Implement aliasing for fields #26
Description
Relates to #11 and the discussion in PR #22
Aliasing of fields in forwarded queries does not appear to be supported out of the box.
Consider the following addition to the test cases in test/proxy.test.js. The first test cases passes, but the second two fail:
{
name: 'should federate a basic service with queries with aliases on fields',
services: [
{
schema: dedent`
type Query {
me: User
}
type User {
id: ID!
name: String!
address: String
}
`,
resolvers: {
Query: {
me: () => db.users[1]
},
User: {
address: () => 'Banbury'
}
}
}
],
queries: [
{
query: '{ me { userId: id, name } }',
expected: {
me: {
userId: '1', // returns the correct aliased field
name: 'Jimmy'
}
}
},
{
query: '{ me { id, firstName: name } }',
expected: {
me: {
userId: '1',
firstName: 'Jimmy' // returns null for entire me object
}
}
},
{
query: '{ me { id, location: address } }',
expected: {
me: {
id: '1',
location: 'Banbury' // returns null for location
}
}
}
]
}