fix tests

netlib/http/headers.py

@@ -76,7 +76,7 @@ class Headers(MultiDict):
         For use with the "Set-Cookie" header, see :py:meth:`get_all`.
     """
 
-    def __init__(self, fields=None, **headers):
+    def __init__(self, fields=(), **headers):
         """
         Args:
             fields: (optional) list of ``(name, value)`` header byte tuples,

netlib/http/request.py

@@ -19,7 +19,7 @@ host_header_re = re.compile(r"^(?P<host>[^:]+|\[.+\])(?::(?P<port>\d+))?$")
 
 
 class RequestData(MessageData):
-    def __init__(self, first_line_format, method, scheme, host, port, path, http_version, headers=None, content=None,
+    def __init__(self, first_line_format, method, scheme, host, port, path, http_version, headers=(), content=None,
                  timestamp_start=None, timestamp_end=None):
         if not isinstance(headers, Headers):
             headers = Headers(headers)

netlib/http/response.py

@@ -11,7 +11,7 @@ from .. import utils
 
 
 class ResponseData(MessageData):
-    def __init__(self, http_version, status_code, reason=None, headers=None, content=None,
+    def __init__(self, http_version, status_code, reason=None, headers=(), content=None,
                  timestamp_start=None, timestamp_end=None):
         if not isinstance(headers, Headers):
             headers = Headers(headers)

test/mitmproxy/test_flow_export.py

@@ -22,7 +22,7 @@ def python_equals(testdata, text):
 
 req_get = lambda: netlib.tutils.treq(method='GET', content='', path=b"/path?a=foo&a=bar&b=baz")
 
-req_post = lambda: netlib.tutils.treq(method='POST', headers=None)
+req_post = lambda: netlib.tutils.treq(method='POST', headers=())
 
 req_patch = lambda: netlib.tutils.treq(method='PATCH', path=b"/path?query=param")
 

test/netlib/http/http2/test_connections.py

@@ -460,7 +460,7 @@ class TestAssembleRequest(object):
             b'',
             b'/',
             b"HTTP/2.0",
-            None,
+            (),
             None,
         ))
         assert len(bytes) == 1
@@ -475,7 +475,7 @@ class TestAssembleRequest(object):
             b'',
             b'/',
             b"HTTP/2.0",
-            None,
+            (),
             None,
         )
         req.stream_id = 0x42

test/netlib/http/test_request.py

@@ -13,7 +13,7 @@ class TestRequestData(object):
         with raises(ValueError):
             treq(headers="foobar")
 
-        assert isinstance(treq(headers=None).headers, Headers)
+        assert isinstance(treq(headers=()).headers, Headers)
 
 
 class TestRequestCore(object):

test/netlib/http/test_response.py

@@ -15,7 +15,7 @@ class TestResponseData(object):
         with raises(ValueError):
             tresp(headers="foobar")
 
-        assert isinstance(tresp(headers=None).headers, Headers)
+        assert isinstance(tresp(headers=()).headers, Headers)
 
 
 class TestResponseCore(object):