Merge "When detecting non-content for HTTP 204, properly catch UnicodeDecodeError."

pecan/core.py

@@ -594,9 +594,15 @@ class PecanBase(object):
             else:
                 text = None
                 if state.response.charset:
-                    # `response.text` cannot be accessed without a charset
-                    # (because we don't know which encoding to use)
-                    text = state.response.text
+                    # `response.text` cannot be accessed without a valid
+                    # charset (because we don't know which encoding to use)
+                    try:
+                        text = state.response.text
+                    except UnicodeDecodeError:
+                        # If a valid charset is not specified, don't bother
+                        # trying to guess it (because there's obviously
+                        # content, so we know this shouldn't be a 204)
+                        pass
                 if not any((state.response.body, text)):
                     state.response.status = 204
 

pecan/tests/test_base.py

@@ -68,6 +68,10 @@ class TestEmptyContent(PecanTestCase):
             def explicit_json_body(self):
                 response.json_body = {'foo': 'bar'}
 
+            @expose()
+            def non_unicode(self):
+                return chr(0xc0)
+
         return TestApp(Pecan(RootController()))
 
     def test_empty_index(self):
@@ -77,6 +81,10 @@ class TestEmptyContent(PecanTestCase):
         self.assertEqual(r.headers['Content-Length'], '0')
         self.assertEqual(len(r.body), 0)
 
+    def test_index_with_non_unicode(self):
+        r = self.app_.get('/non_unicode/')
+        self.assertEqual(r.status_int, 200)
+
     def test_explicit_body(self):
         r = self.app_.get('/explicit_body/')
         self.assertEqual(r.status_int, 200)