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karma.conf.maker.js
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karma.conf.maker.js
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// This configures Karma, describing how to run the tests and where to output code coverage reports.
//
// For more information, see http://karma-runner.github.io/1.0/config/configuration-file.html
const babelConfig = require('./babelConfig.js');
var _ = require('lodash');
var webpackConf = require('./webpack.conf.js');
var karmaConstants = require('karma').constants;
function newWebpackConfig(codeCoverage, disableFeatures) {
// Make a clone here because we plan on mutating this object, and don't want parallel tasks to trample each other.
var webpackConfig = _.cloneDeep(webpackConf);
Object.assign(webpackConfig, {
mode: 'development',
devtool: 'inline-source-map',
});
delete webpackConfig.entry;
webpackConfig.module.rules
.flatMap((r) => r.use)
.filter((use) => use.loader === 'babel-loader')
.forEach((use) => {
use.options = babelConfig({test: true, disableFeatures});
});
if (codeCoverage) {
webpackConfig.module.rules.push({
enforce: 'post',
exclude: /(node_modules)|(test)|(integrationExamples)|(build)|polyfill.js|(src\/adapters\/analytics\/ga.js)/,
use: {
loader: '@jsdevtools/coverage-istanbul-loader',
options: { esModules: true }
},
test: /\.js$/
})
}
return webpackConfig;
}
function newPluginsArray(browserstack) {
var plugins = [
'karma-chrome-launcher',
'karma-coverage',
'karma-es5-shim',
'karma-mocha',
'karma-chai',
'karma-sinon',
'karma-sourcemap-loader',
'karma-spec-reporter',
'karma-webpack',
'karma-mocha-reporter'
];
if (browserstack) {
plugins.push('karma-browserstack-launcher');
}
plugins.push('karma-firefox-launcher');
plugins.push('karma-opera-launcher');
plugins.push('karma-safari-launcher');
plugins.push('karma-script-launcher');
plugins.push('karma-ie-launcher');
return plugins;
}
function setReporters(karmaConf, codeCoverage, browserstack) {
// In browserstack, the default 'progress' reporter floods the logs.
// The karma-spec-reporter reports failures more concisely
if (browserstack) {
karmaConf.reporters = ['spec'];
karmaConf.specReporter = {
maxLogLines: 100,
suppressErrorSummary: false,
suppressSkipped: false,
suppressPassed: true
};
}
if (codeCoverage) {
karmaConf.reporters.push('coverage');
karmaConf.coverageReporter = {
dir: 'build/coverage',
reporters: [
{ type: 'lcov', subdir: '.' }
]
};
}
}
function setBrowsers(karmaConf, browserstack) {
if (browserstack) {
karmaConf.browserStack = {
username: process.env.BROWSERSTACK_USERNAME,
accessKey: process.env.BROWSERSTACK_ACCESS_KEY,
build: 'Prebidjs Unit Tests ' + new Date().toLocaleString()
}
if (process.env.TRAVIS) {
karmaConf.browserStack.startTunnel = false;
karmaConf.browserStack.tunnelIdentifier = process.env.BROWSERSTACK_LOCAL_IDENTIFIER;
}
karmaConf.customLaunchers = require('./browsers.json');
karmaConf.browsers = Object.keys(karmaConf.customLaunchers);
} else {
var isDocker = require('is-docker')();
if (isDocker) {
karmaConf.customLaunchers = karmaConf.customLaunchers || {};
karmaConf.customLaunchers.ChromeCustom = {
base: 'ChromeHeadless',
// We must disable the Chrome sandbox when running Chrome inside Docker (Chrome's sandbox needs
// more permissions than Docker allows by default)
flags: ['--no-sandbox']
}
karmaConf.browsers = ['ChromeCustom'];
} else {
karmaConf.browsers = ['ChromeHeadless'];
}
}
}
module.exports = function(codeCoverage, browserstack, watchMode, file, disableFeatures) {
var webpackConfig = newWebpackConfig(codeCoverage, disableFeatures);
var plugins = newPluginsArray(browserstack);
var files = file ? ['test/test_deps.js', file] : ['test/test_index.js'];
// This file opens the /debug.html tab automatically.
// It has no real value unless you're running --watch, and intend to do some debugging in the browser.
if (watchMode) {
files.push('test/helpers/karma-init.js');
}
var config = {
// base path that will be used to resolve all patterns (eg. files, exclude)
basePath: './',
webpack: webpackConfig,
webpackMiddleware: {
stats: 'errors-only',
noInfo: true
},
// frameworks to use
// available frameworks: https://npmjs.org/browse/keyword/karma-adapter
frameworks: ['es5-shim', 'mocha', 'chai', 'sinon'],
files: files,
// preprocess matching files before serving them to the browser
// available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
preprocessors: {
'test/test_index.js': ['webpack', 'sourcemap']
},
// web server port
port: 9876,
// enable / disable colors in the output (reporters and logs)
colors: true,
// level of logging
// possible values: LOG_DISABLE || LOG_ERROR || LOG_WARN || LOG_INFO || LOG_DEBUG
logLevel: karmaConstants.LOG_INFO,
// enable / disable watching file and executing tests whenever any file changes
autoWatch: true,
reporters: ['mocha'],
client: {
mocha: {
timeout: 3000
}
},
mochaReporter: {
showDiff: true,
output: 'minimal'
},
// Continuous Integration mode
// if true, Karma captures browsers, runs the tests and exits
singleRun: !watchMode,
browserDisconnectTimeout: 3e5, // default 2000
browserNoActivityTimeout: 3e5, // default 10000
captureTimeout: 3e5, // default 60000,
browserDisconnectTolerance: 3,
concurrency: 6,
plugins: plugins
}
// To ensure that, we are able to run single spec file
// here we are adding preprocessors, when file is passed
if (file) {
config.files.forEach((file) => {
config.preprocessors[file] = ['webpack', 'sourcemap'];
});
delete config.preprocessors['test/test_index.js'];
}
setReporters(config, codeCoverage, browserstack);
setBrowsers(config, browserstack);
return config;
}