fast-check
Version:
Property based testing framework for JavaScript (like QuickCheck)
53 lines (52 loc) • 2.46 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.keyValuePairsToObjectMapper = keyValuePairsToObjectMapper;
exports.keyValuePairsToObjectUnmapper = keyValuePairsToObjectUnmapper;
const globals_1 = require("../../../utils/globals");
const safeObjectCreate = Object.create;
const safeObjectDefineProperty = Object.defineProperty;
const safeObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
const safeObjectGetPrototypeOf = Object.getPrototypeOf;
const safeObjectGetOwnPropertySymbols = Object.getOwnPropertySymbols;
const safeObjectGetOwnPropertyNames = Object.getOwnPropertyNames;
const safeObjectEntries = Object.entries;
function keyValuePairsToObjectMapper(definition) {
const obj = definition[1] ? safeObjectCreate(null) : {};
for (const keyValue of definition[0]) {
safeObjectDefineProperty(obj, keyValue[0], {
enumerable: true,
configurable: true,
writable: true,
value: keyValue[1],
});
}
return obj;
}
function buildIsValidPropertyNameFilter(obj) {
return function isValidPropertyNameFilter(key) {
const descriptor = safeObjectGetOwnPropertyDescriptor(obj, key);
return (descriptor !== undefined &&
!!descriptor.configurable &&
!!descriptor.enumerable &&
!!descriptor.writable &&
descriptor.get === undefined &&
descriptor.set === undefined);
};
}
function keyValuePairsToObjectUnmapper(value) {
if (typeof value !== 'object' || value === null) {
throw new globals_1.Error('Incompatible instance received: should be a non-null object');
}
const hasNullPrototype = safeObjectGetPrototypeOf(value) === null;
const hasObjectPrototype = 'constructor' in value && value.constructor === Object;
if (!hasNullPrototype && !hasObjectPrototype) {
throw new globals_1.Error('Incompatible instance received: should be of exact type Object');
}
if (safeObjectGetOwnPropertySymbols(value).length > 0) {
throw new globals_1.Error('Incompatible instance received: should contain symbols');
}
if (!(0, globals_1.safeEvery)(safeObjectGetOwnPropertyNames(value), buildIsValidPropertyNameFilter(value))) {
throw new globals_1.Error('Incompatible instance received: should contain only c/e/w properties without get/set');
}
return [safeObjectEntries(value), hasNullPrototype];
}