Increase macurl2path test coverage
diff --git a/Lib/test/test_macurl2path.py b/Lib/test/test_macurl2path.py
new file mode 100644
index 0000000..3490d6d
--- /dev/null
+++ b/Lib/test/test_macurl2path.py
@@ -0,0 +1,31 @@
+import macurl2path
+import unittest
+
+class MacUrl2PathTestCase(unittest.TestCase):
+    def test_url2pathname(self):
+        self.assertEqual(":index.html", macurl2path.url2pathname("index.html"))
+        self.assertEqual(":bar:index.html", macurl2path.url2pathname("bar/index.html"))
+        self.assertEqual("foo:bar:index.html", macurl2path.url2pathname("/foo/bar/index.html"))
+        self.assertEqual("foo:bar", macurl2path.url2pathname("/foo/bar/"))
+        self.assertEqual("", macurl2path.url2pathname("/"))
+        self.assertRaises(RuntimeError, macurl2path.url2pathname, "http://foo.com")
+        self.assertEqual("index.html", macurl2path.url2pathname("///index.html"))
+        self.assertRaises(RuntimeError, macurl2path.url2pathname, "//index.html")
+        self.assertEqual(":index.html", macurl2path.url2pathname("./index.html"))
+        self.assertEqual(":index.html", macurl2path.url2pathname("foo/../index.html"))
+        self.assertEqual("::index.html", macurl2path.url2pathname("../index.html"))
+
+    def test_pathname2url(self):
+        self.assertEqual("drive", macurl2path.pathname2url("drive:"))
+        self.assertEqual("drive/dir", macurl2path.pathname2url("drive:dir:"))
+        self.assertEqual("drive/dir/file", macurl2path.pathname2url("drive:dir:file"))
+        self.assertEqual("drive/file", macurl2path.pathname2url("drive:file"))
+        self.assertEqual("file", macurl2path.pathname2url("file"))
+        self.assertEqual("file", macurl2path.pathname2url(":file"))
+        self.assertEqual("dir", macurl2path.pathname2url(":dir:"))
+        self.assertEqual("dir/file", macurl2path.pathname2url(":dir:file"))
+        self.assertRaises(RuntimeError, macurl2path.pathname2url, "/")
+        self.assertEqual("dir/../file", macurl2path.pathname2url("dir::file"))
+
+if __name__ == "__main__":
+    unittest.main()