

Add tests
(add assertions to other test complaining about them too)

library/Mockery/Generator/StringManipulation/Pass/MethodDefinitionPass.php

@@ -76,7 +76,7 @@ protected function renderParams(Method $method, $config)
             if (!$param->isVariadic()) {
                 if (false !== $param->isDefaultValueAvailable()) {
                     $defaultValue = $param->getDefaultValue();
-                    $paramDef .= ' = ' . (is_object($defaultValue) ? get_class($defaultValue) : var_export($defaultValue, true));
+                    $paramDef .= ' = ' . ((is_object($defaultValue) && ! enum_exists($defaultValue::class)) ? get_class($defaultValue) : var_export($defaultValue, true));
                 } elseif ($param->isOptional()) {
                     $paramDef .= ' = null';
                 }

tests/PHP81/Php81LanguageFeaturesTest.php

@@ -8,7 +8,6 @@
 use ReturnTypeWillChange;
 use RuntimeException;
 use Serializable;
-
 use function pcntl_fork;
 use function pcntl_waitpid;
 use function pcntl_wexitstatus;
@@ -123,6 +122,15 @@ public function it_can_mock_a_class_with_a_never_returning_type_hint_with_exit()
 
         $mock->exits();
     }
+
+    /** @test */
+    public function it_can_parse_enum_as_default_value_correctly()
+    {
+        $mock = Mockery::mock(UsesEnums::class);
+        $mock->shouldReceive('set')->once();
+        $mock->set();
+        $this->assertEquals(SimpleEnum::first, $mock->enum); // check that mock did not set internal variable
+    }
 }
 
 interface LoggerInterface
@@ -214,3 +222,18 @@ public function foo(IntersectionTypeHelper1Interface&IntersectionTypeHelper2Inte
     {
     }
 }
+
+enum SimpleEnum
+{
+    case first;
+    case second;
+}
+
+class UsesEnums
+{
+    public SimpleEnum $enum = SimpleEnum::first;
+    public function set(SimpleEnum $enum = SimpleEnum::second)
+    {
+        $this->enum = $enum;
+    }
+}