Fix fetch mocking in Apollo test (#622)

* Fix fetch mocking in Apollo test

* Add babel-cli dev dep to Apollo example

* Remove node-fetch from ApolloProxy's dev deps

examples/apollo/package.json

@@ -23,5 +23,8 @@
     "react-cosmos-shared": "^3.6.1"
   },
   "xo": false,
-  "private": true
+  "private": true,
+  "devDependencies": {
+    "babel-cli": "^6.26.0"
+  }
 }

packages/react-cosmos-apollo-proxy/package.json

@@ -21,7 +21,6 @@
   "devDependencies": {
     "async-until": "^1.0.0",
     "fetch-mock": "^5.12.2",
-    "graphql-tag": "^2.8.0",
-    "node-fetch": "^2.0.0"
+    "graphql-tag": "^2.8.0"
   }
 }

packages/react-cosmos-apollo-proxy/src/__tests__/client.js

@@ -5,7 +5,6 @@ import { InMemoryCache, ID_KEY } from 'apollo-cache-inmemory';
 import { HttpLink } from 'apollo-link-http';
 import { graphql } from 'react-apollo';
 import gql from 'graphql-tag';
-import fetch from 'node-fetch';
 import fetchMock from 'fetch-mock';
 import until from 'async-until';
 import createApolloProxy from '../index';
@@ -43,7 +42,7 @@ const sampleFixture = {
 };
 
 // used under the hood by HttpLink
-global.fetch = fetch;
+global.fetch = fetchMock.fetchMock;
 
 // render the component fixture
 const LastProxy = ({ fixture }) => <fixture.component {...fixture.props} />;
@@ -96,8 +95,24 @@ describe('proxy not configured', () => {
 });
 
 describe('proxy configured with a client', () => {
+  const resolveWith = {
+    author: {
+      __typename: 'Author',
+      id: 1,
+      firstName: 'Jane Dough',
+      [ID_KEY]: 'Author:1'
+    }
+  };
   let client;
 
+  beforeAll(() => {
+    fetchMock.post('https://xyz', { data: resolveWith });
+  });
+
+  afterEach(() => {
+    fetchMock.reset();
+  });
+
   beforeEach(() => {
     client = new ApolloClient({
       cache: new InMemoryCache(),

yarn.lock

@@ -7239,10 +7239,6 @@ node-fetch@^1.0.1, node-fetch@^1.3.3:
     encoding "^0.1.11"
     is-stream "^1.0.1"
 
-node-fetch@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.0.0.tgz#982bba43ecd4f2922a29cc186a6bbb0bb73fcba6"
-
 node-int64@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/node-int64/-/node-int64-0.4.0.tgz#87a9065cdb355d3182d8f94ce11188b825c68a3b"