395 lines
12 KiB
JavaScript
395 lines
12 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, '__esModule', {
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value: true
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});
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exports.arrayBufferEquality = void 0;
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exports.emptyObject = emptyObject;
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exports.typeEquality =
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exports.subsetEquality =
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exports.sparseArrayEquality =
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exports.pathAsArray =
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exports.partition =
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exports.iterableEquality =
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exports.isOneline =
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exports.isError =
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exports.getPath =
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exports.getObjectSubset =
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void 0;
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var _jestGetType = require('jest-get-type');
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var _immutableUtils = require('./immutableUtils');
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var _jasmineUtils = require('./jasmineUtils');
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var Symbol = globalThis['jest-symbol-do-not-touch'] || globalThis.Symbol;
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/**
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* Checks if `hasOwnProperty(object, key)` up the prototype chain, stopping at `Object.prototype`.
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*/
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const hasPropertyInObject = (object, key) => {
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const shouldTerminate =
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!object || typeof object !== 'object' || object === Object.prototype;
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if (shouldTerminate) {
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return false;
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}
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return (
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Object.prototype.hasOwnProperty.call(object, key) ||
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hasPropertyInObject(Object.getPrototypeOf(object), key)
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);
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};
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const getPath = (object, propertyPath) => {
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if (!Array.isArray(propertyPath)) {
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propertyPath = pathAsArray(propertyPath);
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}
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if (propertyPath.length) {
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const lastProp = propertyPath.length === 1;
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const prop = propertyPath[0];
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const newObject = object[prop];
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if (!lastProp && (newObject === null || newObject === undefined)) {
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// This is not the last prop in the chain. If we keep recursing it will
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// hit a `can't access property X of undefined | null`. At this point we
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// know that the chain has broken and we can return right away.
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return {
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hasEndProp: false,
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lastTraversedObject: object,
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traversedPath: []
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};
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}
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const result = getPath(newObject, propertyPath.slice(1));
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if (result.lastTraversedObject === null) {
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result.lastTraversedObject = object;
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}
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result.traversedPath.unshift(prop);
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if (lastProp) {
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// Does object have the property with an undefined value?
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// Although primitive values support bracket notation (above)
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// they would throw TypeError for in operator (below).
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result.endPropIsDefined =
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!(0, _jestGetType.isPrimitive)(object) && prop in object;
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result.hasEndProp = newObject !== undefined || result.endPropIsDefined;
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if (!result.hasEndProp) {
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result.traversedPath.shift();
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}
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}
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return result;
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}
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return {
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lastTraversedObject: null,
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traversedPath: [],
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value: object
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};
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};
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// Strip properties from object that are not present in the subset. Useful for
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// printing the diff for toMatchObject() without adding unrelated noise.
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/* eslint-disable @typescript-eslint/explicit-module-boundary-types */
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exports.getPath = getPath;
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const getObjectSubset = (object, subset, seenReferences = new WeakMap()) => {
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/* eslint-enable @typescript-eslint/explicit-module-boundary-types */
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if (Array.isArray(object)) {
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if (Array.isArray(subset) && subset.length === object.length) {
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// The map method returns correct subclass of subset.
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return subset.map((sub, i) => getObjectSubset(object[i], sub));
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}
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} else if (object instanceof Date) {
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return object;
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} else if (isObject(object) && isObject(subset)) {
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if (
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(0, _jasmineUtils.equals)(object, subset, [
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iterableEquality,
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subsetEquality
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])
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) {
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// Avoid unnecessary copy which might return Object instead of subclass.
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return subset;
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}
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const trimmed = {};
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seenReferences.set(object, trimmed);
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Object.keys(object)
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.filter(key => hasPropertyInObject(subset, key))
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.forEach(key => {
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trimmed[key] = seenReferences.has(object[key])
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? seenReferences.get(object[key])
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: getObjectSubset(object[key], subset[key], seenReferences);
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});
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if (Object.keys(trimmed).length > 0) {
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return trimmed;
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}
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}
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return object;
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};
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exports.getObjectSubset = getObjectSubset;
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const IteratorSymbol = Symbol.iterator;
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const hasIterator = object => !!(object != null && object[IteratorSymbol]);
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/* eslint-disable @typescript-eslint/explicit-module-boundary-types */
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const iterableEquality = (
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a,
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b /* eslint-enable @typescript-eslint/explicit-module-boundary-types */,
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aStack = [],
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bStack = []
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) => {
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if (
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typeof a !== 'object' ||
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typeof b !== 'object' ||
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Array.isArray(a) ||
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Array.isArray(b) ||
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!hasIterator(a) ||
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!hasIterator(b)
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) {
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return undefined;
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}
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if (a.constructor !== b.constructor) {
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return false;
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}
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let length = aStack.length;
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while (length--) {
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// Linear search. Performance is inversely proportional to the number of
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// unique nested structures.
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// circular references at same depth are equal
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// circular reference is not equal to non-circular one
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if (aStack[length] === a) {
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return bStack[length] === b;
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}
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}
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aStack.push(a);
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bStack.push(b);
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const iterableEqualityWithStack = (a, b) =>
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iterableEquality(a, b, [...aStack], [...bStack]);
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if (a.size !== undefined) {
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if (a.size !== b.size) {
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return false;
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} else if (
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(0, _jasmineUtils.isA)('Set', a) ||
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(0, _immutableUtils.isImmutableUnorderedSet)(a)
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) {
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let allFound = true;
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for (const aValue of a) {
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if (!b.has(aValue)) {
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let has = false;
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for (const bValue of b) {
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const isEqual = (0, _jasmineUtils.equals)(aValue, bValue, [
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iterableEqualityWithStack
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]);
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if (isEqual === true) {
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has = true;
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}
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}
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if (has === false) {
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allFound = false;
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break;
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}
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}
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}
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// Remove the first value from the stack of traversed values.
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aStack.pop();
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bStack.pop();
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return allFound;
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} else if (
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(0, _jasmineUtils.isA)('Map', a) ||
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(0, _immutableUtils.isImmutableUnorderedKeyed)(a)
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) {
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let allFound = true;
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for (const aEntry of a) {
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if (
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!b.has(aEntry[0]) ||
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!(0, _jasmineUtils.equals)(aEntry[1], b.get(aEntry[0]), [
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iterableEqualityWithStack
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])
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) {
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let has = false;
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for (const bEntry of b) {
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const matchedKey = (0, _jasmineUtils.equals)(aEntry[0], bEntry[0], [
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iterableEqualityWithStack
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]);
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let matchedValue = false;
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if (matchedKey === true) {
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matchedValue = (0, _jasmineUtils.equals)(aEntry[1], bEntry[1], [
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iterableEqualityWithStack
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]);
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}
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if (matchedValue === true) {
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has = true;
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}
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}
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if (has === false) {
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allFound = false;
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break;
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}
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}
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}
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// Remove the first value from the stack of traversed values.
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aStack.pop();
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bStack.pop();
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return allFound;
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}
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}
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const bIterator = b[IteratorSymbol]();
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for (const aValue of a) {
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const nextB = bIterator.next();
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if (
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nextB.done ||
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!(0, _jasmineUtils.equals)(aValue, nextB.value, [
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iterableEqualityWithStack
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])
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) {
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return false;
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}
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}
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if (!bIterator.next().done) {
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return false;
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}
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if (
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!(0, _immutableUtils.isImmutableList)(a) &&
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!(0, _immutableUtils.isImmutableOrderedKeyed)(a) &&
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!(0, _immutableUtils.isImmutableOrderedSet)(a) &&
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!(0, _immutableUtils.isImmutableRecord)(a)
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) {
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const aEntries = Object.entries(a);
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const bEntries = Object.entries(b);
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if (!(0, _jasmineUtils.equals)(aEntries, bEntries)) {
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return false;
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}
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}
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// Remove the first value from the stack of traversed values.
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aStack.pop();
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bStack.pop();
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return true;
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};
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exports.iterableEquality = iterableEquality;
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const isObject = a => a !== null && typeof a === 'object';
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const isObjectWithKeys = a =>
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isObject(a) &&
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!(a instanceof Error) &&
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!(a instanceof Array) &&
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!(a instanceof Date);
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const subsetEquality = (object, subset) => {
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// subsetEquality needs to keep track of the references
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// it has already visited to avoid infinite loops in case
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// there are circular references in the subset passed to it.
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const subsetEqualityWithContext =
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(seenReferences = new WeakMap()) =>
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(object, subset) => {
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if (!isObjectWithKeys(subset)) {
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return undefined;
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}
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return Object.keys(subset).every(key => {
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if (isObjectWithKeys(subset[key])) {
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if (seenReferences.has(subset[key])) {
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return (0, _jasmineUtils.equals)(object[key], subset[key], [
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iterableEquality
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]);
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}
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seenReferences.set(subset[key], true);
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}
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const result =
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object != null &&
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hasPropertyInObject(object, key) &&
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(0, _jasmineUtils.equals)(object[key], subset[key], [
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iterableEquality,
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subsetEqualityWithContext(seenReferences)
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]);
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// The main goal of using seenReference is to avoid circular node on tree.
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// It will only happen within a parent and its child, not a node and nodes next to it (same level)
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// We should keep the reference for a parent and its child only
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// Thus we should delete the reference immediately so that it doesn't interfere
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// other nodes within the same level on tree.
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seenReferences.delete(subset[key]);
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return result;
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});
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};
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return subsetEqualityWithContext()(object, subset);
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};
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// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
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exports.subsetEquality = subsetEquality;
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const typeEquality = (a, b) => {
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if (a == null || b == null || a.constructor === b.constructor) {
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return undefined;
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}
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return false;
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};
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exports.typeEquality = typeEquality;
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const arrayBufferEquality = (a, b) => {
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if (!(a instanceof ArrayBuffer) || !(b instanceof ArrayBuffer)) {
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return undefined;
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}
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const dataViewA = new DataView(a);
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const dataViewB = new DataView(b);
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// Buffers are not equal when they do not have the same byte length
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if (dataViewA.byteLength !== dataViewB.byteLength) {
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return false;
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}
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// Check if every byte value is equal to each other
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for (let i = 0; i < dataViewA.byteLength; i++) {
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if (dataViewA.getUint8(i) !== dataViewB.getUint8(i)) {
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return false;
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}
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}
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return true;
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};
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exports.arrayBufferEquality = arrayBufferEquality;
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const sparseArrayEquality = (a, b) => {
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if (!Array.isArray(a) || !Array.isArray(b)) {
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return undefined;
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}
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// A sparse array [, , 1] will have keys ["2"] whereas [undefined, undefined, 1] will have keys ["0", "1", "2"]
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const aKeys = Object.keys(a);
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const bKeys = Object.keys(b);
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return (
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(0, _jasmineUtils.equals)(a, b, [iterableEquality, typeEquality], true) &&
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(0, _jasmineUtils.equals)(aKeys, bKeys)
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);
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};
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exports.sparseArrayEquality = sparseArrayEquality;
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const partition = (items, predicate) => {
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const result = [[], []];
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items.forEach(item => result[predicate(item) ? 0 : 1].push(item));
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return result;
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};
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exports.partition = partition;
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const pathAsArray = propertyPath => {
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const properties = [];
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if (propertyPath === '') {
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properties.push('');
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return properties;
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}
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// will match everything that's not a dot or a bracket, and "" for consecutive dots.
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const pattern = RegExp('[^.[\\]]+|(?=(?:\\.)(?:\\.|$))', 'g');
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// Because the regex won't match a dot in the beginning of the path, if present.
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if (propertyPath[0] === '.') {
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properties.push('');
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}
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propertyPath.replace(pattern, match => {
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properties.push(match);
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return match;
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});
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return properties;
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};
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// Copied from https://github.com/graingert/angular.js/blob/a43574052e9775cbc1d7dd8a086752c979b0f020/src/Angular.js#L685-L693
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exports.pathAsArray = pathAsArray;
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const isError = value => {
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switch (Object.prototype.toString.call(value)) {
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case '[object Error]':
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case '[object Exception]':
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case '[object DOMException]':
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return true;
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default:
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return value instanceof Error;
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}
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};
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exports.isError = isError;
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function emptyObject(obj) {
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return obj && typeof obj === 'object' ? !Object.keys(obj).length : false;
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}
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const MULTILINE_REGEXP = /[\r\n]/;
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const isOneline = (expected, received) =>
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typeof expected === 'string' &&
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typeof received === 'string' &&
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(!MULTILINE_REGEXP.test(expected) || !MULTILINE_REGEXP.test(received));
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exports.isOneline = isOneline;
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