Add Jest Snapshot and configure CircleCi parallelism (#1029)

Example/.babelrc

@@ -1,3 +1,3 @@
 {
-  presets: ["react-native"]
+  "presets": ["react-native"]
 }

Example/.buckconfig

@@ -0,0 +1,6 @@
+
+[android]
+  target = Google Inc.:Google APIs:23
+
+[maven_repositories]
+  central = https://repo1.maven.org/maven2

Example/.flowconfig

@@ -1,63 +1,13 @@
 [ignore]
 
 # We fork some components by platform.
-.*/*.web.js
 .*/*.android.js
 
-# Some modules have their own node_modules with overlap
-.*/node_modules/node-haste/.*
+# Ignore templates with `@flow` in header
+.*/local-cli/generator.*
 
-# Ugh
-.*/node_modules/babel.*
-.*/node_modules/babylon.*
-.*/node_modules/invariant.*
-
-# Ignore react and fbjs where there are overlaps, but don't ignore
-# anything that react-native relies on
-.*/node_modules/fbjs/lib/Map.js
-.*/node_modules/fbjs/lib/fetch.js
-.*/node_modules/fbjs/lib/ExecutionEnvironment.js
-.*/node_modules/fbjs/lib/ErrorUtils.js
-
-# Flow has a built-in definition for the 'react' module which we prefer to use
-# over the currently-untyped source
-.*/node_modules/react/react.js
-.*/node_modules/react/lib/React.js
-.*/node_modules/react/lib/ReactDOM.js
-
-.*/__mocks__/.*
-.*/__tests__/.*
-
-.*/commoner/test/source/widget/share.js
-
-# Ignore commoner tests
-.*/node_modules/commoner/test/.*
-
-# See https://github.com/facebook/flow/issues/442
-.*/react-tools/node_modules/commoner/lib/reader.js
-
-# Ignore jest
-.*/node_modules/jest-cli/.*
-
-# Ignore Website
-.*/website/.*
-
-.*/node_modules/is-my-json-valid/test/.*\.json
-.*/node_modules/iconv-lite/encodings/tables/.*\.json
+# Ignore malformed json
 .*/node_modules/y18n/test/.*\.json
-.*/node_modules/spdx-license-ids/spdx-license-ids.json
-.*/node_modules/spdx-exceptions/index.json
-.*/node_modules/resolve/test/subdirs/node_modules/a/b/c/x.json
-.*/node_modules/resolve/lib/core.json
-.*/node_modules/jsonparse/samplejson/.*\.json
-.*/node_modules/json5/test/.*\.json
-.*/node_modules/ua-parser-js/test/.*\.json
-.*/node_modules/builtin-modules/builtin-modules.json
-.*/node_modules/binary-extensions/binary-extensions.json
-.*/node_modules/url-regex/tlds.json
-.*/node_modules/joi/.*\.json
-.*/node_modules/isemail/.*\.json
-.*/node_modules/tr46/.*\.json
 
 [include]
 
@@ -72,18 +22,20 @@ module.system=haste
 esproposal.class_static_fields=enable
 esproposal.class_instance_fields=enable
 
+experimental.strict_type_args=true
+
 munge_underscores=true
 
 module.name_mapper='^image![a-zA-Z0-9$_-]+$' -> 'GlobalImageStub'
-module.name_mapper='^[./a-zA-Z0-9$_-]+\.\(bmp\|gif\|jpg\|jpeg\|png\|psd\|svg\|webp\|m4v\|mov\|mp4\|mpeg\|mpg\|webm\|aac\|aiff\|caf\|m4a\|mp3\|wav\|html\)$' -> 'RelativeImageStub'
+module.name_mapper='^[./a-zA-Z0-9$_-]+\.\(bmp\|gif\|jpg\|jpeg\|png\|psd\|svg\|webp\|m4v\|mov\|mp4\|mpeg\|mpg\|webm\|aac\|aiff\|caf\|m4a\|mp3\|wav\|html\|pdf\)$' -> 'RelativeImageStub'
 
 suppress_type=$FlowIssue
 suppress_type=$FlowFixMe
 suppress_type=$FixMe
 
-suppress_comment=\\(.\\|\n\\)*\\$FlowFixMe\\($\\|[^(]\\|(\\(>=0\\.\\(2[0-2]\\|1[0-9]\\|[0-9]\\).[0-9]\\)? *\\(site=[a-z,_]*react_native[a-z,_]*\\)?)\\)
-suppress_comment=\\(.\\|\n\\)*\\$FlowIssue\\((\\(>=0\\.\\(2[0-2]\\|1[0-9]\\|[0-9]\\).[0-9]\\)? *\\(site=[a-z,_]*react_native[a-z,_]*\\)?)\\)?:? #[0-9]+
+suppress_comment=\\(.\\|\n\\)*\\$FlowFixMe\\($\\|[^(]\\|(\\(>=0\\.\\(2[0-7]\\|1[0-9]\\|[0-9]\\).[0-9]\\)? *\\(site=[a-z,_]*react_native[a-z,_]*\\)?)\\)
+suppress_comment=\\(.\\|\n\\)*\\$FlowIssue\\((\\(>=0\\.\\(2[0-7]\\|1[0-9]\\|[0-9]\\).[0-9]\\)? *\\(site=[a-z,_]*react_native[a-z,_]*\\)?)\\)?:? #[0-9]+
 suppress_comment=\\(.\\|\n\\)*\\$FlowFixedInNextDeploy
 
 [version]
-0.22.0
+^0.27.0

Example/.gitignore

@@ -24,6 +24,7 @@ project.xcworkspace
 
 # Android/IJ
 #
+*.iml
 .idea
 .gradle
 local.properties
@@ -32,3 +33,9 @@ local.properties
 #
 node_modules/
 npm-debug.log
+
+# BUCK
+buck-out/
+\.buckd/
+android/app/libs
+android/keystores/debug.keystore

Example/__tests__/.eslintrc.json

@@ -0,0 +1,5 @@
+{
+    "env": {
+        "jest": true
+    }
+}

Example/__tests__/Example-test.js

@@ -0,0 +1,16 @@
+import 'react-native';
+import React from 'react';
+
+import Example from '../Example';
+jest.unmock('Image');
+
+import renderer from 'react-test-renderer';
+
+describe('Example', () => {
+  it('renders correctly', () => {
+    const tree = renderer.create(
+      <Example />
+    ).toJSON();
+    expect(tree).toMatchSnapshot();
+  });
+});