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// Currently in sync with Node.js lib/assert.js
// https://github.com/nodejs/node/commit/2a51ae424a513ec9a6aa3466baa0cc1d55dd4f3b
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var _require = require('./internal/errors'),
_require$codes = _require.codes,
ERR_AMBIGUOUS_ARGUMENT = _require$codes.ERR_AMBIGUOUS_ARGUMENT,
ERR_INVALID_ARG_TYPE = _require$codes.ERR_INVALID_ARG_TYPE,
ERR_INVALID_ARG_VALUE = _require$codes.ERR_INVALID_ARG_VALUE,
ERR_INVALID_RETURN_VALUE = _require$codes.ERR_INVALID_RETURN_VALUE,
ERR_MISSING_ARGS = _require$codes.ERR_MISSING_ARGS;
var AssertionError = require('./internal/assert/assertion_error');
var _require2 = require('util/'),
inspect = _require2.inspect;
var _require$types = require('util/').types,
isPromise = _require$types.isPromise,
isRegExp = _require$types.isRegExp;
var objectAssign = Object.assign ? Object.assign : require('es6-object-assign').assign;
var objectIs = Object.is ? Object.is : require('object-is');
var errorCache = new Map();
var isDeepEqual;
var isDeepStrictEqual;
var parseExpressionAt;
var findNodeAround;
var decoder;
function lazyLoadComparison() {
var comparison = require('./internal/util/comparisons');
isDeepEqual = comparison.isDeepEqual;
isDeepStrictEqual = comparison.isDeepStrictEqual;
} // Escape control characters but not \n and \t to keep the line breaks and
// indentation intact.
// eslint-disable-next-line no-control-regex
var escapeSequencesRegExp = /[\x00-\x08\x0b\x0c\x0e-\x1f]/g;
var meta = ["\\u0000", "\\u0001", "\\u0002", "\\u0003", "\\u0004", "\\u0005", "\\u0006", "\\u0007", '\\b', '', '', "\\u000b", '\\f', '', "\\u000e", "\\u000f", "\\u0010", "\\u0011", "\\u0012", "\\u0013", "\\u0014", "\\u0015", "\\u0016", "\\u0017", "\\u0018", "\\u0019", "\\u001a", "\\u001b", "\\u001c", "\\u001d", "\\u001e", "\\u001f"];
var escapeFn = function escapeFn(str) {
return meta[str.charCodeAt(0)];
};
var warned = false; // The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.
var assert = module.exports = ok;
var NO_EXCEPTION_SENTINEL = {}; // All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided. All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.
function innerFail(obj) {
if (obj.message instanceof Error) throw obj.message;
throw new AssertionError(obj);
}
function fail(actual, expected, message, operator, stackStartFn) {
var argsLen = arguments.length;
var internalMessage;
if (argsLen === 0) {
internalMessage = 'Failed';
} else if (argsLen === 1) {
message = actual;
actual = undefined;
} else {
if (warned === false) {
warned = true;
var warn = process.emitWarning ? process.emitWarning : console.warn.bind(console);
warn('assert.fail() with more than one argument is deprecated. ' + 'Please use assert.strictEqual() instead or only pass a message.', 'DeprecationWarning', 'DEP0094');
}
if (argsLen === 2) operator = '!=';
}
if (message instanceof Error) throw message;
var errArgs = {
actual: actual,
expected: expected,
operator: operator === undefined ? 'fail' : operator,
stackStartFn: stackStartFn || fail
};
if (message !== undefined) {
errArgs.message = message;
}
var err = new AssertionError(errArgs);
if (internalMessage) {
err.message = internalMessage;
err.generatedMessage = true;
}
throw err;
}
assert.fail = fail; // The AssertionError is defined in internal/error.
assert.AssertionError = AssertionError;
function innerOk(fn, argLen, value, message) {
if (!value) {
var generatedMessage = false;
if (argLen === 0) {
generatedMessage = true;
message = 'No value argument passed to `assert.ok()`';
} else if (message instanceof Error) {
throw message;
}
var err = new AssertionError({
actual: value,
expected: true,
message: message,
operator: '==',
stackStartFn: fn
});
err.generatedMessage = generatedMessage;
throw err;
}
} // Pure assertion tests whether a value is truthy, as determined
// by !!value.
function ok() {
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
innerOk.apply(void 0, [ok, args.length].concat(args));
}
assert.ok = ok; // The equality assertion tests shallow, coercive equality with ==.
/* eslint-disable no-restricted-properties */
assert.equal = function equal(actual, expected, message) {
if (arguments.length < 2) {
throw new ERR_MISSING_ARGS('actual', 'expected');
} // eslint-disable-next-line eqeqeq
if (actual != expected) {
innerFail({
actual: actual,
expected: expected,
message: message,
operator: '==',
stackStartFn: equal
});
}
}; // The non-equality assertion tests for whether two objects are not
// equal with !=.
assert.notEqual = function notEqual(actual, expected, message) {
if (arguments.length < 2) {
throw new ERR_MISSING_ARGS('actual', 'expected');
} // eslint-disable-next-line eqeqeq
if (actual == expected) {
innerFail({
actual: actual,
expected: expected,
message: message,
operator: '!=',
stackStartFn: notEqual
});
}
}; // The equivalence assertion tests a deep equality relation.
assert.deepEqual = function deepEqual(actual, expected, message) {
if (arguments.length < 2) {
throw new ERR_MISSING_ARGS('actual', 'expected');
}
if (isDeepEqual === undefined) lazyLoadComparison();
if (!isDeepEqual(actual, expected)) {
innerFail({
actual: actual,
expected: expected,
message: message,
operator: 'deepEqual',
stackStartFn: deepEqual
});
}
}; // The non-equivalence assertion tests for any deep inequality.
assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
if (arguments.length < 2) {
throw new ERR_MISSING_ARGS('actual', 'expected');
}
if (isDeepEqual === undefined) lazyLoadComparison();
if (isDeepEqual(actual, expected)) {
innerFail({
actual: actual,
expected: expected,
message: message,
operator: 'notDeepEqual',
stackStartFn: notDeepEqual
});
}
};
/* eslint-enable */
assert.deepStrictEqual = function deepStrictEqual(actual, expected, message) {
if (arguments.length < 2) {
throw new ERR_MISSING_ARGS('actual', 'expected');
}
if (isDeepEqual === undefined) lazyLoadComparison();
if (!isDeepStrictEqual(actual, expected)) {
innerFail({
actual: actual,
expected: expected,
message: message,
operator: 'deepStrictEqual',
stackStartFn: deepStrictEqual
});
}
};
assert.notDeepStrictEqual = notDeepStrictEqual;
function notDeepStrictEqual(actual, expected, message) {
if (arguments.length < 2) {
throw new ERR_MISSING_ARGS('actual', 'expected');
}
if (isDeepEqual === undefined) lazyLoadComparison();
if (isDeepStrictEqual(actual, expected)) {
innerFail({
actual: actual,
expected: expected,
message: message,
operator: 'notDeepStrictEqual',
stackStartFn: notDeepStrictEqual
});
}
}
assert.strictEqual = function strictEqual(actual, expected, message) {
if (arguments.length < 2) {
throw new ERR_MISSING_ARGS('actual', 'expected');
}
if (!objectIs(actual, expected)) {
innerFail({
actual: actual,
expected: expected,
message: message,
operator: 'strictEqual',
stackStartFn: strictEqual
});
}
};
assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
if (arguments.length < 2) {
throw new ERR_MISSING_ARGS('actual', 'expected');
}
if (objectIs(actual, expected)) {
innerFail({
actual: actual,
expected: expected,
message: message,
operator: 'notStrictEqual',
stackStartFn: notStrictEqual
});
}
};
var Comparison = function Comparison(obj, keys, actual) {
var _this = this;
_classCallCheck(this, Comparison);
keys.forEach(function (key) {
if (key in obj) {
if (actual !== undefined && typeof actual[key] === 'string' && isRegExp(obj[key]) && obj[key].test(actual[key])) {
_this[key] = actual[key];
} else {
_this[key] = obj[key];
}
}
});
};
function compareExceptionKey(actual, expected, key, message, keys, fn) {
if (!(key in actual) || !isDeepStrictEqual(actual[key], expected[key])) {
if (!message) {
// Create placeholder objects to create a nice output.
var a = new Comparison(actual, keys);
var b = new Comparison(expected, keys, actual);
var err = new AssertionError({
actual: a,
expected: b,
operator: 'deepStrictEqual',
stackStartFn: fn
});
err.actual = actual;
err.expected = expected;
err.operator = fn.name;
throw err;
}
innerFail({
actual: actual,
expected: expected,
message: message,
operator: fn.name,
stackStartFn: fn
});
}
}
function expectedException(actual, expected, msg, fn) {
if (typeof expected !== 'function') {
if (isRegExp(expected)) return expected.test(actual); // assert.doesNotThrow does not accept objects.
if (arguments.length === 2) {
throw new ERR_INVALID_ARG_TYPE('expected', ['Function', 'RegExp'], expected);
} // Handle primitives properly.
if (_typeof(actual) !== 'object' || actual === null) {
var err = new AssertionError({
actual: actual,
expected: expected,
message: msg,
operator: 'deepStrictEqual',
stackStartFn: fn
});
err.operator = fn.name;
throw err;
}
var keys = Object.keys(expected); // Special handle errors to make sure the name and the message are compared
// as well.
if (expected instanceof Error) {
keys.push('name', 'message');
} else if (keys.length === 0) {
throw new ERR_INVALID_ARG_VALUE('error', expected, 'may not be an empty object');
}
if (isDeepEqual === undefined) lazyLoadComparison();
keys.forEach(function (key) {
if (typeof actual[key] === 'string' && isRegExp(expected[key]) && expected[key].test(actual[key])) {
return;
}
compareExceptionKey(actual, expected, key, msg, keys, fn);
});
return true;
} // Guard instanceof against arrow functions as they don't have a prototype.
if (expected.prototype !== undefined && actual instanceof expected) {
return true;
}
if (Error.isPrototypeOf(expected)) {
return false;
}
return expected.call({}, actual) === true;
}
function getActual(fn) {
if (typeof fn !== 'function') {
throw new ERR_INVALID_ARG_TYPE('fn', 'Function', fn);
}
try {
fn();
} catch (e) {
return e;
}
return NO_EXCEPTION_SENTINEL;
}
function checkIsPromise(obj) {
// Accept native ES6 promises and promises that are implemented in a similar
// way. Do not accept thenables that use a function as `obj` and that have no
// `catch` handler.
// TODO: thenables are checked up until they have the correct methods,
// but according to documentation, the `then` method should receive
// the `fulfill` and `reject` arguments as well or it may be never resolved.
return isPromise(obj) || obj !== null && _typeof(obj) === 'object' && typeof obj.then === 'function' && typeof obj.catch === 'function';
}
function waitForActual(promiseFn) {
return Promise.resolve().then(function () {
var resultPromise;
if (typeof promiseFn === 'function') {
// Return a rejected promise if `promiseFn` throws synchronously.
resultPromise = promiseFn(); // Fail in case no promise is returned.
if (!checkIsPromise(resultPromise)) {
throw new ERR_INVALID_RETURN_VALUE('instance of Promise', 'promiseFn', resultPromise);
}
} else if (checkIsPromise(promiseFn)) {
resultPromise = promiseFn;
} else {
throw new ERR_INVALID_ARG_TYPE('promiseFn', ['Function', 'Promise'], promiseFn);
}
return Promise.resolve().then(function () {
return resultPromise;
}).then(function () {
return NO_EXCEPTION_SENTINEL;
}).catch(function (e) {
return e;
});
});
}
function expectsError(stackStartFn, actual, error, message) {
if (typeof error === 'string') {
if (arguments.length === 4) {
throw new ERR_INVALID_ARG_TYPE('error', ['Object', 'Error', 'Function', 'RegExp'], error);
}
if (_typeof(actual) === 'object' && actual !== null) {
if (actual.message === error) {
throw new ERR_AMBIGUOUS_ARGUMENT('error/message', "The error message \"".concat(actual.message, "\" is identical to the message."));
}
} else if (actual === error) {
throw new ERR_AMBIGUOUS_ARGUMENT('error/message', "The error \"".concat(actual, "\" is identical to the message."));
}
message = error;
error = undefined;
} else if (error != null && _typeof(error) !== 'object' && typeof error !== 'function') {
throw new ERR_INVALID_ARG_TYPE('error', ['Object', 'Error', 'Function', 'RegExp'], error);
}
if (actual === NO_EXCEPTION_SENTINEL) {
var details = '';
if (error && error.name) {
details += " (".concat(error.name, ")");
}
details += message ? ": ".concat(message) : '.';
var fnType = stackStartFn.name === 'rejects' ? 'rejection' : 'exception';
innerFail({
actual: undefined,
expected: error,
operator: stackStartFn.name,
message: "Missing expected ".concat(fnType).concat(details),
stackStartFn: stackStartFn
});
}
if (error && !expectedException(actual, error, message, stackStartFn)) {
throw actual;
}
}
function expectsNoError(stackStartFn, actual, error, message) {
if (actual === NO_EXCEPTION_SENTINEL) return;
if (typeof error === 'string') {
message = error;
error = undefined;
}
if (!error || expectedException(actual, error)) {
var details = message ? ": ".concat(message) : '.';
var fnType = stackStartFn.name === 'doesNotReject' ? 'rejection' : 'exception';
innerFail({
actual: actual,
expected: error,
operator: stackStartFn.name,
message: "Got unwanted ".concat(fnType).concat(details, "\n") + "Actual message: \"".concat(actual && actual.message, "\""),
stackStartFn: stackStartFn
});
}
throw actual;
}
assert.throws = function throws(promiseFn) {
for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
args[_key2 - 1] = arguments[_key2];
}
expectsError.apply(void 0, [throws, getActual(promiseFn)].concat(args));
};
assert.rejects = function rejects(promiseFn) {
for (var _len3 = arguments.length, args = new Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) {
args[_key3 - 1] = arguments[_key3];
}
return waitForActual(promiseFn).then(function (result) {
return expectsError.apply(void 0, [rejects, result].concat(args));
});
};
assert.doesNotThrow = function doesNotThrow(fn) {
for (var _len4 = arguments.length, args = new Array(_len4 > 1 ? _len4 - 1 : 0), _key4 = 1; _key4 < _len4; _key4++) {
args[_key4 - 1] = arguments[_key4];
}
expectsNoError.apply(void 0, [doesNotThrow, getActual(fn)].concat(args));
};
assert.doesNotReject = function doesNotReject(fn) {
for (var _len5 = arguments.length, args = new Array(_len5 > 1 ? _len5 - 1 : 0), _key5 = 1; _key5 < _len5; _key5++) {
args[_key5 - 1] = arguments[_key5];
}
return waitForActual(fn).then(function (result) {
return expectsNoError.apply(void 0, [doesNotReject, result].concat(args));
});
};
assert.ifError = function ifError(err) {
if (err !== null && err !== undefined) {
var message = 'ifError got unwanted exception: ';
if (_typeof(err) === 'object' && typeof err.message === 'string') {
if (err.message.length === 0 && err.constructor) {
message += err.constructor.name;
} else {
message += err.message;
}
} else {
message += inspect(err);
}
var newErr = new AssertionError({
actual: err,
expected: null,
operator: 'ifError',
message: message,
stackStartFn: ifError
}); // Make sure we actually have a stack trace!
var origStack = err.stack;
if (typeof origStack === 'string') {
// This will remove any duplicated frames from the error frames taken
// from within `ifError` and add the original error frames to the newly
// created ones.
var tmp2 = origStack.split('\n');
tmp2.shift(); // Filter all frames existing in err.stack.
var tmp1 = newErr.stack.split('\n');
for (var i = 0; i < tmp2.length; i++) {
// Find the first occurrence of the frame.
var pos = tmp1.indexOf(tmp2[i]);
if (pos !== -1) {
// Only keep new frames.
tmp1 = tmp1.slice(0, pos);
break;
}
}
newErr.stack = "".concat(tmp1.join('\n'), "\n").concat(tmp2.join('\n'));
}
throw newErr;
}
}; // Expose a strict only variant of assert
function strict() {
for (var _len6 = arguments.length, args = new Array(_len6), _key6 = 0; _key6 < _len6; _key6++) {
args[_key6] = arguments[_key6];
}
innerOk.apply(void 0, [strict, args.length].concat(args));
}
assert.strict = objectAssign(strict, assert, {
equal: assert.strictEqual,
deepEqual: assert.deepStrictEqual,
notEqual: assert.notStrictEqual,
notDeepEqual: assert.notDeepStrictEqual
});
assert.strict.strict = assert.strict;