Value identification and comparison functions. 

Value identification and comparison functions

mantoni

simenb

cjohansen

fatso83

mrgnrdrck

benjamin.gruenbaum

@sinonjs/samsam

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var valueToString = require("@sinonjs/commons").valueToString;

var className = require("@sinonjs/commons").className;

var typeOf = require("@sinonjs/commons").typeOf;

var arrayProto = require("@sinonjs/commons").prototypes.array;

var objectProto = require("@sinonjs/commons").prototypes.object;

var mapForEach = require("@sinonjs/commons").prototypes.map.forEach;

var isArguments = require("./is-arguments");

var isArrayType = require("./is-array-type");

var isIterable = require("./is-iterable");

var hasOwnProperty = objectProto.hasOwnProperty;

var getOwnPropertySymbols = Object.getOwnPropertySymbols;

 * Deep equal comparison. Two values are "deep equal" when:

 *   - They are equal, according to samsam.identical

 *   - They are both date objects representing the same time

 *   - They are both arrays containing elements that are all deepEqual

 *   - They are objects with the same set of properties, and each property

 *     in ``actual`` is deepEqual to the corresponding property in ``expectation``

 * @param {*} actual The object to examine

 * @param {*} expectation The object actual is expected to be equal to

 * @param {object} match A value to match on

 * @returns {boolean} Returns true when actual and expectation are considered equal

function deepEqualCyclic(actual, expectation, match) {

    // contain pathes (position in the object structure)

    // contains combinations of already compared objects

    // in the manner: { "$1['ref']$2['ref']": true }

    // does the recursion for the deep equal check

    // eslint-disable-next-line complexity

        // If both are matchers they must be the same instance in order to be

        // considered equal If we didn't do that we would end up running one

        if (match && match.isMatcher(expectationObj)) {

            if (match.isMatcher(actualObj)) {

                return actualObj === expectationObj;

            return expectationObj.test(actualObj);

        var actualType = typeof actualObj;

        var expectationType = typeof expectationObj;

            actualObj === expectationObj ||

            expectationObj === undefined ||

            return identical(actualObj, expectationObj);

        // Elements are only equal if identical(expected, actual)

        if (isElement(actualObj) || isElement(expectationObj)) {

        var isActualDate = isDate(actualObj);

        var isExpectationDate = isDate(expectationObj);

        if (isActualDate || isExpectationDate) {

                getTime.call(actualObj) !== getTime.call(expectationObj)

        if (actualObj instanceof RegExp && expectationObj instanceof RegExp) {

            if (valueToString(actualObj) !== valueToString(expectationObj)) {

        var isExpectationNonArrayIterable =

        if (isActualNonArrayIterable || isExpectationNonArrayIterable) {

            var actualArray = Array.from(actualObj);

            var expectationArray = Array.from(expectation);

            if (actualArray.length !== expectationArray.length) {

            var arrayDeeplyEquals = true;

            every(actualArray, function (key) {

                    deepEqualCyclic(actualArray[key], expectationArray[key]);

        return every(expectationKeysAndSymbols, function (key) {

            if (!hasOwnProperty(actualObj, key)) {

            var actualValue = actualObj[key];

            var expectationValue = expectationObj[key];

            var actualObject = isObject(actualValue);

            var expectationObject = isObject(expectationValue);

            // determines, if the objects were already visited

            // (it's faster to check for isObject first, than to

            // get -1 from getIndex for non objects)

            var actualIndex = actualObject

                ? indexOf(actualObjects, actualValue)

            var expectationIndex = expectationObject

                ? indexOf(expectationObjects, expectationValue)

            // determines the new paths of the objects

            // - for non cyclic objects the current path will be extended

            //   by current property name

            // - for cyclic objects the stored path is taken

                    ? actualPaths[actualIndex]

                    : `${actualPath}[${JSON.stringify(key)}]`;

                    ? expectationPaths[expectationIndex]

                    : `${expectationPath}[${JSON.stringify(key)}]`;

            var combinedPath = newActualPath + newExpectationPath;

            // stop recursion if current objects are already compared

            if (compared[combinedPath]) {

            // remember the current objects and their paths

            if (actualIndex === -1 && actualObject) {

                push(actualObjects, actualValue);

                push(actualPaths, newActualPath);

            if (expectationIndex === -1 && expectationObject) {

                push(expectationObjects, expectationValue);

                push(expectationPaths, newExpectationPath);

            // remember that the current objects are already compared

            if (actualObject && expectationObject) {

                compared[combinedPath] = true;

            // neither actualValue nor expectationValue is a cycle

 @@ -13,4 +13,6 @@ "use strict";
 var isArguments = require("./is-arguments");
 var isArrayType = require("./is-array-type");
 var isDate = require("./is-date");
 var isElement = require("./is-element");
 var isIterable = require("./is-iterable");
 var isMap = require("./is-map");
 @@ -193,2 +195,27 @@ var isNaN = require("./is-nan");
         var isActualNonArrayIterable =
             isIterable(actualObj) &&
             !isArrayType(actualObj) &&
             !isArguments(actualObj);
         var isExpectationNonArrayIterable =
             isIterable(expectation) &&
             !isArrayType(expectation) &&
             !isArguments(expectation);
         if (isActualNonArrayIterable || isExpectationNonArrayIterable) {
             var actualArray = Array.from(actualObj);
             var expectationArray = Array.from(expectation);
             if (actualArray.length !== expectationArray.length) {
                 return false;
             var arrayDeeplyEquals = true;
             every(actualArray, function (key) {
                 arrayDeeplyEquals =
                     arrayDeeplyEquals &&
                     deepEqualCyclic(actualArray[key], expectationArray[key]);
             });
             return arrayDeeplyEquals;
         return every(expectationKeysAndSymbols, function (key) {
 @@ -195,0 +222,0 @@ if (!hasOwnProperty(actualObj, key)) {

		{
		"name": "@sinonjs/samsam",
		"version": "6.0.2",
		"version": "6.1.0",
		"description": "Value identification and comparison functions",
		@@ -31,3 +31,3 @@ "homepage": "http://sinonjs.github.io/samsam/",
		"prettier:write": "prettier --write '*/.{js,css,md}'",
		"preversion": "npm run test-check-coverage",
		"preversion": "./check-external-dependencies.sh && npm run test-check-coverage",
		"version": "changes --commits --footer",
		@@ -34,0 +34,0 @@ "postversion": "git push --follow-tags && npm publish --access public"

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