Use CaseInsensitiveDicts where appropriate [skip ci]

Author: adamtheturtle

tests/mock_vws/test_authorization_header.py

@@ -8,6 +8,7 @@
 import pytest
 import requests
 from requests import codes
+from requests.structures import CaseInsensitiveDict
 
 from mock_vws._constants import ResultCodes
 from tests.mock_vws.utils import Endpoint
@@ -39,7 +40,7 @@ def test_missing(self, endpoint: Endpoint) -> None:
 
         headers.pop('Authorization', None)
 
-        endpoint.prepared_request.headers = headers
+        endpoint.prepared_request.headers = CaseInsensitiveDict(data=headers)
         session = requests.Session()
         response = session.send(  # type: ignore
             request=endpoint.prepared_request,
@@ -75,7 +76,7 @@ def test_incorrect(self, endpoint: Endpoint) -> None:
             'Date': date,
         }
 
-        endpoint.prepared_request.headers = headers
+        endpoint.prepared_request.headers = CaseInsensitiveDict(data=headers)
         session = requests.Session()
         response = session.send(  # type: ignore
             request=endpoint.prepared_request,

tests/mock_vws/test_date_header.py

@@ -11,6 +11,7 @@
 import requests
 from freezegun import freeze_time
 from requests import codes
+from requests.structures import CaseInsensitiveDict
 
 from mock_vws._constants import ResultCodes
 from tests.mock_vws.utils import Endpoint
@@ -62,7 +63,7 @@ def test_no_date_header(
             'Authorization': authorization_string,
         }
         headers.pop('Date', None)
-        endpoint.prepared_request.headers = headers
+        endpoint.prepared_request.headers = CaseInsensitiveDict(data=headers)
         session = requests.Session()
         response = session.send(  # type: ignore
             request=endpoint.prepared_request,
@@ -132,7 +133,7 @@ def test_incorrect_date_format(
             'Date': date_incorrect_format,
         }
 
-        endpoint.prepared_request.headers = headers
+        endpoint.prepared_request.headers = CaseInsensitiveDict(data=headers)
         session = requests.Session()
         response = session.send(  # type: ignore
             request=endpoint.prepared_request,
@@ -213,7 +214,7 @@ def test_date_out_of_range(
             'Date': date,
         }
 
-        endpoint.prepared_request.headers = headers
+        endpoint.prepared_request.headers = CaseInsensitiveDict(data=headers)
         session = requests.Session()
         response = session.send(  # type: ignore
             request=endpoint.prepared_request,
@@ -275,7 +276,7 @@ def test_date_in_range(
             'Date': date,
         }
 
-        endpoint.prepared_request.headers = headers
+        endpoint.prepared_request.headers = CaseInsensitiveDict(data=headers)
         session = requests.Session()
         response = session.send(  # type: ignore
             request=endpoint.prepared_request,

tests/mock_vws/test_invalid_json.py

@@ -10,6 +10,7 @@
 import requests
 from freezegun import freeze_time
 from requests import codes
+from requests.structures import CaseInsensitiveDict
 
 from mock_vws._constants import ResultCodes
 from tests.mock_vws.utils import Endpoint
@@ -67,7 +68,7 @@ def test_invalid_json(
         }
 
         endpoint.prepared_request.body = content
-        endpoint.prepared_request.headers = headers
+        endpoint.prepared_request.headers = CaseInsensitiveDict(data=headers)
         endpoint.prepared_request.prepare_content_length(  # type: ignore
             body=content,
         )