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- 'use strict';
- var _prettyFormat = _interopRequireDefault(require('pretty-format'));
- var _chalk = _interopRequireDefault(require('chalk'));
- var _jestGetType = _interopRequireDefault(require('jest-get-type'));
- var _diffLines = _interopRequireDefault(require('./diffLines'));
- var _printDiffs = require('./printDiffs');
- var _constants = require('./constants');
- function _interopRequireDefault(obj) {
- return obj && obj.__esModule ? obj : {default: obj};
- }
- var Symbol = global['jest-symbol-do-not-touch'] || global.Symbol;
- function _objectSpread(target) {
- for (var i = 1; i < arguments.length; i++) {
- var source = arguments[i] != null ? arguments[i] : {};
- var ownKeys = Object.keys(source);
- if (typeof Object.getOwnPropertySymbols === 'function') {
- ownKeys = ownKeys.concat(
- Object.getOwnPropertySymbols(source).filter(function(sym) {
- return Object.getOwnPropertyDescriptor(source, sym).enumerable;
- })
- );
- }
- ownKeys.forEach(function(key) {
- _defineProperty(target, key, source[key]);
- });
- }
- return target;
- }
- function _defineProperty(obj, key, value) {
- if (key in obj) {
- Object.defineProperty(obj, key, {
- value: value,
- enumerable: true,
- configurable: true,
- writable: true
- });
- } else {
- obj[key] = value;
- }
- return obj;
- }
- const _prettyFormat$plugins = _prettyFormat.default.plugins,
- AsymmetricMatcher = _prettyFormat$plugins.AsymmetricMatcher,
- DOMCollection = _prettyFormat$plugins.DOMCollection,
- DOMElement = _prettyFormat$plugins.DOMElement,
- Immutable = _prettyFormat$plugins.Immutable,
- ReactElement = _prettyFormat$plugins.ReactElement,
- ReactTestComponent = _prettyFormat$plugins.ReactTestComponent;
- const PLUGINS = [
- ReactTestComponent,
- ReactElement,
- DOMElement,
- DOMCollection,
- Immutable,
- AsymmetricMatcher
- ];
- const FORMAT_OPTIONS = {
- plugins: PLUGINS
- };
- const FORMAT_OPTIONS_0 = _objectSpread({}, FORMAT_OPTIONS, {
- indent: 0
- });
- const FALLBACK_FORMAT_OPTIONS = {
- callToJSON: false,
- maxDepth: 10,
- plugins: PLUGINS
- };
- const FALLBACK_FORMAT_OPTIONS_0 = _objectSpread({}, FALLBACK_FORMAT_OPTIONS, {
- indent: 0
- }); // Generate a string that will highlight the difference between two values
- // with green and red. (similar to how github does code diffing)
- function diff(a, b, options) {
- if (Object.is(a, b)) {
- return _constants.NO_DIFF_MESSAGE;
- }
- const aType = (0, _jestGetType.default)(a);
- let expectedType = aType;
- let omitDifference = false;
- if (aType === 'object' && typeof a.asymmetricMatch === 'function') {
- if (a.$$typeof !== Symbol.for('jest.asymmetricMatcher')) {
- // Do not know expected type of user-defined asymmetric matcher.
- return null;
- }
- if (typeof a.getExpectedType !== 'function') {
- // For example, expect.anything() matches either null or undefined
- return null;
- }
- expectedType = a.getExpectedType(); // Primitive types boolean and number omit difference below.
- // For example, omit difference for expect.stringMatching(regexp)
- omitDifference = expectedType === 'string';
- }
- if (expectedType !== (0, _jestGetType.default)(b)) {
- return (
- ' Comparing two different types of values.' +
- ` Expected ${_chalk.default.green(expectedType)} but ` +
- `received ${_chalk.default.red((0, _jestGetType.default)(b))}.`
- );
- }
- if (omitDifference) {
- return null;
- }
- switch (aType) {
- case 'string':
- return (0, _diffLines.default)(a, b, options);
- case 'boolean':
- case 'number':
- return comparePrimitive(a, b, options);
- case 'map':
- return compareObjects(sortMap(a), sortMap(b), options);
- case 'set':
- return compareObjects(sortSet(a), sortSet(b), options);
- default:
- return compareObjects(a, b, options);
- }
- }
- function comparePrimitive(a, b, options) {
- return (0, _diffLines.default)(
- (0, _prettyFormat.default)(a, FORMAT_OPTIONS),
- (0, _prettyFormat.default)(b, FORMAT_OPTIONS),
- options
- );
- }
- function sortMap(map) {
- return new Map(Array.from(map.entries()).sort());
- }
- function sortSet(set) {
- return new Set(Array.from(set.values()).sort());
- }
- function compareObjects(a, b, options) {
- let diffMessage;
- let hasThrown = false;
- try {
- diffMessage = (0, _diffLines.default)(
- (0, _prettyFormat.default)(a, FORMAT_OPTIONS_0),
- (0, _prettyFormat.default)(b, FORMAT_OPTIONS_0),
- options,
- {
- a: (0, _prettyFormat.default)(a, FORMAT_OPTIONS),
- b: (0, _prettyFormat.default)(b, FORMAT_OPTIONS)
- }
- );
- } catch (e) {
- hasThrown = true;
- } // If the comparison yields no results, compare again but this time
- // without calling `toJSON`. It's also possible that toJSON might throw.
- if (!diffMessage || diffMessage === _constants.NO_DIFF_MESSAGE) {
- diffMessage = (0, _diffLines.default)(
- (0, _prettyFormat.default)(a, FALLBACK_FORMAT_OPTIONS_0),
- (0, _prettyFormat.default)(b, FALLBACK_FORMAT_OPTIONS_0),
- options,
- {
- a: (0, _prettyFormat.default)(a, FALLBACK_FORMAT_OPTIONS),
- b: (0, _prettyFormat.default)(b, FALLBACK_FORMAT_OPTIONS)
- }
- );
- if (diffMessage !== _constants.NO_DIFF_MESSAGE && !hasThrown) {
- diffMessage = _constants.SIMILAR_MESSAGE + '\n\n' + diffMessage;
- }
- }
- return diffMessage;
- } // eslint-disable-next-line no-redeclare
- diff.getStringDiff = _printDiffs.getStringDiff;
- module.exports = diff;
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