Hi! I’m configuring Content negotiation for ktor client as follow: ```install(ContentNegotiation) { ...

# ktor

[Arnau Miro]

Hi!
I’m configuring Content negotiation for ktor client as follow:

install(ContentNegotiation) {
    json(Json {
        prettyPrint = true
        isLenient = true
        ignoreUnknownKeys = true
    }, contentType = ContentType.Application.Json)
}

But client is responding that one incoming param is not on the serialized data class and I should add ignoreUnknownKeys = true to Json{}, but I already have it

[Aleksei Tirman [JB]]

Can you share the data class and the actual JSON?

[Arnau Miro]

I’ll share a test

[Arnau Miro]

@Serializable
data class Test(val singleParam: String, val otherParam: String)

get("/test") {
    <http://call.application.log.info|call.application.log.info>("Test starts")
    <http://call.application.log.info|call.application.log.info>("Test ends")
    call.respond(HttpStatusCode.Accepted, Test("test", "test"))
}

[Arnau Miro]

@Test
fun eventTest() = myTestApplication {
    val response = client.get("$PATH/test") {
        header(HttpHeaders.ContentType, ContentType.Application.Json.toString())
    }
    Json.decodeFromString<TestModel>(response.bodyAsText())
}

[Arnau Miro]

I’m wondering if I need to config content-negotiation on test client

[Aleksei Tirman [JB]]

What is the definition of the TestModel class?

[Arnau Miro]

Ups…sorry

[Arnau Miro]

@Serializable
data class TestModel(val singleParam: String)

[AdamW]

Are you sure you’re not using the global Json instance there in your test, which does not have any configuration? What is the error exactly?

[Arnau Miro]

You should be right

[Arnau Miro]

I’ll test again

[Arnau Miro]

Yes, that was the problem! Many thanks!