Fix aiohttp tests to include content type when parsing response to json

tests/integration/aiohttp_utils.py

@@ -1,8 +1,8 @@
 import aiohttp
 
 
-async def aiohttp_request(loop, method, url, output='text', encoding='utf-8', **kwargs):  # NOQA: E999
-    async with aiohttp.ClientSession(loop=loop) as session:  # NOQA: E999
+async def aiohttp_request(loop, method, url, output='text', encoding='utf-8', headers=None, **kwargs):  # NOQA: E999
+    async with aiohttp.ClientSession(loop=loop, headers=headers or {}) as session:  # NOQA: E999
         async with session.request(method, url, **kwargs) as response:  # NOQA: E999
             if output == 'text':
                 content = await response.text()  # NOQA: E999

tests/integration/test_aiohttp.py

@@ -71,11 +71,13 @@ def test_text(tmpdir, scheme):
 
 def test_json(tmpdir, scheme):
     url = scheme + '://httpbin.org/get'
+    headers = {'Content-Type': 'application/json'}
+
     with vcr.use_cassette(str(tmpdir.join('json.yaml'))):
-        _, response_json = get(url, output='json')
+        _, response_json = get(url, output='json', headers=headers)
 
     with vcr.use_cassette(str(tmpdir.join('json.yaml'))) as cassette:
-        _, cassette_response_json = get(url, output='json')
+        _, cassette_response_json = get(url, output='json', headers=headers)
         assert cassette_response_json == response_json
         assert cassette.play_count == 1
 
@@ -105,24 +107,28 @@ def test_post(tmpdir, scheme):
 
 def test_params(tmpdir, scheme):
     url = scheme + '://httpbin.org/get'
+    headers = {'Content-Type': 'application/json'}
     params = {'a': 1, 'b': False, 'c': 'c'}
+
     with vcr.use_cassette(str(tmpdir.join('get.yaml'))) as cassette:
-        _, response_json = get(url, output='json', params=params)
+        _, response_json = get(url, output='json', params=params, headers=headers)
 
     with vcr.use_cassette(str(tmpdir.join('get.yaml'))) as cassette:
-        _, cassette_response_json = get(url, output='json', params=params)
+        _, cassette_response_json = get(url, output='json', params=params, headers=headers)
         assert cassette_response_json == response_json
         assert cassette.play_count == 1
 
 
 def test_params_same_url_distinct_params(tmpdir, scheme):
     url = scheme + '://httpbin.org/get'
+    headers = {'Content-Type': 'application/json'}
     params = {'a': 1, 'b': False, 'c': 'c'}
+
     with vcr.use_cassette(str(tmpdir.join('get.yaml'))) as cassette:
-        _, response_json = get(url, output='json', params=params)
+        _, response_json = get(url, output='json', params=params, headers=headers)
 
     with vcr.use_cassette(str(tmpdir.join('get.yaml'))) as cassette:
-        _, cassette_response_json = get(url, output='json', params=params)
+        _, cassette_response_json = get(url, output='json', params=params, headers=headers)
         assert cassette_response_json == response_json
         assert cassette.play_count == 1