Add jest and simple test

.babelrc

@@ -5,7 +5,7 @@
       "presets": ["react-hmre"]
     },
     "test": {
-      "presets": ["react", "es2015"],
+      "presets": ["env" ,"react", "es2015"],
       "plugins": [
         [ "babel-plugin-webpack-alias", { "config": "${PWD}/webpack.config.js" } ]
       ]

__mocks__/electron.js

@@ -0,0 +1,7 @@
+module.exports = {
+  require: jest.genMockFunction(),
+  match: jest.genMockFunction(),
+  app: jest.genMockFunction(),
+  remote: jest.genMockFunction(),
+  dialog: jest.genMockFunction()
+}

package.json

@@ -11,6 +11,7 @@
     "webpack": "webpack-dev-server --hot --inline --config webpack.config.js",
     "compile": "grunt compile",
     "test": "PWD=$(pwd) NODE_ENV=test ava --serial",
+    "jest": "jest",
     "fix": "npm run lint --fix",
     "lint": "eslint .",
     "dev-start": "concurrently --kill-others \"npm run webpack\" \"npm run hot\""
@@ -96,11 +97,13 @@
   "devDependencies": {
     "ava": "^0.25.0",
     "babel-core": "^6.14.0",
+    "babel-jest": "^22.4.3",
     "babel-loader": "^6.2.0",
     "babel-plugin-react-transform": "^2.0.0",
     "babel-plugin-webpack-alias": "^2.1.1",
+    "babel-preset-env": "^1.6.1",
     "babel-preset-es2015": "^6.3.13",
-    "babel-preset-react": "^6.3.13",
+    "babel-preset-react": "^6.24.1",
     "babel-preset-react-hmre": "^1.0.1",
     "babel-register": "^6.11.6",
     "browser-env": "^3.2.5",
@@ -120,6 +123,8 @@
     "grunt": "^0.4.5",
     "grunt-electron-installer": "2.1.0",
     "history": "^1.17.0",
+    "identity-obj-proxy": "^3.0.0",
+    "jest": "^22.4.3",
     "jsdom": "^9.4.2",
     "json-loader": "^0.5.4",
     "merge-stream": "^1.0.0",
@@ -130,6 +135,7 @@
     "react-input-autosize": "^1.1.0",
     "react-router": "^2.4.0",
     "react-router-redux": "^4.0.4",
+    "react-test-renderer": "^15.6.2",
     "standard": "^8.4.0",
     "style-loader": "^0.12.4",
     "stylus": "^0.52.4",
@@ -152,5 +158,11 @@
       "./tests/helpers/setup-electron-mock.js"
     ],
     "babel": "inherit"
+  },
+  "jest": {
+    "moduleNameMapper": {
+      "\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "<rootDir>/__mocks__/fileMock.js",
+      "\\.(css|less|styl)$": "identity-obj-proxy"
+    }
   }
 }

tests/components/TagListItem.snapshot.test.js

@@ -0,0 +1,9 @@
+import React from 'react'
+import renderer from 'react-test-renderer'
+import TagListItem from 'browser/components/TagListItem'
+
+it('TagListItem renders correctly', () => {
+  const tagListItem = renderer.create(<TagListItem name='Test' handleClickTagListItem={jest.fn()} />)
+
+  expect(tagListItem.toJSON()).toMatchSnapshot()
+})

tests/components/__snapshots__/TagListItem.snapshot.test.js.snap

@@ -0,0 +1,19 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`TagListItem renders correctly 1`] = `
+<button
+  className="tagList-item"
+  onClick={[Function]}
+>
+  <span
+    className="tagList-item-name"
+  >
+    # Test
+    <span
+      className="tagList-item-count"
+    >
+       
+    </span>
+  </span>
+</button>
+`;