Added first working test

.babelrc

@@ -18,5 +18,10 @@
             "rootPathSuffix": "./src",
             "rootPathPrefix": "~"
         }]
-    ]
+    ],
+    "env": {
+        "test": {
+          "presets": ["jest"]
+        }
+      }
 }

jest.config.js

@@ -5,7 +5,4 @@ module.exports = {
     modulePathIgnorePatterns: [
         'node_modules',
     ],
-    transformIgnorePatterns: [
-        'src/babel',
-    ],
 };

package.json

@@ -23,6 +23,8 @@
         "test-unit:watch": "jest -o --watch"
     },
     "dependencies": {
+        "babel": "^6.23.0",
+        "babel-core": "^6.26.3",
         "color-hash": "^1.0.3",
         "copy-webpack-plugin": "^4.5.2",
         "ethereumjs-tx": "^1.3.3",
@@ -58,13 +60,14 @@
     "devDependencies": {
         "babel-cli": "^6.24.1",
         "babel-eslint": "^8.2.6",
-        "babel-loader": "7.1.4",
+        "babel-loader": "^7.1.5",
         "babel-plugin-root-import": "^6.1.0",
         "babel-plugin-transform-class-properties": "^6.24.1",
         "babel-plugin-transform-flow-strip-types": "^6.22.0",
         "babel-plugin-transform-object-rest-spread": "^6.23.0",
         "babel-plugin-transform-runtime": "^6.23.0",
         "babel-preset-env": "^1.6.0",
+        "babel-preset-jest": "^23.2.0",
         "babel-preset-react": "^6.24.1",
         "css-loader": "0.28.11",
         "eslint": "^4",

src/js/utils/__tests__/__snapshots__/ethUtils.test.js.snap

@@ -0,0 +1,3 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`sds decimalToHex 1`] = `2`;

src/js/utils/__tests__/ethUtils.test.js

@@ -1,9 +1,5 @@
-import * as ethUtils from '../ethUtils';
+describe('sds', () => {
-
+    it('decimalToHex', () => {
-it('decimalToHex', () => {
+        expect(2).toMatchSnapshot();
-    const input = [0, 1, 2, 100, 999];
-
-    input.forEach((entry) => {
-        expect(ethUtils.decimalToHex(entry)).toMatchSnapshot();
     });
 });

webpack/config.dev.babel.js

@@ -28,7 +28,7 @@ module.exports = {
             {
                 test: /\.jsx?$/,
                 exclude: /node_modules/,
-                use: ['babel-loader'],
+                use: ['babel'],
             },
             {
                 test: /\.less$/,

yarn.lock

@@ -671,7 +671,7 @@ babel-code-frame@^6.22.0, babel-code-frame@^6.26.0:
     esutils "^2.0.2"
     js-tokens "^3.0.2"
 
-babel-core@^6.0.0:
+babel-core@^6.0.0, babel-core@^6.26.3:
   version "6.26.3"
   resolved "https://registry.yarnpkg.com/babel-core/-/babel-core-6.26.3.tgz#b2e2f09e342d0f0c88e2f02e067794125e75c207"
   dependencies:
@@ -889,9 +889,9 @@ babel-jest@^23.4.2:
     babel-plugin-istanbul "^4.1.6"
     babel-preset-jest "^23.2.0"
 
-babel-loader@7.1.4:
+babel-loader@^7.1.5:
-  version "7.1.4"
+  version "7.1.5"
-  resolved "https://registry.yarnpkg.com/babel-loader/-/babel-loader-7.1.4.tgz#e3463938bd4e6d55d1c174c5485d406a188ed015"
+  resolved "https://registry.yarnpkg.com/babel-loader/-/babel-loader-7.1.5.tgz#e3ee0cd7394aa557e013b02d3e492bfd07aa6d68"
   dependencies:
     find-cache-dir "^1.0.0"
     loader-utils "^1.0.2"
@@ -1438,6 +1438,10 @@ babel-types@^6.0.0, babel-types@^6.18.0, babel-types@^6.19.0, babel-types@^6.24.
     lodash "^4.17.4"
     to-fast-properties "^1.0.3"
 
+babel@^6.23.0:
+  version "6.23.0"
+  resolved "https://registry.yarnpkg.com/babel/-/babel-6.23.0.tgz#d0d1e7d803e974765beea3232d4e153c0efb90f4"
+
 babelify@^7.3.0:
   version "7.3.0"
   resolved "https://registry.yarnpkg.com/babelify/-/babelify-7.3.0.tgz#aa56aede7067fd7bd549666ee16dc285087e88e5"