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- 'use strict';
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
- exports.default = void 0;
- function fs() {
- const data = _interopRequireWildcard(require('graceful-fs'));
- fs = function () {
- return data;
- };
- return data;
- }
- function _jestHasteMap() {
- const data = _interopRequireDefault(require('jest-haste-map'));
- _jestHasteMap = function () {
- return data;
- };
- return data;
- }
- function _interopRequireDefault(obj) {
- return obj && obj.__esModule ? obj : {default: obj};
- }
- function _getRequireWildcardCache(nodeInterop) {
- if (typeof WeakMap !== 'function') return null;
- var cacheBabelInterop = new WeakMap();
- var cacheNodeInterop = new WeakMap();
- return (_getRequireWildcardCache = function (nodeInterop) {
- return nodeInterop ? cacheNodeInterop : cacheBabelInterop;
- })(nodeInterop);
- }
- function _interopRequireWildcard(obj, nodeInterop) {
- if (!nodeInterop && obj && obj.__esModule) {
- return obj;
- }
- if (obj === null || (typeof obj !== 'object' && typeof obj !== 'function')) {
- return {default: obj};
- }
- var cache = _getRequireWildcardCache(nodeInterop);
- if (cache && cache.has(obj)) {
- return cache.get(obj);
- }
- var newObj = {};
- var hasPropertyDescriptor =
- Object.defineProperty && Object.getOwnPropertyDescriptor;
- for (var key in obj) {
- if (key !== 'default' && Object.prototype.hasOwnProperty.call(obj, key)) {
- var desc = hasPropertyDescriptor
- ? Object.getOwnPropertyDescriptor(obj, key)
- : null;
- if (desc && (desc.get || desc.set)) {
- Object.defineProperty(newObj, key, desc);
- } else {
- newObj[key] = obj[key];
- }
- }
- }
- newObj.default = obj;
- if (cache) {
- cache.set(obj, newObj);
- }
- return newObj;
- }
- function _defineProperty(obj, key, value) {
- if (key in obj) {
- Object.defineProperty(obj, key, {
- value: value,
- enumerable: true,
- configurable: true,
- writable: true
- });
- } else {
- obj[key] = value;
- }
- return obj;
- }
- const FAIL = 0;
- const SUCCESS = 1;
- /**
- * The TestSequencer will ultimately decide which tests should run first.
- * It is responsible for storing and reading from a local cache
- * map that stores context information for a given test, such as how long it
- * took to run during the last run and if it has failed or not.
- * Such information is used on:
- * TestSequencer.sort(tests: Array<Test>)
- * to sort the order of the provided tests.
- *
- * After the results are collected,
- * TestSequencer.cacheResults(tests: Array<Test>, results: AggregatedResult)
- * is called to store/update this information on the cache map.
- */
- class TestSequencer {
- constructor() {
- _defineProperty(this, '_cache', new Map());
- }
- _getCachePath(context) {
- const {config} = context;
- const HasteMapClass = _jestHasteMap().default.getStatic(config);
- return HasteMapClass.getCacheFilePath(
- config.cacheDirectory,
- 'perf-cache-' + config.name
- );
- }
- _getCache(test) {
- const {context} = test;
- if (!this._cache.has(context) && context.config.cache) {
- const cachePath = this._getCachePath(context);
- if (fs().existsSync(cachePath)) {
- try {
- this._cache.set(
- context,
- JSON.parse(fs().readFileSync(cachePath, 'utf8'))
- );
- } catch {}
- }
- }
- let cache = this._cache.get(context);
- if (!cache) {
- cache = {};
- this._cache.set(context, cache);
- }
- return cache;
- }
- /**
- * Sorting tests is very important because it has a great impact on the
- * user-perceived responsiveness and speed of the test run.
- *
- * If such information is on cache, tests are sorted based on:
- * -> Has it failed during the last run ?
- * Since it's important to provide the most expected feedback as quickly
- * as possible.
- * -> How long it took to run ?
- * Because running long tests first is an effort to minimize worker idle
- * time at the end of a long test run.
- * And if that information is not available they are sorted based on file size
- * since big test files usually take longer to complete.
- *
- * Note that a possible improvement would be to analyse other information
- * from the file other than its size.
- *
- */
- sort(tests) {
- const stats = {};
- const fileSize = ({path, context: {hasteFS}}) =>
- stats[path] || (stats[path] = hasteFS.getSize(path) || 0);
- const hasFailed = (cache, test) =>
- cache[test.path] && cache[test.path][0] === FAIL;
- const time = (cache, test) => cache[test.path] && cache[test.path][1];
- tests.forEach(test => (test.duration = time(this._getCache(test), test)));
- return tests.sort((testA, testB) => {
- const cacheA = this._getCache(testA);
- const cacheB = this._getCache(testB);
- const failedA = hasFailed(cacheA, testA);
- const failedB = hasFailed(cacheB, testB);
- const hasTimeA = testA.duration != null;
- if (failedA !== failedB) {
- return failedA ? -1 : 1;
- } else if (hasTimeA != (testB.duration != null)) {
- // If only one of two tests has timing information, run it last
- return hasTimeA ? 1 : -1;
- } else if (testA.duration != null && testB.duration != null) {
- return testA.duration < testB.duration ? 1 : -1;
- } else {
- return fileSize(testA) < fileSize(testB) ? 1 : -1;
- }
- });
- }
- allFailedTests(tests) {
- const hasFailed = (cache, test) => {
- var _cache$test$path;
- return (
- ((_cache$test$path = cache[test.path]) === null ||
- _cache$test$path === void 0
- ? void 0
- : _cache$test$path[0]) === FAIL
- );
- };
- return this.sort(
- tests.filter(test => hasFailed(this._getCache(test), test))
- );
- }
- cacheResults(tests, results) {
- const map = Object.create(null);
- tests.forEach(test => (map[test.path] = test));
- results.testResults.forEach(testResult => {
- if (testResult && map[testResult.testFilePath] && !testResult.skipped) {
- const cache = this._getCache(map[testResult.testFilePath]);
- const perf = testResult.perfStats;
- cache[testResult.testFilePath] = [
- testResult.numFailingTests ? FAIL : SUCCESS,
- perf.runtime || 0
- ];
- }
- });
- this._cache.forEach((cache, context) =>
- fs().writeFileSync(this._getCachePath(context), JSON.stringify(cache))
- );
- }
- }
- exports.default = TestSequencer;
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