Tests: Remove Mocha test runner

CONTRIBUTING.md

@@ -38,7 +38,7 @@ Gutenberg contains both PHP and JavaScript code, and encourages testing and code
 
 ### JavaScript Testing
 
-Tests for JavaScript use [Mocha](https://mochajs.org/) as the test runner and [Chai BDD](http://chaijs.com/api/bdd/) as an assertion library (with a [small variation](https://github.com/prodatakey/dirty-chai) on assertion properties). If needed, you can also use [Sinon](http://sinonjs.org/) for mocking and [Enzyme](https://github.com/airbnb/enzyme) for React component testing.
+Tests for JavaScript use [Jest](http://facebook.github.io/jest//) as the test runner. If needed, you can also use [Sinon](http://sinonjs.org/) for mocking and [Enzyme](https://github.com/airbnb/enzyme) for React component testing.
 
 Assuming you've followed the instructions above to install Node and project dependencies, tests can be run from the command-line with NPM:
 

components/form-token-field/test/index.js

@@ -179,11 +179,6 @@ maybeDescribe( 'FormTokenField', function() {
 		} );
 
 		it( 'should manage the selected suggestion based on both keyboard and mouse events', test( function() {
-			// We need a high timeout for Mocha here to accomodate Travis CI
-			if ( this.timeout ) {
-				this.timeout( 10000 );
-			}
-
 			setText( 'th' );
 			expect( getSuggestionsText() ).to.deep.equal( fixtures.matchingSuggestions.th );
 			expect( getSelectedSuggestion() ).to.equal( null );

package.json

@@ -65,11 +65,8 @@
     "expose-loader": "^0.7.3",
     "extract-text-webpack-plugin": "^2.1.0",
     "gettext-parser": "^1.2.2",
-    "glob": "^7.1.1",
     "jest": "~20.0.4",
     "jest-junit-reporter": "~1.1.0",
-    "jsdom": "^10.1.0",
-    "mocha": "^3.2.0",
     "node-sass": "^4.5.0",
     "pegjs": "^0.10.0",
     "pegjs-loader": "^0.5.1",
@@ -85,11 +82,9 @@
     "sinon-test": "^1.0.2",
     "style-loader": "^0.14.1",
     "tinymce": "^4.5.6",
-    "webpack": "^2.2.1",
-    "webpack-node-externals": "^1.5.4"
+    "webpack": "^2.2.1"
   },
   "scripts": {
-    "test-unit": "cross-env NODE_ENV=test webpack && mocha build --require bootstrap-test.js",
     "build": "cross-env BABEL_ENV=default NODE_ENV=production webpack",
     "gettext-strings": "cross-env BABEL_ENV=gettext webpack",
     "lint": "eslint . .storybook",
@@ -99,7 +94,7 @@
     "package-plugin": "./bin/build-plugin-zip.sh",
     "storybook": "start-storybook -p 6006",
     "build-storybook": "build-storybook",
-    "test-unit:jest": "jest",
+    "test-unit": "jest",
     "test-unit:coverage": "jest --coverage",
     "test-unit:watch": "jest --watch"
   },

webpack.config.js

@@ -1,8 +1,6 @@
 /**
  * External dependencies
  */
-
-const glob = require( 'glob' );
 const webpack = require( 'webpack' );
 const ExtractTextPlugin = require( 'extract-text-webpack-plugin' );
 
@@ -149,35 +147,6 @@ switch ( process.env.NODE_ENV ) {
 		config.plugins.push( new webpack.optimize.UglifyJsPlugin() );
 		break;
 
-	case 'test':
-		config.target = 'node';
-		config.node = {
-			__dirname: true,
-		};
-		config.module.rules = [
-			...entryPointNames.map( ( entry ) => ( {
-				test: require.resolve( './' + entry + '/index.js' ),
-				use: 'expose-loader?wp.' + entry,
-			} ) ),
-			...config.module.rules,
-		];
-		const testFiles = glob.sync(
-			'./{' + Object.keys( config.entry ).sort() + '}/**/test/*.js'
-		);
-		config.entry = [
-			...entryPointNames.map(
-				entryPointName => './' + entryPointName + '/index.js'
-			),
-			...testFiles.filter( f => /full-content\.js$/.test( f ) ),
-			...testFiles.filter( f => ! /full-content\.js$/.test( f ) ),
-		];
-		config.externals = [ require( 'webpack-node-externals' )() ];
-		config.output = {
-			filename: 'build/test.js',
-			path: __dirname,
-		};
-		break;
-
 	default:
 		config.devtool = 'source-map';
 }