Polyfill fetch() for tests

Summary: Per title. Required as Scribe is now being used for device tests.

Reviewed By: jknoxville, danielbuechele

Differential Revision: D13971892

fbshipit-source-id: 2df36d44d4e45a579cc9cca0d4cad9105ba8a383

package.json

@@ -53,6 +53,7 @@
     "flow-bin": "^0.91.0",
     "glob": "^7.1.2",
     "jest": "^23.6.0",
+    "jest-fetch-mock": "^2.1.0",
     "prettier": "1.13.6",
     "redux-mock-store": "^1.5.3"
   },

static/globalTestSetup.js

@@ -12,3 +12,5 @@ console.error = function(message) {
   );
   defaultConsoleError.apply(console, arguments);
 };
+
+global.fetch = require('jest-fetch-mock');

yarn.lock

@@ -1890,6 +1890,14 @@ cross-env@^5.2.0:
     cross-spawn "^6.0.5"
     is-windows "^1.0.0"
 
+cross-fetch@^2.2.2:
+  version "2.2.3"
+  resolved "https://registry.yarnpkg.com/cross-fetch/-/cross-fetch-2.2.3.tgz#e8a0b3c54598136e037f8650f8e823ccdfac198e"
+  integrity sha512-PrWWNH3yL2NYIb/7WF/5vFG3DCQiXDOVf8k3ijatbrtnwNuhMWLC7YF7uqf53tbTFDzHIUD8oITw4Bxt8ST3Nw==
+  dependencies:
+    node-fetch "2.1.2"
+    whatwg-fetch "2.0.4"
+
 cross-spawn@^5.0.1:
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-5.1.0.tgz#e8bd0efee58fcff6f8f94510a0a554bbfa235449"
@@ -4038,6 +4046,14 @@ jest-environment-node@^23.4.0:
     jest-mock "^23.2.0"
     jest-util "^23.4.0"
 
+jest-fetch-mock@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/jest-fetch-mock/-/jest-fetch-mock-2.1.0.tgz#49c16451b82f311158ec897e467d704e0cb118f9"
+  integrity sha512-jrTNlxDsZZCq6tMhdyH7gIbt4iDUHRr6C4Jp+kXItLaaaladOm9/wJjIwU3tCAEohbuW/7/naOSfg2A8H6/35g==
+  dependencies:
+    cross-fetch "^2.2.2"
+    promise-polyfill "^7.1.1"
+
 jest-get-type@^22.1.0:
   version "22.4.3"
   resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-22.4.3.tgz#e3a8504d8479342dd4420236b322869f18900ce4"
@@ -4901,6 +4917,11 @@ node-dir@0.1.8:
   resolved "https://registry.yarnpkg.com/node-dir/-/node-dir-0.1.8.tgz#55fb8deb699070707fb67f91a460f0448294c77d"
   integrity sha1-VfuN62mQcHB/tn+RpGDwRIKUx30=
 
+node-fetch@2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.1.2.tgz#ab884e8e7e57e38a944753cec706f788d1768bb5"
+  integrity sha1-q4hOjn5X44qUR1POxwb3iNF2i7U=
+
 node-fetch@^1.0.1:
   version "1.7.3"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.7.3.tgz#980f6f72d85211a5347c6b2bc18c5b84c3eb47ef"
@@ -5524,6 +5545,11 @@ progress@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/progress/-/progress-2.0.0.tgz#8a1be366bf8fc23db2bd23f10c6fe920b4389d1f"
 
+promise-polyfill@^7.1.1:
+  version "7.1.2"
+  resolved "https://registry.yarnpkg.com/promise-polyfill/-/promise-polyfill-7.1.2.tgz#ab05301d8c28536301622d69227632269a70ca3b"
+  integrity sha512-FuEc12/eKqqoRYIGBrUptCBRhobL19PS2U31vMNTfyck1FxPyMfgsXyW4Mav85y/ZN1hop3hOwRlUDok23oYfQ==
+
 promise-retry@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/promise-retry/-/promise-retry-1.1.1.tgz#6739e968e3051da20ce6497fb2b50f6911df3d6d"
@@ -7166,7 +7192,7 @@ whatwg-encoding@^1.0.1, whatwg-encoding@^1.0.3:
   dependencies:
     iconv-lite "0.4.23"
 
-whatwg-fetch@>=0.10.0:
+whatwg-fetch@2.0.4, whatwg-fetch@>=0.10.0:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-2.0.4.tgz#dde6a5df315f9d39991aa17621853d720b85566f"