lib/cli.js
'use strict'
const path = require('path')
const yargs = require('yargs')
const fs = require('graceful-fs')
const Server = require('./server')
const helper = require('./helper')
const constant = require('./constants')
const cfg = require('./config')
function processArgs (argv, options, fs, path) {
Object.getOwnPropertyNames(argv).forEach(function (name) {
let argumentValue = argv[name]
if (name !== '_' && name !== '$0') {
if (Array.isArray(argumentValue)) {
argumentValue = argumentValue.pop() // If the same argument is defined multiple times, override.
}
options[helper.dashToCamel(name)] = argumentValue
}
})
if (helper.isString(options.autoWatch)) {
options.autoWatch = options.autoWatch === 'true'
}
if (helper.isString(options.colors)) {
options.colors = options.colors === 'true'
}
if (helper.isString(options.failOnEmptyTestSuite)) {
options.failOnEmptyTestSuite = options.failOnEmptyTestSuite === 'true'
}
if (helper.isString(options.failOnFailingTestSuite)) {
options.failOnFailingTestSuite = options.failOnFailingTestSuite === 'true'
}
if (helper.isString(options.formatError)) {
let required
try {
required = require(options.formatError)
} catch (err) {
console.error('Could not require formatError: ' + options.formatError, err)
}
// support exports.formatError and module.exports = function
options.formatError = required.formatError || required
if (!helper.isFunction(options.formatError)) {
console.error(`Format error must be a function, got: ${typeof options.formatError}`)
process.exit(1)
}
}
if (helper.isString(options.logLevel)) {
const logConstant = constant['LOG_' + options.logLevel.toUpperCase()]
if (helper.isDefined(logConstant)) {
options.logLevel = logConstant
} else {
console.error('Log level must be one of disable, error, warn, info, or debug.')
process.exit(1)
}
} else if (helper.isDefined(options.logLevel)) {
console.error('Log level must be one of disable, error, warn, info, or debug.')
process.exit(1)
}
if (helper.isString(options.singleRun)) {
options.singleRun = options.singleRun === 'true'
}
if (helper.isString(options.browsers)) {
options.browsers = options.browsers.split(',')
}
if (options.reportSlowerThan === false) {
options.reportSlowerThan = 0
}
if (helper.isString(options.reporters)) {
options.reporters = options.reporters.split(',')
}
if (helper.isString(options.removedFiles)) {
options.removedFiles = options.removedFiles.split(',')
}
if (helper.isString(options.addedFiles)) {
options.addedFiles = options.addedFiles.split(',')
}
if (helper.isString(options.changedFiles)) {
options.changedFiles = options.changedFiles.split(',')
}
if (helper.isString(options.refresh)) {
options.refresh = options.refresh === 'true'
}
let configFile = argv.configFile
if (!configFile) {
// default config file (if exists)
if (fs.existsSync('./karma.conf.js')) {
configFile = './karma.conf.js'
} else if (fs.existsSync('./karma.conf.coffee')) {
configFile = './karma.conf.coffee'
} else if (fs.existsSync('./karma.conf.ts')) {
configFile = './karma.conf.ts'
} else if (fs.existsSync('./.config/karma.conf.js')) {
configFile = './.config/karma.conf.js'
} else if (fs.existsSync('./.config/karma.conf.coffee')) {
configFile = './.config/karma.conf.coffee'
} else if (fs.existsSync('./.config/karma.conf.ts')) {
configFile = './.config/karma.conf.ts'
}
}
options.configFile = configFile ? path.resolve(configFile) : null
if (options.cmd === 'run') {
options.clientArgs = parseClientArgs(process.argv)
}
return options
}
function parseClientArgs (argv) {
// extract any args after '--' as clientArgs
let clientArgs = []
argv = argv.slice(2)
const idx = argv.indexOf('--')
if (idx !== -1) {
clientArgs = argv.slice(idx + 1)
}
return clientArgs
}
// return only args that occur before `--`
function argsBeforeDoubleDash (argv) {
const idx = argv.indexOf('--')
return idx === -1 ? argv : argv.slice(0, idx)
}
function describeRoot () {
return yargs
.usage('Karma - Spectacular Test Runner for JavaScript.\n\n' +
'Run --help with particular command to see its description and available options.\n\n' +
'Usage:\n' +
' $0 <command>')
.command('init [configFile]', 'Initialize a config file.', describeInit)
.command('start [configFile]', 'Start the server / do a single run.', describeStart)
.command('run [configFile]', 'Trigger a test run.', describeRun)
.command('stop [configFile]', 'Stop the server.', describeStop)
.command('completion', 'Shell completion for karma.', describeCompletion)
.demandCommand(1, 'Command not specified.')
.strictCommands()
.describe('help', 'Print usage and options.')
.describe('version', 'Print current version.')
}
function describeInit (yargs) {
yargs
.usage('Karma - Spectacular Test Runner for JavaScript.\n\n' +
'INIT - Initialize a config file.\n\n' +
'Usage:\n' +
' $0 init [configFile]')
.strictCommands(false)
.version(false)
.positional('configFile', {
describe: 'Name of the generated Karma configuration file',
type: 'string'
})
.describe('log-level', '<disable | error | warn | info | debug> Level of logging.')
.describe('colors', 'Use colors when reporting and printing logs.')
.describe('no-colors', 'Do not use colors when reporting or printing logs.')
}
function describeStart (yargs) {
yargs
.usage('Karma - Spectacular Test Runner for JavaScript.\n\n' +
'START - Start the server / do a single run.\n\n' +
'Usage:\n' +
' $0 start [configFile]')
.strictCommands(false)
.version(false)
.positional('configFile', {
describe: 'Path to the Karma configuration file',
type: 'string'
})
.describe('port', '<integer> Port where the server is running.')
.describe('auto-watch', 'Auto watch source files and run on change.')
.describe('detached', 'Detach the server.')
.describe('no-auto-watch', 'Do not watch source files.')
.describe('log-level', '<disable | error | warn | info | debug> Level of logging.')
.describe('colors', 'Use colors when reporting and printing logs.')
.describe('no-colors', 'Do not use colors when reporting or printing logs.')
.describe('reporters', 'List of reporters (available: dots, progress, junit, growl, coverage).')
.describe('browsers', 'List of browsers to start (eg. --browsers Chrome,ChromeCanary,Firefox).')
.describe('capture-timeout', '<integer> Kill browser if does not capture in given time [ms].')
.describe('single-run', 'Run the test when browsers captured and exit.')
.describe('no-single-run', 'Disable single-run.')
.describe('report-slower-than', '<integer> Report tests that are slower than given time [ms].')
.describe('fail-on-empty-test-suite', 'Fail on empty test suite.')
.describe('no-fail-on-empty-test-suite', 'Do not fail on empty test suite.')
.describe('fail-on-failing-test-suite', 'Fail on failing test suite.')
.describe('no-fail-on-failing-test-suite', 'Do not fail on failing test suite.')
.option('format-error', {
describe: 'A path to a file that exports the format function.',
type: 'string'
})
}
function describeRun (yargs) {
yargs
.usage('Karma - Spectacular Test Runner for JavaScript.\n\n' +
'RUN - Run the tests (requires running server).\n\n' +
'Usage:\n' +
' $0 run [configFile] [-- <clientArgs>]')
.strictCommands(false)
.version(false)
.positional('configFile', {
describe: 'Path to the Karma configuration file',
type: 'string'
})
.describe('port', '<integer> Port where the server is listening.')
.describe('no-refresh', 'Do not re-glob all the patterns.')
.describe('fail-on-empty-test-suite', 'Fail on empty test suite.')
.describe('no-fail-on-empty-test-suite', 'Do not fail on empty test suite.')
.describe('log-level', '<disable | error | warn | info | debug> Level of logging.')
.describe('colors', 'Use colors when reporting and printing logs.')
.describe('no-colors', 'Do not use colors when reporting or printing logs.')
.option('removed-files', {
describe: 'Comma-separated paths to removed files. Useful when automatic file watching is disabled.',
type: 'string'
})
.option('changed-files', {
describe: 'Comma-separated paths to changed files. Useful when automatic file watching is disabled.',
type: 'string'
})
.option('added-files', {
describe: 'Comma-separated paths to added files. Useful when automatic file watching is disabled.',
type: 'string'
})
}
function describeStop (yargs) {
yargs
.usage('Karma - Spectacular Test Runner for JavaScript.\n\n' +
'STOP - Stop the server (requires running server).\n\n' +
'Usage:\n' +
' $0 stop [configFile]')
.strictCommands(false)
.version(false)
.positional('configFile', {
describe: 'Path to the Karma configuration file',
type: 'string'
})
.describe('port', '<integer> Port where the server is listening.')
.describe('log-level', '<disable | error | warn | info | debug> Level of logging.')
}
function describeCompletion (yargs) {
yargs
.usage('Karma - Spectacular Test Runner for JavaScript.\n\n' +
'COMPLETION - Bash/ZSH completion for karma.\n\n' +
'Installation:\n' +
' $0 completion >> ~/.bashrc')
.version(false)
}
function printRunnerProgress (data) {
process.stdout.write(data)
}
exports.process = () => {
const argv = describeRoot().parse(argsBeforeDoubleDash(process.argv.slice(2)))
return processArgs(argv, { cmd: argv._.shift() }, fs, path)
}
exports.run = async () => {
const cliOptions = exports.process()
const cmd = cliOptions.cmd // prevent config from changing the command
const cmdNeedsConfig = cmd === 'start' || cmd === 'run' || cmd === 'stop'
if (cmdNeedsConfig) {
let config
try {
config = await cfg.parseConfig(
cliOptions.configFile,
cliOptions,
{
promiseConfig: true,
throwErrors: true
}
)
} catch (karmaConfigException) {
// The reject reason/exception isn't used to log a message since
// parseConfig already calls a configured logger method with an almost
// identical message.
// The `run` function is a private application, not a public API. We don't
// need to worry about process.exit vs throw vs promise rejection here.
process.exit(1)
}
switch (cmd) {
case 'start': {
const server = new Server(config)
await server.start()
return server
}
case 'run':
return require('./runner')
.run(config)
.on('progress', printRunnerProgress)
case 'stop':
return require('./stopper').stop(config)
}
} else {
switch (cmd) {
case 'init':
return require('./init').init(cliOptions)
case 'completion':
return require('./completion').completion(cliOptions)
}
}
}
// just for testing
exports.processArgs = processArgs
exports.parseClientArgs = parseClientArgs
exports.argsBeforeDoubleDash = argsBeforeDoubleDash