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setup-python/node_modules/jest-diff/build/index.js
Danny McCormick 39c08a0eaa Initial pass
2019-06-26 21:12:00 -04:00

196 lines
5.3 KiB
JavaScript

'use strict';
var _prettyFormat = _interopRequireDefault(require('pretty-format'));
var _chalk = _interopRequireDefault(require('chalk'));
var _jestGetType = _interopRequireDefault(require('jest-get-type'));
var _diffStrings = _interopRequireDefault(require('./diffStrings'));
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, _diffStrings.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, _diffStrings.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, _diffStrings.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, _diffStrings.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
module.exports = diff;