feat: support jest (#188)

Author: whxaxes

lib/loader/file_loader.js

@@ -122,7 +122,7 @@ class FileLoader {
   parse() {
     let files = this.options.match;
     if (!files) {
-      files = (process.env.EGG_TYPESCRIPT === 'true' && require.extensions['.ts'])
+      files = (process.env.EGG_TYPESCRIPT === 'true' && utils.extensions.includes('.ts'))
         ? [ '**/*.(js|ts)', '!**/*.d.ts' ]
         : [ '**/*.js' ];
     } else {

lib/utils/index.js

@@ -5,14 +5,24 @@ const is = require('is-type-of');
 const path = require('path');
 const fs = require('fs');
 const co = require('co');
+const extensions = Object.keys(require.extensions);
+/* istanbul ignore if */
+if (!extensions.length) {
+  // adapt for jest
+  extensions.push('.js', '.node', '.json');
+  if (process.env.EGG_TYPESCRIPT === 'true') {
+    extensions.push('.ts');
+  }
+}
 
 module.exports = {
+  extensions,
 
   loadFile(filepath) {
     try {
       // if not js module, just return content buffer
       const extname = path.extname(filepath);
-      if (extname && !require.extensions[extname]) {
+      if (extname && !extensions.includes(extname)) {
         return fs.readFileSync(filepath);
       }
       // require js module

package.json

@@ -50,6 +50,7 @@
     "egg-utils": "^2.4.1",
     "eslint": "^4.19.1",
     "eslint-config-egg": "^7.0.0",
+    "jest": "^23.6.0",
     "js-yaml": "^3.11.0",
     "mm": "^2.4.0",
     "mz-modules": "^2.1.0",

test/egg-ts.test.js

@@ -4,16 +4,19 @@ const mm = require('mm');
 const request = require('supertest');
 const assert = require('assert');
 const utils = require('./utils');
+const loaderUtil = require('../lib/utils');
 
 describe('test/egg-ts.test.js', () => {
   let app;
 
   beforeEach(() => {
     require.extensions['.ts'] = require.extensions['.js'];
+    loaderUtil.extensions.push('.ts');
   });
 
   afterEach(() => {
     mm.restore();
+    loaderUtil.extensions.splice(loaderUtil.extensions.indexOf('.ts'), 1);
     delete require.extensions['.ts'];
   });
 
@@ -99,10 +102,6 @@ describe('test/egg-ts.test.js', () => {
     });
   });
 
-  it('should support load ts file', async () => {
-
-  });
-
   it('should not load d.ts files while typescript was true', async () => {
     mm(process.env, 'EGG_TYPESCRIPT', 'true');
     app = utils.createApp('egg-ts-js');
@@ -133,12 +132,9 @@ describe('test/egg-ts.test.js', () => {
 
   it('should not load ts files while EGG_TYPESCRIPT was true but no extensions', async () => {
     mm(process.env, 'EGG_TYPESCRIPT', 'true');
-    delete require.extensions['.ts'];
+    mm(loaderUtil, 'extensions', [ '.js', '.json' ]);
     app = utils.createApp('egg-ts-js');
-
-    app.loader.loadApplicationExtend();
     app.loader.loadService();
-    assert(!app.appExtend);
     assert(app.serviceClasses.lord);
     assert(!app.serviceClasses.test);
   });

test/fixtures/egg-jest/__tests__/index.js

@@ -0,0 +1,15 @@
+'use strict';
+
+const path = require('path');
+const assert = require('assert');
+const EggApplication = require('../').Application;
+
+test('should works', async () => {
+  const app = new EggApplication({
+    baseDir: path.resolve(__dirname, '../'),
+    type: 'application',
+  });
+  app.loader.loadAll();
+  expect(!!app.Proxy).toBe(true);
+  expect(!!app.config.urllib.keepAlive).toBe(true);
+});

test/fixtures/egg-jest/app/extend/application.js

@@ -0,0 +1,7 @@
+'use strict';
+
+module.exports = {
+  get Proxy() {
+    return this.BaseContextClass;
+  },
+};

test/fixtures/egg-jest/app/middleware/status.js

@@ -0,0 +1,12 @@
+'use strict';
+
+module.exports = function() {
+  return (ctx, next) => {
+    if (ctx.path === '/status') {
+      ctx.body = 'egg status';
+      return;
+    }
+
+    return next();
+  };
+};

test/fixtures/egg-jest/config/config.default.js

@@ -0,0 +1,13 @@
+'use strict';
+
+module.exports = {
+  urllib: {
+    keepAlive: true,
+    keepAliveTimeout: 30000,
+    timeout: 30000,
+    maxSockets: Infinity,
+    maxFreeSockets: 256,
+  },
+
+  egg: 'egg',
+};

test/fixtures/egg-jest/config/config.unittest.js

@@ -0,0 +1,5 @@
+'use strict';
+
+module.exports = {
+  egg: 'egg-unittest',
+};

test/fixtures/egg-jest/config/plugin.js

@@ -0,0 +1,15 @@
+'use strict';
+
+const path = require('path');
+
+module.exports = {
+  session: {
+    enable: true,
+    path: path.join(__dirname, '../node_modules/session'),
+  },
+
+  hsfclient: {
+    enable: false,
+    path: path.join(__dirname, '../plugins/hsfclient'),
+  },
+};