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100 lines
2.5 KiB
JavaScript
100 lines
2.5 KiB
JavaScript
/**
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* @license
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* Copyright 2019 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @fileoverview A mocha test runner that mimics the behaviour of
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* goog.testing.junit
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* @author samelh@google.com (Sam El-Husseini)
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*/
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'use strict';
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/**
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* Setup mocha
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*/
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mocha.setup({
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ui: 'tdd'
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});
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// Add mocha div
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var mochaDiv = document.createElement('div');
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mochaDiv.id = 'mocha';
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document.body.appendChild(mochaDiv);
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var mochaCss = document.createElement('link');
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mochaCss.setAttribute('href', 'https://unpkg.com/mocha@5.2.0/mocha.css');
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mochaCss.setAttribute('rel', 'stylesheet');
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document.head.appendChild(mochaCss);
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/**
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* Begin by discovering all of the test methods, test methods are any
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* function on the window object that begins with the prefix `test`
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*/
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var allMethods = Object.getOwnPropertyNames(window);
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var allTests = [];
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for (var i = 0, method; i < allMethods.length, method = allMethods[i]; i++) {
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if (method.indexOf('test') === 0 && method !== 'test' &&
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typeof window[method] === 'function') {
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allTests.push(method);
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}
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}
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/**
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* Split test methods into various suites by grouping them based on the
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* test name. Tests the begin with the same prefix are grouped together
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* into a suite.
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*/
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var suites = {};
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for (var i = 0, method; i < allTests.length, method = allTests[i]; i++) {
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var testName = method.substr(5);
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var underscore = testName.indexOf('_');
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var suiteName = underscore > -1 ? testName.substr(0, underscore) : 'test';
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if (!suites.hasOwnProperty(suiteName)) {
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suites[suiteName] = [];
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}
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suites[suiteName].push(method);
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}
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/**
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* Setup chai fail method
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*/
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function fail() {
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chai.fail();
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}
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/**
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* Wrap all unit tests into mocha test cases. Slot them into the different
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* suite groups that we found.
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*/
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suite('jsunit tests', function() {
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for (var i = 0, suiteKeys = Object.keys(suites), suiteName;
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i < suiteKeys.length, suiteName = suiteKeys[i]; i++) {
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suite(suiteName, function() {
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for (var j = 0, tests = suites[suiteName], method;
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j < tests.length, method = tests[j]; j++) {
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test(method, function() {
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window[this.test.title]();
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});
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}
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});
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}
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});
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/**
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* Create a div for failure results, and run the mocha tests.
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*/
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var failureDiv = document.createElement('div');
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failureDiv.id = 'failureCount';
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failureDiv.style = 'display:none';
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failureDiv.setAttribute('tests_failed', 'unset');
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document.body.appendChild(failureDiv);
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mocha.run(function(failures) {
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failureDiv.setAttribute('tests_failed', failures);
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});
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