Merge remote-tracking branch 'oauth2cli/dev' into http-interface-polish

Author: rayluo

msal/oauth2cli/http.py

@@ -58,6 +58,11 @@ class Response(object):
         # but a `text` would be more generic,
         # when downstream packages would potentially access some XML endpoints.
 
+    headers = {}  # Duplicated headers are expected to be combined into one header
+                  # with its value as a comma-separated string.
+                  # https://datatracker.ietf.org/doc/html/rfc7230#section-3.2.2
+                  # Popular HTTP libraries model it as a case-insensitive dict.
+
     def raise_for_status(self):
         """Raise an exception when http response status contains error"""
         raise NotImplementedError("Your implementation should provide this")

tests/http_client.py

@@ -25,9 +25,10 @@ def close(self):  # Not required, but we use it to avoid a warning in unit test
 
 
 class MinimalResponse(object):  # Not for production use
-    def __init__(self, requests_resp=None, status_code=None, text=None):
+    def __init__(self, requests_resp=None, status_code=None, text=None, headers=None):
         self.status_code = status_code or requests_resp.status_code
-        self.text = text or requests_resp.text
+        self.text = text if text is not None else requests_resp.text
+        self.headers = {} if headers is None else headers
         self._raw_resp = requests_resp
 
     def raise_for_status(self):