dataSources not coming through on Jest Tests

General
1

My contextValues / dataSources don’t seem to be coming through on my jest tests. When I console.log in the actual resolver, I see the dataSource, but the expect returns null. Also, aside – is it always required to assert a single king in order to retrieve the data? This is strange.

Here is my Test Server:

const schema = makeExecutableSchema({
  resolvers,
  resolverValidationOptions: { requireResolversForResolveType: 'ignore' },
  typeDefs,
});

interface ServerContext {
  token?: String;
  dataSources: MockedDataSourcesTypes;
}

export const apolloTestServer = new ApolloServer<ServerContext>({
  schema,
});

Here is a Query resolver function

  geThingById: async (_, { id }, { dataSources }) => {
     const { data } = await dataSources.thing.getThing(id);
     console.log('DATA -- this returns with dataSources', data, dataSources);
     return data;
  },

Here is my test:

  describe('getThing', () => {
    it('return the correct query response', async () => {
      const { body } = await apolloTestServer.executeOperation(
        { query: queries.geThingById },
        { contextValue: { dataSources: mockedDataSources } }
      );
      assert(body.kind === 'single');
      expect(body.singleResult).toMatchObject({
        errors: undefined,
        data: {
          geThingById: {...myData}
        }
      });
    });
  });

The console returns well, but data.getThing is null. Wondering if I’m missing something