Add split tab unit test

.eslintignore

@@ -9,3 +9,4 @@ website/
 scripts
 packages/docusaurus-1.x/lib/core/metadata.js
 packages/docusaurus-1.x/lib/core/MetadataBlog.js
+packages/docusaurus-1.x/lib/core/__tests__/split-tab.test.js

package.json

@@ -15,6 +15,8 @@
   "devDependencies": {
     "babel-core": "^7.0.0-0",
     "babel-eslint": "8",
+    "enzyme": "^3.9.0",
+    "enzyme-adapter-react-16": "^1.12.1",
     "eslint": "4.x",
     "eslint-config-airbnb": "17.1.0",
     "eslint-config-prettier": "^2.9.0",

packages/docusaurus-1.x/lib/core/__tests__/__fixtures__/website/i18n/en.json

@@ -0,0 +1,10 @@
+{
+  "_comment": "This file is auto-generated by write-translations.js",
+  "localized-strings": {
+  },
+  "pages-strings": {
+    "Help Translate|recruit community translators for your project": "Help Us Translate",
+    "Edit this Doc|recruitment message asking to edit the doc source": "Edit",
+    "Translate this Doc|recruitment message asking to translate the docs": "Translate"
+  }
+}

packages/docusaurus-1.x/lib/core/__tests__/__fixtures__/website/siteConfig.js

@@ -0,0 +1,64 @@
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/* List of projects/orgs using your project for the users page */
+
+const siteConfig = {
+  title: 'Docusaurus',
+  tagline: 'Easy to Maintain Open Source Documentation Websites',
+  url: 'https://docusaurus.io',
+  baseUrl: '/',
+  organizationName: 'facebook',
+  projectName: 'Docusaurus',
+  cname: 'docusaurus.io',
+  noIndex: false,
+  editUrl: 'https://github.com/facebook/docusaurus/edit/master/docs/',
+  headerLinks: [],
+  headerIcon: 'img/docusaurus.svg',
+  footerIcon: 'img/docusaurus_monochrome.svg',
+  favicon: 'img/docusaurus.ico',
+  algolia: {
+    apiKey: '3eb9507824b8be89e7a199ecaa1a9d2c',
+    indexName: 'docusaurus',
+    algoliaOptions: {
+      facetFilters: ['language:LANGUAGE', 'version:VERSION'],
+    },
+  },
+  colors: {
+    primaryColor: '#2E8555',
+    secondaryColor: '#205C3B',
+  },
+  translationRecruitingLink: 'https://crowdin.com/project/docusaurus',
+  copyright: `Copyright © ${new Date().getFullYear()} Facebook Inc.`,
+  usePrism: ['jsx'],
+  highlight: {
+    theme: 'atom-one-dark',
+  },
+  scripts: [
+    'https://buttons.github.io/buttons.js',
+    'https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.0/clipboard.min.js',
+    '/js/code-blocks-buttons.js',
+  ],
+  gaTrackingId: 'UA-44373548-31',
+  facebookAppId: '199138890728411',
+  facebookComments: true,
+  twitter: 'true',
+  twitterUsername: 'docusaurus',
+  ogImage: 'img/docusaurus.png',
+  twitterImage: 'img/docusaurus.png',
+  onPageNav: 'separate',
+  cleanUrl: true,
+  scrollToTop: true,
+  scrollToTopOptions: {
+    zIndex: 100,
+  },
+  enableUpdateTime: true,
+  enableUpdateBy: true,
+  docsSideNavCollapsible: true,
+};
+
+module.exports = siteConfig;

packages/docusaurus-1.x/lib/core/__tests__/split-tab.test.js

@@ -0,0 +1,93 @@
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @jest-environment jsdom
+ */
+process.cwd = () => `${__dirname}/__fixtures__/website`;
+
+const React = require('react');
+const {configure, mount} = require('enzyme');
+const Adapter = require('enzyme-adapter-react-16');
+const Doc = require('../Doc.js');
+
+configure({adapter: new Adapter()});
+
+describe('when code tabs are used correctly', () => {
+  let props;
+  let mountedDoc;
+  const docPage = () => {
+    if (!mountedDoc) {
+      mountedDoc = mount(<Doc {...props} />);
+    }
+    return mountedDoc;
+  };
+  beforeEach(() => {
+    props = {
+      content: `
+<!--DOCUSAURUS_CODE_TABS-->
+<!--JavaScript-->
+\`\`\`js
+console.log('Hello, world!');
+\`\`\`
+<!--Python-->
+\`\`\`py
+print('Hello, world!')
+\`\`\`
+
+<!--C-->
+\`\`\`C
+#include <stdio.h>
+
+int main() {
+   printf("Hello World!");
+   return 0;
+}
+\`\`\`
+
+<!--Pascal-->
+\`\`\`Pascal
+program HelloWorld;
+begin
+  WriteLn('Hello, world!');
+end.
+\`\`\`
+
+<!--END_DOCUSAURUS_CODE_TABS-->
+      `,
+      metadata: {},
+      config: {},
+    };
+    mountedDoc = undefined;
+  });
+  it('renders tabs correctly', () => {
+    const node = docPage().getDOMNode();
+    const firstTab = node.querySelector('[data-tab$="-content-2"]').textContent;
+    expect('JavaScript').toEqual(firstTab);
+    const secondTab = node.querySelector('[data-tab$="-content-3"]')
+      .textContent;
+    expect('Python').toEqual(secondTab);
+    const thirdTab = node.querySelector('[data-tab$="-content-4"]').textContent;
+    expect('C').toEqual(thirdTab);
+    const fourthTab = node.querySelector('[data-tab$="-content-5"]')
+      .textContent;
+    expect('Pascal').toEqual(fourthTab);
+  });
+  it('renders content correctly', () => {
+    const node = docPage().getDOMNode();
+    const firstContent = node.querySelector('[id$="-content-7"]').textContent;
+    expect("console.log('Hello, world!');\n").toEqual(firstContent);
+    const secondContent = node.querySelector('[id$="-content-8"]').textContent;
+    expect("print('Hello, world!')\n").toEqual(secondContent);
+    const thirdContent = node.querySelector('[id$="-content-9"]').textContent;
+    expect(
+      '#include <stdio.h>int main() {   printf("Hello World!");   return 0;}\n',
+    ).toEqual(thirdContent);
+    const fourthContent = node.querySelector('[id$="-content-10"]').textContent;
+    expect("program HelloWorld;begin  WriteLn('Hello, world!');end.\n").toEqual(
+      fourthContent,
+    );
+  });
+});