Added better strict JS tests. Thanks @robhudson for pointing this out

appvalidator/specs/webapps.py

@@ -1,5 +1,5 @@
 import copy
-import json
+import simplejson as json
 import types
 import urlparse
 
@@ -267,7 +267,7 @@ class WebappSpec(Spec):
 
     def parse(self, data):
         if isinstance(data, types.StringTypes):
-            return json.loads(data)
+            return json.loads(data, strict=True)
         return data
 
     def validate_root_node(self, root):

tests/test_controlchars.py

@@ -1,11 +1,11 @@
+from simplejson import JSONDecodeError
 import sys
 
-from nose.tools import eq_, nottest
+from nose.tools import eq_, nottest, raises
 
-from appvalidator.errorbundle import ErrorBundle
-from appvalidator.errorbundle.outputhandlers.shellcolors import OutputHandler
-import appvalidator.unicodehelper
+from appvalidator.specs.webapps import WebappSpec
 import appvalidator.testcases.scripting
+import appvalidator.unicodehelper
 from helper import TestCase
 
 
@@ -50,3 +50,14 @@ class TestControlChars(TestCase):
         self.run_test("tests/resources/controlchars/controlchars_utf-8_warn.js")
         self.assert_failed(with_warnings=True)
         eq_(self.err.warnings[0]["id"][2], "syntax_error")
+
+    @raises(JSONDecodeError)
+    def test_controlchar_in_webapp(self):
+        """
+        Test that unescaped control characters cause parse errors in the webapp
+        spec.
+        """
+
+        data = '''{"foo":"%s"}''' % chr(7)  # Bell!
+        self.setup_err()
+        webapp = WebappSpec(data, self.err)