Graphql codegen near operation bug

This repository is created to illustrate a bug where using the codegen preset near-operation-file results in skipped typechecking operations.

Given the following codegen yaml

generates:
  generated:
    documents: "*.graphql"
    preset: near-operation-file
    presetConfig:
      extension: .generated.ts
      baseTypesPath: ./types.ts
    plugins:
      - typescript-operations
      - typescript-react-apollo
    config:
      withHooks: true
    schema: ./schema.graphql

The schema

schema {
  mutation: Mutation
  query: Query
}

type User {
  id: ID!
  name: String!
}

input CreateUserInput {
  name: String!
}

type Query {
  user(id: ID!): User!
}

type Mutation {
  createUser(input: CreateUserInput!): User!
}

And the near-operation file:

mutation CreateUser($input: CreateUserInput!) {
  createUser(unknown: $unknown) {
    ...UNKNOWN_FRAGMENT
  }
}

Running this through codegen with the preset near-operation-file results in no errors but the expected result is:

• unknown is not an argument
• UNKNOWN_FRAGMENT does not exist in the schema

As observed it skips the typechecking and generates code for the invalid file

Running the tests:

To run the tests clone the repo and run yarn install then yarn test. This will run the shell script run-tests.sh which will run all the tests and clean up after itself.

To run each individual tests run yarn test:setup

• yarn test:introspection to test generation using a json file generated from introspection as schema input
• yarn test:schema to test using the schema.graphql file as input
• yarn test:operations to run the operations test (This fails during typecheckign as expected)