Fix bug that class does not bind in static double

Author: torreytsui

src/AspectMock/Core/Mocker.php

@@ -145,7 +145,7 @@ protected function stub(MethodInvocation $invocation, $params)
         $replacedMethod = $this->turnToClosure($replacedMethod);
 
         if ($invocation->isStatic()) {
-            \Closure::bind($replacedMethod, null, $invocation->getThis());
+            $replacedMethod = \Closure::bind($replacedMethod, null, $invocation->getThis());
         } else {
             $replacedMethod = $replacedMethod->bindTo($invocation->getThis(), get_class($invocation->getThis()));
         }

tests/_data/demo/UserModel.php

@@ -6,6 +6,13 @@ class UserModel {
     protected $name;
     protected $info;
 
+    private static $topSecret = 'awesome';
+
+    public static function getTopSecret()
+    {
+        throw new \PHPUnit_Framework_AssertionFailedError("I am not going to tell you");
+    }
+
     static function tableName()
     {
         return "users";

tests/_helpers/_generated/CodeGuyActions.php

@@ -1,4 +1,4 @@
-<?php  //[STAMP] 45d8efce83ec14d112c4dbd47a09e489
+<?php  //[STAMP] 24dfed59965666295fe7d207e9aa4d08
 namespace _generated;
 
 // This class was automatically generated by build task

tests/unit/StubTest.php

@@ -33,6 +33,15 @@ public function testCallback()
 
     }
 
+    public function testBindSelfCallback()
+    {
+        double::registerClass('\demo\UserModel', ['getTopSecret' => function () {
+            return UserModel::$topSecret;
+        }]);
+        $topSecret = UserModel::getTopSecret();
+        $this->assertEquals('awesome', $topSecret);
+    }
+
     public function testObjectInstance()
     {
         $user = new UserModel(['name' => 'davert']);