Accept extension of JSON content-type (Azure#6583)

* Accept extension of JSON content-type

* Adding text/something+json test

* Support digit

Author: lmazuel

sdk/core/azure-core/azure/core/pipeline/policies/universal.py

@@ -266,10 +266,9 @@ def on_response(self, request, response):
 class ContentDecodePolicy(SansIOHTTPPolicy):
     """Policy for decoding unstreamed response content.
     """
-    JSON_MIMETYPES = [
-        'application/json',
-        'text/json' # Because we're open minded people...
-    ]
+    # Accept "text" because we're open minded people...
+    JSON_REGEXP = re.compile(r'^(application|text)/([0-9a-z+.]+\+)?json$')
+
     # Name used in context
     CONTEXT_NAME = "deserialized_data"
 
@@ -301,7 +300,7 @@ def deserialize_from_text(cls, response, content_type=None):
         if content_type is None:
             return data
 
-        if content_type in cls.JSON_MIMETYPES:
+        if cls.JSON_REGEXP.match(content_type):
             try:
                 return json.loads(data_as_str)
             except ValueError as err:

sdk/core/azure-core/tests/test_universal_pipeline.py

@@ -160,6 +160,18 @@ def body(self):
     result = response.context["deserialized_data"]
     assert result["success"] is True
 
+    # Simple JSON with complex content_type
+    response = build_response(b'{"success": true}', content_type="application/vnd.microsoft.appconfig.kv.v1+json")
+    raw_deserializer.on_response(None, response)
+    result = response.context["deserialized_data"]
+    assert result["success"] is True
+
+    # Simple JSON with complex content_type, v2
+    response = build_response(b'{"success": true}', content_type="text/vnd.microsoft.appconfig.kv.v1+json")
+    raw_deserializer.on_response(None, response)
+    result = response.context["deserialized_data"]
+    assert result["success"] is True
+
     # For compat, if no content-type, decode JSON
     response = build_response(b'"data"')
     raw_deserializer.on_response(None, response)