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diff --git a/vendor/psy/psysh/test/Psy/Test/CodeCleaner/NamespacePassTest.php b/vendor/psy/psysh/test/Psy/Test/CodeCleaner/NamespacePassTest.php
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index 000000000..553a699a7
--- /dev/null
+++ b/vendor/psy/psysh/test/Psy/Test/CodeCleaner/NamespacePassTest.php
@@ -0,0 +1,56 @@
+<?php
+
+/*
+ * This file is part of Psy Shell.
+ *
+ * (c) 2012-2017 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Test\CodeCleaner;
+
+use Psy\CodeCleaner;
+use Psy\CodeCleaner\NamespacePass;
+
+class NamespacePassTest extends CodeCleanerTestCase
+{
+    private $cleaner;
+
+    public function setUp()
+    {
+        $this->cleaner = new CodeCleaner();
+        $this->setPass(new NamespacePass($this->cleaner));
+    }
+
+    public function testProcess()
+    {
+        $this->process('array_merge()');
+        $this->assertNull($this->cleaner->getNamespace());
+
+        // A non-block namespace statement should set the current namespace.
+        $this->process('namespace Alpha');
+        $this->assertEquals(array('Alpha'), $this->cleaner->getNamespace());
+
+        // A new non-block namespace statement should override the current namespace.
+        $this->process('namespace Beta; class B {}');
+        $this->assertEquals(array('Beta'), $this->cleaner->getNamespace());
+
+        // @todo Figure out if we can detect when the last namespace block is
+        // bracketed or unbracketed, because this should really clear the
+        // namespace at the end...
+        $this->process('namespace Gamma { array_merge(); }');
+        $this->assertEquals(array('Gamma'), $this->cleaner->getNamespace());
+
+        // A null namespace clears out the current namespace.
+        $this->process('namespace { array_merge(); }');
+        $this->assertNull($this->cleaner->getNamespace());
+    }
+
+    private function process($code)
+    {
+        $stmts = $this->parse($code);
+        $this->traverse($stmts);
+    }
+}