Add existing GAM 3.21 code

simplejson/tests/test_encode_for_html.py

@@ -0,0 +1,30 @@
+import unittest
+
+import simplejson as json
+
+class TestEncodeForHTML(unittest.TestCase):
+
+    def setUp(self):
+        self.decoder = json.JSONDecoder()
+        self.encoder = json.JSONEncoderForHTML()
+
+    def test_basic_encode(self):
+        self.assertEqual(r'"\u0026"', self.encoder.encode('&'))
+        self.assertEqual(r'"\u003c"', self.encoder.encode('<'))
+        self.assertEqual(r'"\u003e"', self.encoder.encode('>'))
+
+    def test_basic_roundtrip(self):
+        for char in '&<>':
+            self.assertEqual(
+                char, self.decoder.decode(
+                    self.encoder.encode(char)))
+
+    def test_prevent_script_breakout(self):
+        bad_string = '</script><script>alert("gotcha")</script>'
+        self.assertEqual(
+            r'"\u003c/script\u003e\u003cscript\u003e'
+            r'alert(\"gotcha\")\u003c/script\u003e"',
+            self.encoder.encode(bad_string))
+        self.assertEqual(
+            bad_string, self.decoder.decode(
+                self.encoder.encode(bad_string)))