Work around the fact that dict does not truly implement Mapping (get needs positional args in dict)

Author: adamtheturtle

src/mock_vws/_database_matchers.py

@@ -35,11 +35,12 @@ def get_database_matching_client_keys(
     Raises:
         ValueError: No database matches the given request.
     """
-    content_type = request_headers.get("Content-Type", default="").split(
-        sep=";"
-    )[0]
-    auth_header = request_headers.get("Authorization")
-    date = request_headers.get("Date", default="")
+    request_headers_dict = dict(request_headers)
+    content_type = request_headers_dict.get("Content-Type", "").split(sep=";")[
+        0
+    ]
+    auth_header = request_headers_dict.get("Authorization")
+    date = request_headers_dict.get("Date", "")
 
     for database in databases:
         expected_authorization_header = authorization_header(
@@ -82,10 +83,11 @@ def get_database_matching_server_keys(
     Raises:
         ValueError: No database matches the given request.
     """
-    content_type_header = request_headers.get("Content-Type", default="")
+    request_headers_dict = dict(request_headers)
+    content_type_header = request_headers_dict.get("Content-Type", "")
     content_type = content_type_header.split(sep=";")[0]
-    auth_header = request_headers.get("Authorization")
-    date = request_headers.get("Date", default="")
+    auth_header = request_headers_dict.get("Authorization")
+    date = request_headers_dict.get("Date", "")
 
     for database in databases:
         expected_authorization_header = authorization_header(

src/mock_vws/_query_validators/content_type_validators.py

@@ -38,7 +38,8 @@ def validate_content_type_header(
         NoContentTypeError: The content type header is either empty or not
             given.
     """
-    content_type_header = request_headers.get("Content-Type", default="")
+    request_headers_dict = dict(request_headers)
+    content_type_header = request_headers_dict.get("Content-Type", "")
     if not content_type_header:
         _LOGGER.warning(msg="The content type header is empty.")
         raise NoContentTypeError

src/mock_vws/_services_validators/content_length_validators.py

@@ -33,9 +33,10 @@ def validate_content_length_header_is_int(
             integer
     """
     body_length = len(request_body)
-    given_content_length = request_headers.get(
+    request_headers_dict = dict(request_headers)
+    given_content_length = request_headers_dict.get(
         "Content-Length",
-        default=body_length,
+        body_length,
     )
 
     try:
@@ -62,9 +63,10 @@ def validate_content_length_header_not_too_large(
             that the content length is greater than the body length.
     """
     body_length = len(request_body)
-    given_content_length = request_headers.get(
+    request_headers_dict = dict(request_headers)
+    given_content_length = request_headers_dict.get(
         "Content-Length",
-        default=body_length,
+        body_length,
     )
     given_content_length_value = int(given_content_length)
     # We skip coverage here as running a test to cover this is very slow.
@@ -90,9 +92,10 @@ def validate_content_length_header_not_too_small(
             the content length is smaller than the body length.
     """
     body_length = len(request_body)
-    given_content_length = request_headers.get(
+    request_headers_dict = dict(request_headers)
+    given_content_length = request_headers_dict.get(
         "Content-Length",
-        default=body_length,
+        body_length,
     )
     given_content_length_value = int(given_content_length)
 

src/mock_vws/_services_validators/content_type_validators.py

@@ -30,10 +30,14 @@ def validate_content_type_header_given(
         AuthenticationFailureError: No ``Content-Type`` header is given and the
             request requires one.
     """
+    request_headers_dict = dict(request_headers)
     request_needs_content_type = bool(
         request_method in {HTTPMethod.POST, HTTPMethod.PUT},
     )
-    if request_headers.get("Content-Type") or not request_needs_content_type:
+    if (
+        request_headers_dict.get("Content-Type")
+        or not request_needs_content_type
+    ):
         return
 
     _LOGGER.warning(msg="No Content-Type header is given.")

tests/mock_vws/utils/__init__.py

@@ -82,7 +82,7 @@ def auth_header_content_type(self) -> str:
         """
         The content type to use for the `Authorization` header.
         """
-        full_content_type = self.headers.get("Content-Type", default="")
+        full_content_type = self.headers.get("Content-Type", "")
         return full_content_type.split(sep=";")[0]