Optimize automatic JSON encoding of data in test client

[Kasun Herath]

Test client post, put, patch and delete methods automatically encode request data to JSON if content_type parameter is set to application/data.

Example

client.post(url, data=data, content_type="application/json")

Would automatically encode data as JSON.

We could also check the headers for content_type header and do the automatic encoding to be consistent.

example

client.post(url, data=data, headers={"content_type": "application/json"})

Can automatically encode data into JSON using the same mechanism.

[Natalia Bidart]

Hello Kasun Herath, thank you for your report. Could you please expand a little bit on your use case? Why do you need to pass the content-type as a header and not as param?

If you see ​the test client POST docs, the content type should be passed as a separated parameter. Following the code, if both the content_type param and the headers param with a content_type key is given, the latter overrides the first.

I'll close the ticket for now because JSON encoding is documented to occur when the content_type param is passed with a specific value, but we'd need more information to understand the specific use case to make further decisions.