Added mocha example

adding eslint and nyc coverage

cleaned up eslint errors

use airbnb preset and fix .eslintrc

removed unused dependencies

removed unused eslint rules

use chai expect

Author: jsmey

packages/enzyme-example-mocha/.babelrc

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+{
+  "presets": ["airbnb"]
+}

packages/enzyme-example-mocha/.eslintrc

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+{
+  "extends": "airbnb",
+  "root": true,
+  "env": {
+    "node": true,
+    "mocha": true
+  }
+}

packages/enzyme-example-mocha/.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+
+# Dependency directory
+node_modules
+
+# Optional npm cache directory
+.npm
+
+# Optional REPL history
+.node_repl_history
+
+# Coverage
+.coverage
+.nyc_output

packages/enzyme-example-mocha/.nycrc

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+{
+  "reporter": [
+    "lcov",
+    "text-summary"
+  ],
+  "extension": [
+    ".jsx"
+  ]
+}

packages/enzyme-example-mocha/LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2016 Leland Richardson
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

packages/enzyme-example-mocha/README.md

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+# enzyme-example-mocha
+Example project with React + Enzyme + Mocha
+
+# npm scripts
+``` 
+npm test 
+
+```

packages/enzyme-example-mocha/package.json

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+{
+  "name": "enzyme-example-mocha",
+  "version": "0.1.0",
+  "description": "Example project with React + Enzyme + Mocha",
+  "scripts": {
+    "lint": "eslint ./src/**/*.js*",
+    "pretest": "npm run lint",
+    "test": "nyc mocha --require test/.setup.js --compilers js:babel-core/register src/*.spec.js*",
+    "test-watch": "npm test -- --watch"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/airbnb/enzyme.git"
+  },
+  "author": "Leland Richardson <[email protected]>",
+  "license": "MIT",
+  "homepage": "https://github.com/airbnb/enzyme.git",
+  "devDependencies": {
+    "babel": "^6.23.0",
+    "babel-core": "^6.26.0",
+    "babel-preset-airbnb": "^2.4.0",
+    "eslint": "^4.9.0",
+    "eslint-config-airbnb": "^16.1.0",
+    "eslint-plugin-import": "^2.8.0",
+    "eslint-plugin-jsx-a11y": "^6.0.2",
+    "eslint-plugin-react": "^7.4.0",
+    "jsdom": "^11.3.0",
+    "mocha": "^3.5.3",
+    "nyc": "^11.2.1"
+  },
+  "dependencies": {
+    "chai": "^3.5.0",
+    "enzyme": "^3.0.0",
+    "enzyme-adapter-react-16": "^1.0.0",
+    "react": "^16.0.0",
+    "react-dom": "^16.0.0"
+  }
+}

packages/enzyme-example-mocha/src/Foo.jsx

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+import React from 'react';
+
+const Foo = () => <div className="foo" />;
+
+export default Foo;

packages/enzyme-example-mocha/src/Foo.spec.jsx

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+import React from 'react';
+import Enzyme, { shallow, mount } from 'enzyme';
+import Adapter from 'enzyme-adapter-react-16';
+import { expect } from 'chai';
+import Foo from '../src/Foo';
+
+Enzyme.configure({ adapter: new Adapter() });
+
+describe('A suite', () => {
+  it('contains spec with an expectation', () => {
+    expect(shallow(<Foo />).contains(<div className="foo" />)).to.equal(true);
+  });
+
+  it('contains spec with an expectation', () => {
+    expect(shallow(<Foo />).is('.foo')).to.equal(true);
+  });
+
+  it('contains spec with an expectation', () => {
+    expect(mount(<Foo />).find('.foo').length).to.equal(1);
+  });
+});

packages/enzyme-example-mocha/test/.setup.js

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+import { JSDOM } from 'jsdom';
+import { expect } from 'chai';
+const jsdom = new JSDOM('<!doctype html><html><body></body></html>');
+const { window } = jsdom;
+
+function copyProps(src, target) {
+  const props = Object.getOwnPropertyNames(src)
+    .filter(prop => typeof target[prop] === 'undefined')
+    .map(prop => Object.getOwnPropertyDescriptor(src, prop));
+  Object.defineProperties(target, props);
+}
+
+global.expect = expect; 
+global.window = window;
+global.document = window.document;
+global.navigator = {
+  userAgent: 'node.js',
+};
+copyProps(window, global);