Incorrect uppercasing used for default values of variables used in query

[sadlerjw-bridgit]

Summary

When defining a query using a variable with a default value, if the default value is an input type with a field whose name starts with an uppercase letter, the query's generated code uses the wrong case for that letter when initializing the input type.

For example if an input is defined with a field PREFIX__id, then the generated struct for the input type reformats it to pREFIX__id but the query tries to initialize it using PREFIX__id.

See reproduction steps for a concrete example.

Ideally, the CLI would detect that an ALL-CAPS name is being used and preserve the first-letter capital, but I realize that would likely be a breaking change (and maybe unreliable), so I'd settle for the generated query using the first-letter-lower-cased name :)

Thanks!

Version

CLI 1.7.1

Steps to reproduce the behavior

Create files:

schema/schema.graphqls:

type Query {
    example(
        parameter: Param!
    ) : Response
}

input Param {
    PREFIX__id: String
    PREFIX__name: String
}

type Response {
    something: String
}

queries/query.graphql:

query exampleQuery(
    $parameter: Param = { PREFIX__id : "32" }
) {
    example(parameter: $parameter) {
        something
    }
}

apollo-codegen-config.json

{
  "schemaName" : "ApolloTest",
  "input" : {
    "operationSearchPaths" : [
      "./queries/*.graphql"
    ],
    "schemaSearchPaths" : [
      "./schema/*.graphqls"
    ]
  },
  "output" : {
    "testMocks" : {
      "none" : {
      }
    },
    "schemaTypes" : {
      "path" : "./generated",
      "moduleType" : {
        "other" : {
        }
      }
    },
    "operations" : {
      "inSchemaModule" : {
      }
    }
  }
}

Then run apollo-ios-cli generate, which generates:

generated/Schema/InputObjects/Param.graphql.swift (non-relevant bits snipped out)

public struct Param: InputObject {
  public init(
    pREFIX__id: GraphQLNullable<String> = nil,
    pREFIX__name: GraphQLNullable<String> = nil
  ) {
    __data = InputDict([
      "PREFIX__id": pREFIX__id,
      "PREFIX__name": pREFIX__name
    ])
  }
}

generated/Operations/Queries/ExampleQuery.graphql.swift (snipped again)

public class ExampleQuery: GraphQLQuery {
  public init(parameter: GraphQLNullable<Param> = .init(
    Param(PREFIX__id: "32")
  )) {
    self.parameter = parameter
  }
}

This causes a Swift compilation error since Param's initializer takes a parameter named pREFIX__id but ExampleQuery is trying to give it a parameter PREFIX__id.

Logs

No response

Anything else?

No response

[calvincestari]

Thanks for reporting this @sadlerjw-bridgit. We'll probably get this fixed along with #3249 so they can go out in the same release.