[minor] Jest support

packages/electrode-archetype-react-app-dev/config/archetype.js

@@ -41,7 +41,8 @@ module.exports = {
       istanbul: `${configDir}/istanbul`,
       karma: `${configDir}/karma`,
       mocha: `${configDir}/mocha`,
-      webpack: `${configDir}/webpack`
+      webpack: `${configDir}/webpack`,
+      jest: `${configDir}/jest`
     },
     archetypeOptions.configPaths
   )

packages/electrode-archetype-react-app-dev/config/babel/babelrc-client

@@ -52,6 +52,9 @@
     "transform-runtime"
   ],
   "env": {
+    "test": {
+      "plugins": ["dynamic-import-node"]
+    },
     "production": {
       "plugins": [
         "babel-plugin-transform-react-constant-elements",

packages/electrode-archetype-react-app-dev/config/jest/__mocks__/file-mock.js

@@ -0,0 +1,3 @@
+// __mocks__/fileMock.js
+
+module.exports = "test-file-stub";

packages/electrode-archetype-react-app-dev/config/jest/__mocks__/framework-mock.js

@@ -0,0 +1,5 @@
+const Enzyme = require("enzyme");
+const EnzymeAdapter = require("enzyme-adapter-react-16");
+
+// Setup enzyme's react adapter
+Enzyme.configure({ adapter: new EnzymeAdapter() });

packages/electrode-archetype-react-app-dev/config/jest/jest.config.js

@@ -0,0 +1,31 @@
+const Path = require("path");
+const optionalRequire = require("optional-require")(require);
+
+const rootDir = process.cwd();
+const devPkgPath = Path.join(__dirname, "../..");
+
+const jestPath = Path.join(devPkgPath, "config", "jest");
+const fileMock = Path.join(jestPath, "__mocks__", "file-mock.js");
+const frameworkMock = Path.join(jestPath, "__mocks__", "framework-mock.js");
+
+const archetypeOptions = optionalRequire(Path.resolve("archetype", "config"), {
+  default: {}
+});
+
+const jestDefaultConfig = {
+  rootDir,
+  moduleFileExtensions: ["js", "jsx"],
+  moduleDirectories: ["node_modules", "src"],
+  moduleNameMapper: {
+    "\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": fileMock,
+    "\\.(css|less)$": "identity-obj-proxy"
+  },
+  setupTestFrameworkScriptFile: frameworkMock,
+  modulePathIgnorePatterns: ["<rootDir>/test"]
+};
+
+module.exports = Object.assign(
+  {},
+  jestDefaultConfig,
+  archetypeOptions.jest
+);

packages/electrode-archetype-react-app-dev/config/karma/entry.js

@@ -54,7 +54,7 @@ window.mocha.setup({
 // Use webpack to include all app code _except_ the entry point so we can get
 // code coverage in the bundle, whether tested or not.
 // NOTE: No need to specify src even in src mode since webpack should handle that already
-var srcReq = require.context("client", true, /^((?!app).)*\.jsx?$/);
+var srcReq = require.context("client", true, /^((?!app).)(!(spec|test))*\.(jsx|js)?$/);
 srcReq.keys().map(srcReq);
 
 // Use webpack to infer and `require` tests automatically only for test/client

packages/electrode-archetype-react-app-dev/package.json

@@ -25,6 +25,7 @@
     "babel-core": "^6.4.0",
     "babel-eslint": "^8.1.2",
     "babel-loader": "^7.0.0",
+    "babel-jest": "^22.4.3",
     "babel-plugin-i18n-id-hashing": "^2.1.0",
     "babel-plugin-lodash": "^3.1.3",
     "babel-plugin-minify-dead-code-elimination": "^0.1.7",
@@ -35,6 +36,7 @@
     "babel-plugin-transform-react-inline-elements": "^6.6.5",
     "babel-plugin-transform-react-remove-prop-types": "^0.4.8",
     "babel-plugin-transform-runtime": "^6.8.0",
+    "babel-plugin-dynamic-import-node": "^1.2.0",
     "babel-polyfill": "^6.5.0",
     "babel-preset-env": "^1.6.1",
     "babel-preset-react": "^6.3.13",
@@ -60,9 +62,11 @@
     "file-loader": "^0.11.1",
     "fs-extra": "^0.26.5",
     "glob": "^7.0.6",
+    "identity-obj-proxy": "^3.0.0",
     "isomorphic-loader": "^2.0.0",
     "isparta": "^4.0.0",
     "istanbul": "^0.4.5",
+    "jest": "^22.4.3",
     "json-loader": "^0.5.7",
     "jsonfile": "^2.2.2",
     "karma": "^1.7.1",

packages/electrode-archetype-react-app/arch-clap.js

@@ -6,6 +6,7 @@ const Fs = require("fs");
 const archetype = require("./config/archetype");
 const assert = require("assert");
 const requireAt = require("require-at");
+const glob = require("glob");
 
 assert(!archetype.noDev, "dev archetype is missing - development & build tasks not possible");
 
@@ -670,7 +671,8 @@ Individual .babelrc files were generated for you in src/client and src/server
     "test-cov": [
       ".build.test.client.babelrc",
       ".build.test.server.babelrc",
-      "test-frontend-cov",
+      "karma-test-frontend-cov",
+      "jest-test-frontend-cov",
       "test-server-cov"
     ],
     "test-dev": ["test-frontend-dev", "test-server-dev"],
@@ -688,11 +690,28 @@ Individual .babelrc files were generated for you in src/client and src/server
       `--colors`
     ),
 
-    "test-frontend-cov": mkCmd(
-      `karma start`,
-      quote(karmaConfig("karma.conf.coverage.js")),
-      `--colors`
-    ),
+    "karma-test-frontend-cov": () => {
+      if (shell.test("-d", "test")) {
+        logger.info("\nRunning Karma unit tests:\n");
+        return mkCmd(
+          `~$karma start`,
+          quote(karmaConfig("karma.conf.coverage.js")),
+          `--colors`
+        )
+      }
+      return undefined;
+    },
+    "jest-test-frontend-cov": () => {
+      const srcJestFiles = glob.sync(`${Path.resolve(AppMode.src.dir)}/**/\*.{test,spec}.{js,jsx}`);
+
+      if (shell.test("-d", "_test_") || srcJestFiles.length > 0) {
+        logger.info("\nRunning jest unit tests:\n");
+        return mkCmd(
+          `~$jest`,
+          `--config ${archetype.config.jest}/jest.config.js`
+        )
+      }
+    },
 
     "test-frontend-dev": () =>
       exec(`pgrep -fl "webpack-dev-server.*${archetype.webpack.testPort}"`)