| .. | |||||
| cli.js | |||||
| collect-files.js | |||||
| commands.js | |||||
| config.js | |||||
| index.js | |||||
| init.js | |||||
| node-flags.js | |||||
| one-and-dones.js | |||||
| options.js | |||||
| run-helpers.js | |||||
| run-option-metadata.js | |||||
| run.js | |||||
| watch-run.js |
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'use strict';
/**
* Main entry point for handling filesystem-based configuration,
* whether that's `mocha.opts` or a config file or `package.json` or whatever.
* @module
*/
const fs = require('fs');
const ansi = require('ansi-colors');
const yargsParser = require('yargs-parser');
const {types, aliases} = require('./run-option-metadata');
const {ONE_AND_DONE_ARGS} = require('./one-and-dones');
const mocharc = require('../mocharc.json');
const {list} = require('./run-helpers');
const {loadConfig, findConfig} = require('./config');
const findUp = require('find-up');
const {deprecate} = require('../utils');
const debug = require('debug')('mocha:cli:options');
const {isNodeFlag} = require('./node-flags');
/**
* The `yargs-parser` namespace
* @external yargsParser
* @see {@link https://npm.im/yargs-parser}
*/
/**
* An object returned by a configured `yargs-parser` representing arguments
* @memberof external:yargsParser
* @interface Arguments
*/
/**
* Base yargs parser configuration
* @private
*/
const YARGS_PARSER_CONFIG = {
'combine-arrays': true,
'short-option-groups': false,
'dot-notation': false
};
/**
* This is the config pulled from the `yargs` property of Mocha's
* `package.json`, but it also disables camel case expansion as to
* avoid outputting non-canonical keynames, as we need to do some
* lookups.
* @private
* @ignore
*/
const configuration = Object.assign({}, YARGS_PARSER_CONFIG, {
'camel-case-expansion': false
});
/**
* This is a really fancy way to:
* - ensure unique values for `array`-type options
* - use its array's last element for `boolean`/`number`/`string`- options given multiple times
* This is passed as the `coerce` option to `yargs-parser`
* @private
* @ignore
*/
const coerceOpts = Object.assign(
types.array.reduce(
(acc, arg) =>
Object.assign(acc, {[arg]: v => Array.from(new Set(list(v)))}),
{}
),
types.boolean
.concat(types.string, types.number)
.reduce(
(acc, arg) =>
Object.assign(acc, {[arg]: v => (Array.isArray(v) ? v.pop() : v)}),
{}
)
);
/**
* We do not have a case when multiple arguments are ever allowed after a flag
* (e.g., `--foo bar baz quux`), so we fix the number of arguments to 1 across
* the board of non-boolean options.
* This is passed as the `narg` option to `yargs-parser`
* @private
* @ignore
*/
const nargOpts = types.array
.concat(types.string, types.number)
.reduce((acc, arg) => Object.assign(acc, {[arg]: 1}), {});
/**
* Wrapper around `yargs-parser` which applies our settings
* @param {string|string[]} args - Arguments to parse
* @param {Object} defaultValues - Default values of mocharc.json
* @param {...Object} configObjects - `configObjects` for yargs-parser
* @private
* @ignore
*/
const parse = (args = [], defaultValues = {}, ...configObjects) => {
// save node-specific args for special handling.
// 1. when these args have a "=" they should be considered to have values
// 2. if they don't, they just boolean flags
// 3. to avoid explicitly defining the set of them, we tell yargs-parser they
// are ALL boolean flags.
// 4. we can then reapply the values after yargs-parser is done.
const nodeArgs = (Array.isArray(args) ? args : args.split(' ')).reduce(
(acc, arg) => {
const pair = arg.split('=');
let flag = pair[0];
if (isNodeFlag(flag, false)) {
flag = flag.replace(/^--?/, '');
return arg.includes('=')
? acc.concat([[flag, pair[1]]])
: acc.concat([[flag, true]]);
}
return acc;
},
[]
);
const result = yargsParser.detailed(args, {
configuration,
configObjects,
default: defaultValues,
coerce: coerceOpts,
narg: nargOpts,
alias: aliases,
string: types.string,
array: types.array,
number: types.number,
boolean: types.boolean.concat(nodeArgs.map(pair => pair[0]))
});
if (result.error) {
console.error(ansi.red(`Error: ${result.error.message}`));
process.exit(1);
}
// reapply "=" arg values from above
nodeArgs.forEach(([key, value]) => {
result.argv[key] = value;
});
return result.argv;
};
/**
* - Replaces comments with empty strings
* - Replaces escaped spaces (e.g., 'xxx\ yyy') with HTML space
* - Splits on whitespace, creating array of substrings
* - Filters empty string elements from array
* - Replaces any HTML space with space
* @summary Parses options read from run-control file.
* @private
* @param {string} content - Content read from run-control file.
* @returns {string[]} cmdline options (and associated arguments)
* @ignore
*/
const parseMochaOpts = content =>
content
.replace(/^#.*$/gm, '')
.replace(/\\\s/g, '%20')
.split(/\s/)
.filter(Boolean)
.map(value => value.replace(/%20/g, ' '));
/**
* Given filepath in `args.opts`, attempt to load and parse a `mocha.opts` file.
* @param {Object} [args] - Arguments object
* @param {string|boolean} [args.opts] - Filepath to mocha.opts; defaults to whatever's in `mocharc.opts`, or `false` to skip
* @returns {external:yargsParser.Arguments|void} If read, object containing parsed arguments
* @memberof module:lib/cli/options
* @see {@link /#mochaopts|mocha.opts}
* @public
*/
const loadMochaOpts = (args = {}) => {
let result;
let filepath = args.opts;
// /dev/null is backwards compat
if (filepath === false || filepath === '/dev/null') {
return result;
}
filepath = filepath || mocharc.opts;
result = {};
let mochaOpts;
try {
mochaOpts = fs.readFileSync(filepath, 'utf8');
debug(`read ${filepath}`);
} catch (err) {
if (args.opts) {
throw new Error(`Unable to read ${filepath}: ${err}`);
}
// ignore otherwise. we tried
debug(`No mocha.opts found at ${filepath}`);
}
// real args should override `mocha.opts` which should override defaults.
// if there's an exception to catch here, I'm not sure what it is.
// by attaching the `no-opts` arg, we avoid re-parsing of `mocha.opts`.
if (mochaOpts) {
deprecate(
'Configuration via mocha.opts is DEPRECATED and will be removed from a future version of Mocha. Use RC files or package.json instead.'
);
result = parse(parseMochaOpts(mochaOpts));
debug(`${filepath} parsed succesfully`);
}
return result;
};
module.exports.loadMochaOpts = loadMochaOpts;
/**
* Given path to config file in `args.config`, attempt to load & parse config file.
* @param {Object} [args] - Arguments object
* @param {string|boolean} [args.config] - Path to config file or `false` to skip
* @public
* @memberof module:lib/cli/options
* @returns {external:yargsParser.Arguments|void} Parsed config, or nothing if `args.config` is `false`
*/
const loadRc = (args = {}) => {
if (args.config !== false) {
const config = args.config || findConfig();
return config ? loadConfig(config) : {};
}
};
module.exports.loadRc = loadRc;
/**
* Given path to `package.json` in `args.package`, attempt to load config from `mocha` prop.
* @param {Object} [args] - Arguments object
* @param {string|boolean} [args.config] - Path to `package.json` or `false` to skip
* @public
* @memberof module:lib/cli/options
* @returns {external:yargsParser.Arguments|void} Parsed config, or nothing if `args.package` is `false`
*/
const loadPkgRc = (args = {}) => {
let result;
if (args.package === false) {
return result;
}
result = {};
const filepath = args.package || findUp.sync(mocharc.package);
if (filepath) {
try {
const pkg = JSON.parse(fs.readFileSync(filepath, 'utf8'));
if (pkg.mocha) {
debug(`'mocha' prop of package.json parsed:`, pkg.mocha);
result = pkg.mocha;
} else {
debug(`no config found in ${filepath}`);
}
} catch (err) {
if (args.package) {
throw new Error(`Unable to read/parse ${filepath}: ${err}`);
}
debug(`failed to read default package.json at ${filepath}; ignoring`);
}
}
return result;
};
module.exports.loadPkgRc = loadPkgRc;
/**
* Priority list:
*
* 1. Command-line args
* 2. RC file (`.mocharc.c?js`, `.mocharc.ya?ml`, `mocharc.json`)
* 3. `mocha` prop of `package.json`
* 4. `mocha.opts`
* 5. default configuration (`lib/mocharc.json`)
*
* If a {@link module:lib/cli/one-and-dones.ONE_AND_DONE_ARGS "one-and-done" option} is present in the `argv` array, no external config files will be read.
* @summary Parses options read from `mocha.opts`, `.mocharc.*` and `package.json`.
* @param {string|string[]} [argv] - Arguments to parse
* @public
* @memberof module:lib/cli/options
* @returns {external:yargsParser.Arguments} Parsed args from everything
*/
const loadOptions = (argv = []) => {
let args = parse(argv);
// short-circuit: look for a flag that would abort loading of mocha.opts
if (
Array.from(ONE_AND_DONE_ARGS).reduce(
(acc, arg) => acc || arg in args,
false
)
) {
return args;
}
const rcConfig = loadRc(args);
const pkgConfig = loadPkgRc(args);
const optsConfig = loadMochaOpts(args);
if (rcConfig) {
args.config = false;
args._ = args._.concat(rcConfig._ || []);
}
if (pkgConfig) {
args.package = false;
args._ = args._.concat(pkgConfig._ || []);
}
if (optsConfig) {
args.opts = false;
args._ = args._.concat(optsConfig._ || []);
}
args = parse(
args._,
mocharc,
args,
rcConfig || {},
pkgConfig || {},
optsConfig || {}
);
// recombine positional arguments and "spec"
if (args.spec) {
args._ = args._.concat(args.spec);
delete args.spec;
}
// make unique
args._ = Array.from(new Set(args._));
return args;
};
module.exports.loadOptions = loadOptions;
module.exports.YARGS_PARSER_CONFIG = YARGS_PARSER_CONFIG;
| .. | |||||
| cli.js | |||||
| collect-files.js | |||||
| commands.js | |||||
| config.js | |||||
| index.js | |||||
| init.js | |||||
| node-flags.js | |||||
| one-and-dones.js | |||||
| options.js | |||||
| run-helpers.js | |||||
| run-option-metadata.js | |||||
| run.js | |||||
| watch-run.js |