fix bug that causes iter_lines to truncate content

Currently, if the response does not terminate with a newline, iter_lines
truncates the trailing remainder.

requests/models.py

@@ -597,7 +597,7 @@ class Response(object):
         def generate():
             chunk = []
 
-            while 1:
+            while True:
                 c = self.raw.read(1)
                 if not c:
                     break
@@ -608,6 +608,11 @@ class Response(object):
                 else:
                     chunk.append(c)
 
+            # Yield the remainder, in case the response
+            # did not terminate with a newline
+            if chunk:
+                yield ''.join(chunk)
+
             self._content_consumed = True
 
         gen = generate()

test_requests.py

@@ -3,6 +3,7 @@
 
 from __future__ import with_statement
 
+import StringIO
 import time
 import os
 import unittest
@@ -603,5 +604,21 @@ class RequestsTestSuite(unittest.TestCase):
 
             self.assertEqual(i, len_lines)
 
+        # Test 'dangling' fragment in responses that do not terminate in
+        # a newline.
+        quote = (
+            '''Why will he not upon our fair request\n'''
+            '''Untent his person and share the air with us?'''
+        )
+
+        # Make a request and monkey-patch its contents
+        r = requests.get(httpbin('get'))
+        r.raw = StringIO.StringIO(quote)
+
+        # Make sure iter_lines doesn't chop the trailing bit
+        lines = '\n'.join(r.iter_lines())
+        self.assertEqual(lines, quote)
+
+
 if __name__ == '__main__':
     unittest.main()