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472 lines
14 KiB
JavaScript
472 lines
14 KiB
JavaScript
// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
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//
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// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
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//
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// Copyright (c) 2011 Jxck
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//
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// Originally from node.js (http://nodejs.org)
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// Copyright Joyent, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the 'Software'), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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(function(root, factory) {
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if (typeof define === 'function' && define.amd) {
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define([], factory); // AMD
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} else if (typeof exports === 'object') {
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module.exports = factory(); // CommonJS
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} else {
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root.assert = factory(); // Global
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}
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})(this, function() {
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// UTILITY
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// Object.create compatible in IE
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var create = Object.create || function(p) {
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if (!p) throw Error('no type');
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function f() {};
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f.prototype = p;
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return new f();
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};
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// UTILITY
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var util = {
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inherits: function(ctor, superCtor) {
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ctor.super_ = superCtor;
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ctor.prototype = create(superCtor.prototype, {
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constructor: {
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value: ctor,
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enumerable: false,
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writable: true,
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configurable: true
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}
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});
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},
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isArray: function(ar) {
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return Array.isArray(ar);
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},
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isBoolean: function(arg) {
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return typeof arg === 'boolean';
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},
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isNull: function(arg) {
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return arg === null;
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},
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isNullOrUndefined: function(arg) {
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return arg == null;
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},
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isNumber: function(arg) {
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return typeof arg === 'number';
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},
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isString: function(arg) {
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return typeof arg === 'string';
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},
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isSymbol: function(arg) {
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return typeof arg === 'symbol';
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},
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isUndefined: function(arg) {
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return arg === undefined;
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},
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isRegExp: function(re) {
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return util.isObject(re) && util.objectToString(re) === '[object RegExp]';
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},
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isObject: function(arg) {
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return typeof arg === 'object' && arg !== null;
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},
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isDate: function(d) {
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return util.isObject(d) && util.objectToString(d) === '[object Date]';
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},
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isError: function(e) {
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return isObject(e) &&
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(objectToString(e) === '[object Error]' || e instanceof Error);
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},
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isFunction: function(arg) {
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return typeof arg === 'function';
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},
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isPrimitive: function(arg) {
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return arg === null ||
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typeof arg === 'boolean' ||
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typeof arg === 'number' ||
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typeof arg === 'string' ||
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typeof arg === 'symbol' || // ES6 symbol
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typeof arg === 'undefined';
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},
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objectToString: function(o) {
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return Object.prototype.toString.call(o);
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}
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};
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var pSlice = Array.prototype.slice;
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// From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys
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var Object_keys = typeof Object.keys === 'function' ? Object.keys : (function() {
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var hasOwnProperty = Object.prototype.hasOwnProperty,
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hasDontEnumBug = !({ toString: null }).propertyIsEnumerable('toString'),
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dontEnums = [
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'toString',
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'toLocaleString',
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'valueOf',
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'hasOwnProperty',
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'isPrototypeOf',
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'propertyIsEnumerable',
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'constructor'
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],
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dontEnumsLength = dontEnums.length;
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return function(obj) {
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if (typeof obj !== 'object' && (typeof obj !== 'function' || obj === null)) {
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throw new TypeError('Object.keys called on non-object');
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}
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var result = [], prop, i;
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for (prop in obj) {
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if (hasOwnProperty.call(obj, prop)) {
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result.push(prop);
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}
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}
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if (hasDontEnumBug) {
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for (i = 0; i < dontEnumsLength; i++) {
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if (hasOwnProperty.call(obj, dontEnums[i])) {
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result.push(dontEnums[i]);
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}
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}
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}
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return result;
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};
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})();
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// 1. The assert module provides functions that throw
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// AssertionError's when particular conditions are not met. The
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// assert module must conform to the following interface.
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var assert = ok;
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// 2. The AssertionError is defined in assert.
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// new assert.AssertionError({ message: message,
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// actual: actual,
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// expected: expected })
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assert.AssertionError = function AssertionError(options) {
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this.name = 'AssertionError';
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this.actual = options.actual;
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this.expected = options.expected;
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this.operator = options.operator;
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if (options.message) {
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this.message = options.message;
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this.generatedMessage = false;
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} else {
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this.message = getMessage(this);
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this.generatedMessage = true;
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}
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var stackStartFunction = options.stackStartFunction || fail;
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if (Error.captureStackTrace) {
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Error.captureStackTrace(this, stackStartFunction);
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} else {
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// try to throw an error now, and from the stack property
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// work out the line that called in to assert.js.
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try {
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this.stack = (new Error).stack.toString();
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} catch (e) {}
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}
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};
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// assert.AssertionError instanceof Error
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util.inherits(assert.AssertionError, Error);
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function replacer(key, value) {
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if (util.isUndefined(value)) {
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return '' + value;
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}
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if (util.isNumber(value) && (isNaN(value) || !isFinite(value))) {
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return value.toString();
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}
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if (util.isFunction(value) || util.isRegExp(value)) {
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return value.toString();
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}
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return value;
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}
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function truncate(s, n) {
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if (util.isString(s)) {
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return s.length < n ? s : s.slice(0, n);
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} else {
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return s;
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}
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}
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function getMessage(self) {
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return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
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self.operator + ' ' +
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truncate(JSON.stringify(self.expected, replacer), 128);
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}
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// At present only the three keys mentioned above are used and
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// understood by the spec. Implementations or sub modules can pass
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// other keys to the AssertionError's constructor - they will be
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// ignored.
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// 3. All of the following functions must throw an AssertionError
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// when a corresponding condition is not met, with a message that
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// may be undefined if not provided. All assertion methods provide
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// both the actual and expected values to the assertion error for
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// display purposes.
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function fail(actual, expected, message, operator, stackStartFunction) {
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throw new assert.AssertionError({
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message: message,
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actual: actual,
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expected: expected,
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operator: operator,
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stackStartFunction: stackStartFunction
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});
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}
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// EXTENSION! allows for well behaved errors defined elsewhere.
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assert.fail = fail;
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// 4. Pure assertion tests whether a value is truthy, as determined
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// by !!guard.
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// assert.ok(guard, message_opt);
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// This statement is equivalent to assert.equal(true, !!guard,
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// message_opt);. To test strictly for the value true, use
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// assert.strictEqual(true, guard, message_opt);.
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function ok(value, message) {
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if (!value) fail(value, true, message, '==', assert.ok);
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}
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assert.ok = ok;
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// 5. The equality assertion tests shallow, coercive equality with
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// ==.
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// assert.equal(actual, expected, message_opt);
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assert.equal = function equal(actual, expected, message) {
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if (actual != expected) fail(actual, expected, message, '==', assert.equal);
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};
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// 6. The non-equality assertion tests for whether two objects are not equal
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// with != assert.notEqual(actual, expected, message_opt);
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assert.notEqual = function notEqual(actual, expected, message) {
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if (actual == expected) {
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fail(actual, expected, message, '!=', assert.notEqual);
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}
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};
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// 7. The equivalence assertion tests a deep equality relation.
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// assert.deepEqual(actual, expected, message_opt);
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assert.deepEqual = function deepEqual(actual, expected, message) {
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if (!_deepEqual(actual, expected, false)) {
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fail(actual, expected, message, 'deepEqual', assert.deepEqual);
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}
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};
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assert.deepStrictEqual = function deepStrictEqual(actual, expected, message) {
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if (!_deepEqual(actual, expected, true)) {
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fail(actual, expected, message, 'deepStrictEqual', assert.deepStrictEqual);
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}
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};
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function _deepEqual(actual, expected, strict) {
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// 7.1. All identical values are equivalent, as determined by ===.
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if (actual === expected) {
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return true;
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// } else if (actual instanceof Buffer && expected instanceof Buffer) {
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// return compare(actual, expected) === 0;
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// 7.2. If the expected value is a Date object, the actual value is
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// equivalent if it is also a Date object that refers to the same time.
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} else if (util.isDate(actual) && util.isDate(expected)) {
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return actual.getTime() === expected.getTime();
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// 7.3 If the expected value is a RegExp object, the actual value is
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// equivalent if it is also a RegExp object with the same source and
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// properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
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} else if (util.isRegExp(actual) && util.isRegExp(expected)) {
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return actual.source === expected.source &&
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actual.global === expected.global &&
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actual.multiline === expected.multiline &&
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actual.lastIndex === expected.lastIndex &&
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actual.ignoreCase === expected.ignoreCase;
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// 7.4. Other pairs that do not both pass typeof value == 'object',
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// equivalence is determined by ==.
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} else if ((actual === null || typeof actual !== 'object') &&
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(expected === null || typeof expected !== 'object')) {
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return strict ? actual === expected : actual == expected;
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// 7.5 For all other Object pairs, including Array objects, equivalence is
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// determined by having the same number of owned properties (as verified
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// with Object.prototype.hasOwnProperty.call), the same set of keys
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// (although not necessarily the same order), equivalent values for every
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// corresponding key, and an identical 'prototype' property. Note: this
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// accounts for both named and indexed properties on Arrays.
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} else {
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return objEquiv(actual, expected, strict);
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}
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}
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function isArguments(object) {
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return Object.prototype.toString.call(object) == '[object Arguments]';
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}
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function objEquiv(a, b, strict) {
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if (a === null || a === undefined || b === null || b === undefined)
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return false;
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// if one is a primitive, the other must be same
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if (util.isPrimitive(a) || util.isPrimitive(b))
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return a === b;
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if (strict && Object.getPrototypeOf(a) !== Object.getPrototypeOf(b))
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return false;
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var aIsArgs = isArguments(a),
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bIsArgs = isArguments(b);
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if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
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return false;
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if (aIsArgs) {
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a = pSlice.call(a);
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b = pSlice.call(b);
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return _deepEqual(a, b, strict);
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}
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var ka = Object.keys(a),
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kb = Object.keys(b),
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key, i;
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// having the same number of owned properties (keys incorporates
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// hasOwnProperty)
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if (ka.length !== kb.length)
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return false;
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//the same set of keys (although not necessarily the same order),
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ka.sort();
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kb.sort();
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//~~~cheap key test
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for (i = ka.length - 1; i >= 0; i--) {
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if (ka[i] !== kb[i])
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return false;
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}
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//equivalent values for every corresponding key, and
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//~~~possibly expensive deep test
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for (i = ka.length - 1; i >= 0; i--) {
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key = ka[i];
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if (!_deepEqual(a[key], b[key], strict)) return false;
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}
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return true;
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}
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// 8. The non-equivalence assertion tests for any deep inequality.
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// assert.notDeepEqual(actual, expected, message_opt);
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assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
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if (_deepEqual(actual, expected, false)) {
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fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
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}
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};
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assert.notDeepStrictEqual = notDeepStrictEqual;
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function notDeepStrictEqual(actual, expected, message) {
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if (_deepEqual(actual, expected, true)) {
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fail(actual, expected, message, 'notDeepStrictEqual', notDeepStrictEqual);
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}
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}
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// 9. The strict equality assertion tests strict equality, as determined by ===.
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// assert.strictEqual(actual, expected, message_opt);
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assert.strictEqual = function strictEqual(actual, expected, message) {
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if (actual !== expected) {
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fail(actual, expected, message, '===', assert.strictEqual);
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}
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};
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// 10. The strict non-equality assertion tests for strict inequality, as
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// determined by !==. assert.notStrictEqual(actual, expected, message_opt);
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assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
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if (actual === expected) {
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fail(actual, expected, message, '!==', assert.notStrictEqual);
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}
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};
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function expectedException(actual, expected) {
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if (!actual || !expected) {
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return false;
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}
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if (Object.prototype.toString.call(expected) == '[object RegExp]') {
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return expected.test(actual);
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} else if (actual instanceof expected) {
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return true;
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} else if (expected.call({}, actual) === true) {
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return true;
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}
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return false;
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}
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function _throws(shouldThrow, block, expected, message) {
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var actual;
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if (typeof block !== 'function') {
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throw new TypeError('block must be a function');
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}
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if (typeof expected === 'string') {
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message = expected;
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expected = null;
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}
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try {
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block();
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} catch (e) {
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actual = e;
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}
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message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
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(message ? ' ' + message : '.');
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if (shouldThrow && !actual) {
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fail(actual, expected, 'Missing expected exception' + message);
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}
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if (!shouldThrow && expectedException(actual, expected)) {
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fail(actual, expected, 'Got unwanted exception' + message);
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}
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if ((shouldThrow && actual && expected &&
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!expectedException(actual, expected)) || (!shouldThrow && actual)) {
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throw actual;
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}
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}
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// 11. Expected to throw an error:
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// assert.throws(block, Error_opt, message_opt);
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assert.throws = function(block, /*optional*/error, /*optional*/message) {
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_throws.apply(this, [true].concat(pSlice.call(arguments)));
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};
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// EXTENSION! This is annoying to write outside this module.
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assert.doesNotThrow = function(block, /*optional*/message) {
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_throws.apply(this, [false].concat(pSlice.call(arguments)));
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};
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assert.ifError = function(err) { if (err) {throw err;}};
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return assert;
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});
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