'use strict';
var EventEmitter = require('events').EventEmitter;
var Pending = require('./pending');
var debug = require('debug')('mocha:runnable');
var milliseconds = require('ms');
var utils = require('./utils');
const {
createInvalidExceptionError,
createMultipleDoneError,
createTimeoutError
} = require('./errors');
/**
* Save timer references to avoid Sinon interfering (see GH-237).
* @private
*/
var Date = global.Date;
var setTimeout = global.setTimeout;
var clearTimeout = global.clearTimeout;
var toString = Object.prototype.toString;
module.exports = Runnable;
/**
* Initialize a new `Runnable` with the given `title` and callback `fn`.
*
* @class
* @extends external:EventEmitter
* @public
* @param {String} title
* @param {Function} fn
*/
function Runnable(title, fn) {
this.title = title;
this.fn = fn;
this.body = (fn || '').toString();
this.async = fn && fn.length;
this.sync = !this.async;
this._timeout = 2000;
this._slow = 75;
this._retries = -1;
utils.assignNewMochaID(this);
Object.defineProperty(this, 'id', {
get() {
return utils.getMochaID(this);
}
});
this.reset();
}
/**
* Inherit from `EventEmitter.prototype`.
*/
utils.inherits(Runnable, EventEmitter);
/**
* Resets the state initially or for a next run.
*/
Runnable.prototype.reset = function () {
this.timedOut = false;
this._currentRetry = 0;
this.pending = false;
delete this.state;
delete this.err;
};
/**
* Get current timeout value in msecs.
*
* @private
* @returns {number} current timeout threshold value
*/
/**
* @summary
* Set timeout threshold value (msecs).
*
* @description
* A string argument can use shorthand (e.g., "2s") and will be converted.
* The value will be clamped to range [<code>0</code>, <code>2^<sup>31</sup>-1</code>].
* If clamped value matches either range endpoint, timeouts will be disabled.
*
* @private
* @see {@link https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/setTimeout#Maximum_delay_value}
* @param {number|string} ms - Timeout threshold value.
* @returns {Runnable} this
* @chainable
*/
Runnable.prototype.timeout = function (ms) {
if (!arguments.length) {
return this._timeout;
}
if (typeof ms === 'string') {
ms = milliseconds(ms);
}
// Clamp to range
var INT_MAX = Math.pow(2, 31) - 1;
var range = [0, INT_MAX];
ms = utils.clamp(ms, range);
// see #1652 for reasoning
if (ms === range[0] || ms === range[1]) {
this._timeout = 0;
} else {
this._timeout = ms;
}
debug('timeout %d', this._timeout);
if (this.timer) {
this.resetTimeout();
}
return this;
};
/**
* Set or get slow `ms`.
*
* @private
* @param {number|string} ms
* @return {Runnable|number} ms or Runnable instance.
*/
Runnable.prototype.slow = function (ms) {
if (!arguments.length || typeof ms === 'undefined') {
return this._slow;
}
if (typeof ms === 'string') {
ms = milliseconds(ms);
}
debug('slow %d', ms);
this._slow = ms;
return this;
};
/**
* Halt and mark as pending.
*
* @memberof Mocha.Runnable
* @public
*/
Runnable.prototype.skip = function () {
this.pending = true;
throw new Pending('sync skip; aborting execution');
};
/**
* Check if this runnable or its parent suite is marked as pending.
*
* @private
*/
Runnable.prototype.isPending = function () {
return this.pending || (this.parent && this.parent.isPending());
};
/**
* Return `true` if this Runnable has failed.
* @return {boolean}
* @private
*/
Runnable.prototype.isFailed = function () {
return !this.isPending() && this.state === constants.STATE_FAILED;
};
/**
* Return `true` if this Runnable has passed.
* @return {boolean}
* @private
*/
Runnable.prototype.isPassed = function () {
return !this.isPending() && this.state === constants.STATE_PASSED;
};
/**
* Set or get number of retries.
*
* @private
*/
Runnable.prototype.retries = function (n) {
if (!arguments.length) {
return this._retries;
}
this._retries = n;
};
/**
* Set or get current retry
*
* @private
*/
Runnable.prototype.currentRetry = function (n) {
if (!arguments.length) {
return this._currentRetry;
}
this._currentRetry = n;
};
/**
* Return the full title generated by recursively concatenating the parent's
* full title.
*
* @memberof Mocha.Runnable
* @public
* @return {string}
*/
Runnable.prototype.fullTitle = function () {
return this.titlePath().join(' ');
};
/**
* Return the title path generated by concatenating the parent's title path with the title.
*
* @memberof Mocha.Runnable
* @public
* @return {string}
*/
Runnable.prototype.titlePath = function () {
return this.parent.titlePath().concat([this.title]);
};
/**
* Clear the timeout.
*
* @private
*/
Runnable.prototype.clearTimeout = function () {
clearTimeout(this.timer);
};
/**
* Reset the timeout.
*
* @private
*/
Runnable.prototype.resetTimeout = function () {
var self = this;
var ms = this.timeout();
if (ms === 0) {
return;
}
this.clearTimeout();
this.timer = setTimeout(function () {
if (self.timeout() === 0) {
return;
}
self.callback(self._timeoutError(ms));
self.timedOut = true;
}, ms);
};
/**
* Set or get a list of whitelisted globals for this test run.
*
* @private
* @param {string[]} globals
*/
Runnable.prototype.globals = function (globals) {
if (!arguments.length) {
return this._allowedGlobals;
}
this._allowedGlobals = globals;
};
/**
* Run the test and invoke `fn(err)`.
*
* @param {Function} fn
* @private
*/
Runnable.prototype.run = function (fn) {
var self = this;
var start = new Date();
var ctx = this.ctx;
var finished;
var errorWasHandled = false;
if (this.isPending()) return fn();
// Sometimes the ctx exists, but it is not runnable
if (ctx && ctx.runnable) {
ctx.runnable(this);
}
// called multiple times
function multiple(err) {
if (errorWasHandled) {
return;
}
errorWasHandled = true;
self.emit('error', createMultipleDoneError(self, err));
}
// finished
function done(err) {
var ms = self.timeout();
if (self.timedOut) {
return;
}
if (finished) {
return multiple(err);
}
self.clearTimeout();
self.duration = new Date() - start;
finished = true;
if (!err && self.duration > ms && ms > 0) {
err = self._timeoutError(ms);
}
fn(err);
}
// for .resetTimeout() and Runner#uncaught()
this.callback = done;
if (this.fn && typeof this.fn.call !== 'function') {
done(
new TypeError(
'A runnable must be passed a function as its second argument.'
)
);
return;
}
// explicit async with `done` argument
if (this.async) {
this.resetTimeout();
// allows skip() to be used in an explicit async context
this.skip = function asyncSkip() {
this.pending = true;
done();
// halt execution, the uncaught handler will ignore the failure.
throw new Pending('async skip; aborting execution');
};
try {
callFnAsync(this.fn);
} catch (err) {
// handles async runnables which actually run synchronously
errorWasHandled = true;
if (err instanceof Pending) {
return; // done() is already called in this.skip()
} else if (this.allowUncaught) {
throw err;
}
done(Runnable.toValueOrError(err));
}
return;
}
// sync or promise-returning
try {
callFn(this.fn);
} catch (err) {
errorWasHandled = true;
if (err instanceof Pending) {
return done();
} else if (this.allowUncaught) {
throw err;
}
done(Runnable.toValueOrError(err));
}
function callFn(fn) {
var result = fn.call(ctx);
if (result && typeof result.then === 'function') {
self.resetTimeout();
result.then(
function () {
done();
// Return null so libraries like bluebird do not warn about
// subsequently constructed Promises.
return null;
},
function (reason) {
done(reason || new Error('Promise rejected with no or falsy reason'));
}
);
} else {
if (self.asyncOnly) {
return done(
new Error(
'--async-only option in use without declaring `done()` or returning a promise'
)
);
}
done();
}
}
function callFnAsync(fn) {
var result = fn.call(ctx, function (err) {
if (err instanceof Error || toString.call(err) === '[object Error]') {
return done(err);
}
if (err) {
if (Object.prototype.toString.call(err) === '[object Object]') {
return done(
new Error('done() invoked with non-Error: ' + JSON.stringify(err))
);
}
return done(new Error('done() invoked with non-Error: ' + err));
}
if (result && utils.isPromise(result)) {
return done(
new Error(
'Resolution method is overspecified. Specify a callback *or* return a Promise; not both.'
)
);
}
done();
});
}
};
/**
* Instantiates a "timeout" error
*
* @param {number} ms - Timeout (in milliseconds)
* @returns {Error} a "timeout" error
* @private
*/
Runnable.prototype._timeoutError = function (ms) {
let msg = `Timeout of ${ms}ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves.`;
if (this.file) {
msg += ' (' + this.file + ')';
}
return createTimeoutError(msg, ms, this.file);
};
var constants = utils.defineConstants(
/**
* {@link Runnable}-related constants.
* @public
* @memberof Runnable
* @readonly
* @static
* @alias constants
* @enum {string}
*/
{
/**
* Value of `state` prop when a `Runnable` has failed
*/
STATE_FAILED: 'failed',
/**
* Value of `state` prop when a `Runnable` has passed
*/
STATE_PASSED: 'passed',
/**
* Value of `state` prop when a `Runnable` has been skipped by user
*/
STATE_PENDING: 'pending'
}
);
/**
* Given `value`, return identity if truthy, otherwise create an "invalid exception" error and return that.
* @param {*} [value] - Value to return, if present
* @returns {*|Error} `value`, otherwise an `Error`
* @private
*/
Runnable.toValueOrError = function (value) {
return (
value ||
createInvalidExceptionError(
'Runnable failed with falsy or undefined exception. Please throw an Error instead.',
value
)
);
};
Runnable.constants = constants;