Extend functionality of MockFileSystem.move()

Tools/Scripts/webkitpy/common/system/filesystem_unittest.py

Index: Tools/Scripts/webkitpy/common/system/filesystem_unittest.py
diff --git a/Tools/Scripts/webkitpy/common/system/filesystem_unittest.py b/Tools/Scripts/webkitpy/common/system/filesystem_unittest.py
index 6a5781dbbda74a2f1f1dc849a7787c02e9f44464..91a0f1f054a7c557363ef7e4460e495f80e75569 100644
--- a/Tools/Scripts/webkitpy/common/system/filesystem_unittest.py
+++ b/Tools/Scripts/webkitpy/common/system/filesystem_unittest.py
@@ -118,6 +118,17 @@ class GenericFileSystemTests(object):
         self.assertFalse(self.fs.exists('foodir'))
         self.assertFalse(self.fs.exists(self.fs.join('foodir', 'baz')))
 
+    def test_move(self):
+        self.fs.chdir(self.generic_test_dir)
+        self.fs.move('foo.txt', 'bar.txt')
+        self.assertFalse(self.fs.exists('foo.txt'))
+        self.assertTrue(self.fs.exists('bar.txt'))
+        self.fs.move('foodir', 'bardir')
+        self.assertFalse(self.fs.exists('foodir'))
+        self.assertFalse(self.fs.exists(self.fs.join('foodir', 'baz')))
+        self.assertTrue(self.fs.exists('bardir'))
+        self.assertTrue(self.fs.exists(self.fs.join('bardir', 'baz')))
+
 
 class RealFileSystemTest(unittest.TestCase, GenericFileSystemTests):
     def setUp(self):