Support receiving multiple header blocks in http responses

One user experiences receiving a "HTTP/1.1 200 Connection established"
header block before a "HTTP/2 200" header block with the headers. I'm
not sure why specifically this happens, but I know a similar response
will happen if redirects are followed.

This wasn't supported by the http_check_ratelimited function which
splits the header from the body. It now splits out all the header blocks
from the body and uses the status and headers from the last one.

1 files changed, 49 insertions, 0 deletions

diff --git a/_pytest/test_http_check_ratelimited.py b/_pytest/test_http_check_ratelimited.py
new file mode 100644
index 0000000..948f247
--- /dev/null
+++ b/_pytest/test_http_check_ratelimited.py
@@ -0,0 +1,49 @@
+# -*- coding: utf-8 -*-
+
+from __future__ import print_function, unicode_literals
+from textwrap import dedent
+
+from wee_slack import SlackRequest
+
+
+def test_http_check_ratelimited_supports_multiple_headers(realish_eventrouter):
+    response = (
+        dedent(
+            """
+            HTTP/1.1 200 Connection established
+
+            HTTP/2 200
+            content-type: application/json; charset=utf-8
+
+            {"ok": true}
+            """
+        )
+        .strip()
+        .replace("\n", "\r\n")
+    )
+
+    request_metadata = SlackRequest(None, "", token="xoxp-1")
+    body, error = realish_eventrouter.http_check_ratelimited(request_metadata, response)
+    assert body == '{"ok": true}'
+    assert error == ""
+
+
+def test_http_check_ratelimited_return_error_when_ratelimited(realish_eventrouter):
+    response = (
+        dedent(
+            """
+            HTTP/2 429
+            content-type: application/json; charset=utf-8
+            retry-after: 10
+
+            {"ok": false, "error": "ratelimited"}
+            """
+        )
+        .strip()
+        .replace("\n", "\r\n")
+    )
+
+    request_metadata = SlackRequest(None, "", token="xoxp-1")
+    body, error = realish_eventrouter.http_check_ratelimited(request_metadata, response)
+    assert body == ""
+    assert error == "ratelimited"