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node_modules/eslint-config-airbnb/test/.eslintrc

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+{
+  "rules": {
+    // disabled because I find it tedious to write tests while following this rule
+    "no-shadow": 0,
+
+    // tests uses `t` for tape
+    "id-length": [2, {"min": 2, "properties": "never", "exceptions": ["t"]}]
+  }
+}

node_modules/eslint-config-airbnb/test/requires.js

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+/* eslint strict: 0, global-require: 0 */
+
+'use strict';
+
+const test = require('tape');
+
+test('all entry points parse', (t) => {
+  t.doesNotThrow(() => require('..'), 'index does not throw');
+  t.doesNotThrow(() => require('../base'), 'base does not throw');
+  t.doesNotThrow(() => require('../legacy'), 'legacy does not throw');
+  t.doesNotThrow(() => require('../whitespace'), 'whitespace does not throw');
+  t.doesNotThrow(() => require('../hooks'), 'hooks does not throw');
+
+  t.end();
+});

node_modules/eslint-config-airbnb/test/test-base.js

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+import fs from 'fs';
+import path from 'path';
+import test from 'tape';
+
+const base = require('../base');
+
+const files = { base };
+
+fs.readdirSync(path.join(__dirname, '../rules')).forEach((name) => {
+  if (name === 'react.js' || name === 'react-a11y.js') {
+    return;
+  }
+
+  // eslint-disable-next-line import/no-dynamic-require
+  files[name] = require(`../rules/${name}`); // eslint-disable-line global-require
+});
+
+Object.keys(files).forEach((name) => {
+  const config = files[name];
+
+  test(`${name}: does not reference react`, (t) => {
+    t.plan(2);
+
+    // scan plugins for react and fail if it is found
+    const hasReactPlugin = Object.prototype.hasOwnProperty.call(config, 'plugins')
+      && config.plugins.indexOf('react') !== -1;
+    t.notOk(hasReactPlugin, 'there is no react plugin');
+
+    // scan rules for react/ and fail if any exist
+    const reactRuleIds = Object.keys(config.rules)
+      .filter((ruleId) => ruleId.indexOf('react/') === 0);
+    t.deepEquals(reactRuleIds, [], 'there are no react/ rules');
+  });
+});

node_modules/eslint-config-airbnb/test/test-react-order.js

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+import test from 'tape';
+import { CLIEngine, ESLint } from 'eslint';
+import eslintrc from '..';
+import reactRules from '../rules/react';
+import reactA11yRules from '../rules/react-a11y';
+
+const rules = {
+  // It is okay to import devDependencies in tests.
+  'import/no-extraneous-dependencies': [2, { devDependencies: true }],
+  // this doesn't matter for tests
+  'lines-between-class-members': 0,
+  // otherwise we need some junk in our fixture code
+  'react/no-unused-class-component-methods': 0,
+};
+const cli = new (CLIEngine || ESLint)({
+  useEslintrc: false,
+  baseConfig: eslintrc,
+  ...(CLIEngine ? { rules } : { overrideConfig: { rules } }),
+});
+
+async function lint(text) {
+  // @see https://eslint.org/docs/developer-guide/nodejs-api.html#executeonfiles
+  // @see https://eslint.org/docs/developer-guide/nodejs-api.html#executeontext
+  const linter = CLIEngine ? cli.executeOnText(text) : await cli.lintText(text);
+  return (CLIEngine ? linter.results : linter)[0];
+}
+
+function wrapComponent(body) {
+  return `\
+import React from 'react';
+
+export default class MyComponent extends React.Component {
+/* eslint no-empty-function: 0, class-methods-use-this: 0 */
+${body}}
+`;
+}
+
+test('validate react methods order', (t) => {
+  t.test('make sure our eslintrc has React and JSX linting dependencies', (t) => {
+    t.plan(2);
+    t.deepEqual(reactRules.plugins, ['react']);
+    t.deepEqual(reactA11yRules.plugins, ['jsx-a11y', 'react']);
+  });
+
+  t.test('passes a good component', async (t) => {
+    const result = await lint(wrapComponent(`
+  componentDidMount() {}
+  handleSubmit() {}
+  onButtonAClick() {}
+  setFoo() {}
+  getFoo() {}
+  setBar() {}
+  someMethod() {}
+  renderDogs() {}
+  render() { return <div />; }
+`));
+
+    t.notOk(result.warningCount, 'no warnings');
+    t.deepEquals(result.messages, [], 'no messages in results');
+    t.notOk(result.errorCount, 'no errors');
+  });
+
+  t.test('order: when random method is first', async (t) => {
+    const result = await lint(wrapComponent(`
+  someMethod() {}
+  componentDidMount() {}
+  setFoo() {}
+  getFoo() {}
+  setBar() {}
+  renderDogs() {}
+  render() { return <div />; }
+`));
+
+    t.ok(result.errorCount, 'fails');
+    t.deepEqual(result.messages.map((msg) => msg.ruleId), ['react/sort-comp'], 'fails due to sort');
+  });
+
+  t.test('order: when random method after lifecycle methods', async (t) => {
+    const result = await lint(wrapComponent(`
+  componentDidMount() {}
+  someMethod() {}
+  setFoo() {}
+  getFoo() {}
+  setBar() {}
+  renderDogs() {}
+  render() { return <div />; }
+`));
+
+    t.ok(result.errorCount, 'fails');
+    t.deepEqual(result.messages.map((msg) => msg.ruleId), ['react/sort-comp'], 'fails due to sort');
+  });
+
+  t.test('order: when handler method with `handle` prefix after method with `on` prefix', async (t) => {
+    const result = await lint(wrapComponent(`
+  componentDidMount() {}
+  onButtonAClick() {}
+  handleSubmit() {}
+  setFoo() {}
+  getFoo() {}
+  render() { return <div />; }
+`));
+
+    t.ok(result.errorCount, 'fails');
+    t.deepEqual(result.messages.map((msg) => msg.ruleId), ['react/sort-comp'], 'fails due to sort');
+  });
+
+  t.test('order: when lifecycle methods after event handler methods', async (t) => {
+    const result = await lint(wrapComponent(`
+  handleSubmit() {}
+  componentDidMount() {}
+  setFoo() {}
+  getFoo() {}
+  render() { return <div />; }
+`));
+
+    t.ok(result.errorCount, 'fails');
+    t.deepEqual(result.messages.map((msg) => msg.ruleId), ['react/sort-comp'], 'fails due to sort');
+  });
+
+  t.test('order: when event handler methods after getters and setters', async (t) => {
+    const result = await lint(wrapComponent(`
+  componentDidMount() {}
+  setFoo() {}
+  getFoo() {}
+  handleSubmit() {}
+  render() { return <div />; }
+`));
+
+    t.ok(result.errorCount, 'fails');
+    t.deepEqual(result.messages.map((msg) => msg.ruleId), ['react/sort-comp'], 'fails due to sort');
+  });
+});