Fails to return result when using only fragment spreads in query operation

[jonaskello]

Issue description

I'm trying to run this query against the swapi demo server with apollo-client:

query MyQuery {
  ...TheFilms
  ...ThePeople
}

fragment TheFilms on Root {
  allFilms {
    films {
      id
      title
    }
  }
}

fragment ThePeople on Root {
  allPeople {
    people {
      name
    }
  }
}

Intended outcome:

I expect apollo-client to return the same result as GraphiQL:

{
  "data": {
    "allFilms": {
      "films": [
        {
          "id": "ZmlsbXM6MQ==",
          "title": "A New Hope"
        },
        {
          "id": "ZmlsbXM6Mg==",
          "title": "The Empire Strikes Back"
        },
        ...
      ]
    },
    "allPeople": {
      "people": [
        {
          "name": "Luke Skywalker"
        },
        {
          "name": "C-3PO"
        },
        ...
      ]
    }
  }
}

Actual outcome:

apollo-client returns this:

{ data: {}, loading: false, networkStatus: 7, stale: false }

How to reproduce the issue:

Here is a repo with code that reproduces the issue.

Here is the code to reproduce:

async function main() {
  const ApolloClient = require("apollo-client").ApolloClient;
  const HttpLink = require("apollo-link-http").HttpLink;
  const InMemoryCache = require("apollo-cache-inmemory").InMemoryCache;
  const fetch = require("node-fetch");
  const gql = require("graphql-tag");

  const client = new ApolloClient({
    link: new HttpLink({
      uri: "http://graphql.org/swapi-graphql",
      fetch: fetch
    }),
    cache: new InMemoryCache()
  });

  const query = gql`
    query MyQuery {
      ...TheFilms
      ...ThePeople
    }

    fragment TheFilms on Root {
      allFilms {
        films {
          id
          title
        }
      }
    }

    fragment ThePeople on Root {
      allPeople {
        people {
          name
        }
      }
    }
  `;

  const result = await client.query({ query });
  console.log("result", result);
}

main();

Version

• apollo-client@2.0.4

[jaydenseric]

Related to #2512?

[jonaskello]

I found today that this only happens when you have a query operation that only has fragment spreads and nothing else. If I add something else, like a regular field, to the query operations selection set then it works and the spreads are also resolved.

For example this would work:

query MyQuery {
  ...TheFilms
  ...ThePeople
  allPlanets {
    totalCount
  }
}

fragment TheFilms on Root {
  allFilms {
    films {
      id
      title
    }
  }
}

fragment ThePeople on Root {
  allPeople {
    people {
      name
    }
  }
}

[hwillson]

This should have been fixed by #3507. Let us know if this is still a problem. Thanks!