Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/phpunit/phpunit-mock-objects/tests/MockObject/namespaced_interface.phpt

@@ -0,0 +1,95 @@
+--TEST--
+PHPUnit_Framework_MockObject_Generator::generate('NS\Foo', array(), 'MockFoo', TRUE, TRUE)
+--FILE--
+<?php
+namespace NS;
+
+interface Foo
+{
+    public function bar(Foo $foo);
+}
+
+require __DIR__ . '/../../vendor/autoload.php';
+
+$generator = new \PHPUnit_Framework_MockObject_Generator;
+
+$mock = $generator->generate(
+  'NS\Foo',
+  array(),
+  'MockFoo',
+  TRUE,
+  TRUE
+);
+
+print $mock['code'];
+?>
+--EXPECTF--
+class MockFoo implements PHPUnit_Framework_MockObject_MockObject, NS\Foo
+{
+    private $__phpunit_invocationMocker;
+    private $__phpunit_originalObject;
+
+    public function __clone()
+    {
+        $this->__phpunit_invocationMocker = clone $this->__phpunit_getInvocationMocker();
+    }
+
+    public function bar(NS\Foo $foo)
+    {
+        $arguments = array($foo);
+        $count     = func_num_args();
+
+        if ($count > 1) {
+            $_arguments = func_get_args();
+
+            for ($i = 1; $i < $count; $i++) {
+                $arguments[] = $_arguments[$i];
+            }
+        }
+
+        $result = $this->__phpunit_getInvocationMocker()->invoke(
+          new PHPUnit_Framework_MockObject_Invocation_Object(
+            'NS\Foo', 'bar', $arguments, $this, TRUE
+          )
+        );
+
+        return $result;
+    }
+
+    public function expects(PHPUnit_Framework_MockObject_Matcher_Invocation $matcher)
+    {
+        return $this->__phpunit_getInvocationMocker()->expects($matcher);
+    }
+
+    public function method()
+    {
+        $any = new PHPUnit_Framework_MockObject_Matcher_AnyInvokedCount;
+        $expects = $this->expects($any);
+        return call_user_func_array(array($expects, 'method'), func_get_args());
+    }
+
+    public function __phpunit_setOriginalObject($originalObject)
+    {
+        $this->__phpunit_originalObject = $originalObject;
+    }
+
+    public function __phpunit_getInvocationMocker()
+    {
+        if ($this->__phpunit_invocationMocker === NULL) {
+            $this->__phpunit_invocationMocker = new PHPUnit_Framework_MockObject_InvocationMocker;
+        }
+
+        return $this->__phpunit_invocationMocker;
+    }
+
+    public function __phpunit_hasMatchers()
+    {
+        return $this->__phpunit_getInvocationMocker()->hasMatchers();
+    }
+
+    public function __phpunit_verify()
+    {
+        $this->__phpunit_getInvocationMocker()->verify();
+        $this->__phpunit_invocationMocker = NULL;
+    }
+}