nexus/tests/args.spec.ts

import { graphql } from 'graphql'
import {
  arg,
  booleanArg,
  floatArg,
  idArg,
  intArg,
  makeSchema,
  NexusGraphQLSchema,
  objectType,
  queryField,
  stringArg,
} from '../src/core'

let schema: NexusGraphQLSchema

beforeAll(() => {
  schema = makeSchema({
    types: [
      queryField('user', {
        // @ts-ignore
        type: 'User',
        args: {
          int: intArg(),
          bool: booleanArg(),
          float: floatArg(),
          id: idArg(),
          str: stringArg(),
        },
        resolve: () => ({ id: `User:1`, name: 'Test User' }),
      }),
      objectType({
        name: 'User',
        definition(t) {
          t.id('id')
          t.string('name')
        },
      }),
    ],
    outputs: false,
    shouldGenerateArtifacts: false,
  })
})

it('can be implemented by object types', async () => {
  expect(
    await graphql({
      schema,
      source: `
        {
          user(int: 1, bool: true, float: 123.45, str: "Test") {
            id
            name
          }
        }
      `,
    })
  ).toMatchSnapshot()
})

it('throws if the arg is not provided to the type', async () => {
  // @ts-ignore
  expect(() => arg({ type: null })).toThrowErrorMatchingSnapshot()
})