I am getting an issue when combining `MockEngine` with `Json`, but the same exact logic is working w...

# ktor

[Javier]

I am getting an issue when combining MockEngine with Json, but the same exact logic is working when fetching from remote, more info in 🧵

[Javier]

No transformation found: class io.ktor.utils.io.ByteBufferChannel -> class com.javiersc.either.network.ktor.TodoDTO
with response from <http://localhost/path>:
status: 200 OK
response headers: 

io.ktor.client.call.NoTransformationFoundException: No transformation found: class io.ktor.utils.io.ByteBufferChannel -> class com.javiersc.either.network.ktor.TodoDTO
with response from <http://localhost/path>:
status: 200 OK
response headers:

[Javier]

image.png,image.png

[Javier]

the CIO one is working perfectly, meanwhile the MockEngine one, which I think is doing the same, it fails

[Javier]

TodoDTO is the same class for both tests

[Javier]

The TODO string can be serialized if I use it with the Json without using Ktor

[Aleksei Tirman [JB]]

Could you please try to respond with the Content-Type header?

respond(TODO, headers = headersOf(HttpHeaders.ContentType, ContentType.Application.Json.toString()))

[Javier]

It works! thank you 🙂