84 lines
2.2 KiB
JavaScript
84 lines
2.2 KiB
JavaScript
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'use strict';
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/**
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* Provides a factory function for a {@link StatsCollector} object.
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* @module
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*/
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var constants = require('./runner').constants;
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var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
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var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;
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var EVENT_SUITE_BEGIN = constants.EVENT_SUITE_BEGIN;
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var EVENT_RUN_BEGIN = constants.EVENT_RUN_BEGIN;
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var EVENT_TEST_PENDING = constants.EVENT_TEST_PENDING;
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var EVENT_RUN_END = constants.EVENT_RUN_END;
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var EVENT_TEST_END = constants.EVENT_TEST_END;
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/**
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* Test statistics collector.
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*
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* @public
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* @typedef {Object} StatsCollector
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* @property {number} suites - integer count of suites run.
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* @property {number} tests - integer count of tests run.
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* @property {number} passes - integer count of passing tests.
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* @property {number} pending - integer count of pending tests.
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* @property {number} failures - integer count of failed tests.
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* @property {Date} start - time when testing began.
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* @property {Date} end - time when testing concluded.
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* @property {number} duration - number of msecs that testing took.
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*/
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var Date = global.Date;
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/**
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* Provides stats such as test duration, number of tests passed / failed etc., by listening for events emitted by `runner`.
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*
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* @private
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* @param {Runner} runner - Runner instance
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* @throws {TypeError} If falsy `runner`
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*/
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function createStatsCollector(runner) {
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/**
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* @type StatsCollector
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*/
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var stats = {
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suites: 0,
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tests: 0,
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passes: 0,
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pending: 0,
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failures: 0
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};
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if (!runner) {
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throw new TypeError('Missing runner argument');
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}
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runner.stats = stats;
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runner.once(EVENT_RUN_BEGIN, function() {
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stats.start = new Date();
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});
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runner.on(EVENT_SUITE_BEGIN, function(suite) {
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suite.root || stats.suites++;
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});
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runner.on(EVENT_TEST_PASS, function() {
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stats.passes++;
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});
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runner.on(EVENT_TEST_FAIL, function() {
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stats.failures++;
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});
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runner.on(EVENT_TEST_PENDING, function() {
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stats.pending++;
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});
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runner.on(EVENT_TEST_END, function() {
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stats.tests++;
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});
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runner.once(EVENT_RUN_END, function() {
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stats.end = new Date();
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stats.duration = stats.end - stats.start;
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});
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}
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module.exports = createStatsCollector;
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