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rOACCT/node_modules/get-intrinsic/test/GetIntrinsic.js
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GetIntrinsic.js
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'use strict';
var GetIntrinsic = require('../');
var test = require('tape');
var forEach = require('foreach');
var debug = require('object-inspect');
var generatorFns = require('make-generator-function')();
var asyncFns = require('make-async-function').list();
var asyncGenFns = require('make-async-generator-function')();
var callBound = require('es-abstract/helpers/callBound');
var v = require('es-value-fixtures');
var $gOPD = require('es-abstract/helpers/getOwnPropertyDescriptor');
var defineProperty = require('es-abstract/test/helpers/defineProperty');
var $isProto = callBound('%Object.prototype.isPrototypeOf%');
test('export', function (t) {
t.equal(typeof GetIntrinsic, 'function', 'it is a function');
t.equal(GetIntrinsic.length, 2, 'function has length of 2');
t.end();
});
test('throws', function (t) {
t['throws'](
function () { GetIntrinsic('not an intrinsic'); },
SyntaxError,
'nonexistent intrinsic throws a syntax error'
);
t['throws'](
function () { GetIntrinsic(''); },
TypeError,
'empty string intrinsic throws a type error'
);
t['throws'](
function () { GetIntrinsic('.'); },
SyntaxError,
'"just a dot" intrinsic throws a syntax error'
);
t['throws'](
function () { GetIntrinsic('%String'); },
SyntaxError,
'Leading % without trailing % throws a syntax error'
);
t['throws'](
function () { GetIntrinsic('String%'); },
SyntaxError,
'Trailing % without leading % throws a syntax error'
);
t['throws'](
function () { GetIntrinsic("String['prototype]"); },
SyntaxError,
'Dynamic property access is disallowed for intrinsics (unterminated string)'
);
t['throws'](
function () { GetIntrinsic('%Proxy.prototype.undefined%'); },
TypeError,
"Throws when middle part doesn't exist (%Proxy.prototype.undefined%)"
);
forEach(v.nonStrings, function (nonString) {
t['throws'](
function () { GetIntrinsic(nonString); },
TypeError,
debug(nonString) + ' is not a String'
);
});
forEach(v.nonBooleans, function (nonBoolean) {
t['throws'](
function () { GetIntrinsic('%', nonBoolean); },
TypeError,
debug(nonBoolean) + ' is not a Boolean'
);
});
forEach([
'toString',
'propertyIsEnumerable',
'hasOwnProperty'
], function (objectProtoMember) {
t['throws'](
function () { GetIntrinsic(objectProtoMember); },
SyntaxError,
debug(objectProtoMember) + ' is not an intrinsic'
);
});
t.end();
});
test('base intrinsics', function (t) {
t.equal(GetIntrinsic('%Object%'), Object, '%Object% yields Object');
t.equal(GetIntrinsic('Object'), Object, 'Object yields Object');
t.equal(GetIntrinsic('%Array%'), Array, '%Array% yields Array');
t.equal(GetIntrinsic('Array'), Array, 'Array yields Array');
t.end();
});
test('dotted paths', function (t) {
t.equal(GetIntrinsic('%Object.prototype.toString%'), Object.prototype.toString, '%Object.prototype.toString% yields Object.prototype.toString');
t.equal(GetIntrinsic('Object.prototype.toString'), Object.prototype.toString, 'Object.prototype.toString yields Object.prototype.toString');
t.equal(GetIntrinsic('%Array.prototype.push%'), Array.prototype.push, '%Array.prototype.push% yields Array.prototype.push');
t.equal(GetIntrinsic('Array.prototype.push'), Array.prototype.push, 'Array.prototype.push yields Array.prototype.push');
test('underscore paths are aliases for dotted paths', { skip: !Object.isFrozen || Object.isFrozen(Object.prototype) }, function (st) {
var original = GetIntrinsic('%ObjProto_toString%');
forEach([
'%Object.prototype.toString%',
'Object.prototype.toString',
'%ObjectPrototype.toString%',
'ObjectPrototype.toString',
'%ObjProto_toString%',
'ObjProto_toString'
], function (name) {
defineProperty(Object.prototype, 'toString', {
value: function toString() {
return original.apply(this, arguments);
}
});
st.equal(GetIntrinsic(name), original, name + ' yields original Object.prototype.toString');
});
defineProperty(Object.prototype, 'toString', { value: original });
st.end();
});
test('dotted paths cache', { skip: !Object.isFrozen || Object.isFrozen(Object.prototype) }, function (st) {
var original = GetIntrinsic('%Object.prototype.propertyIsEnumerable%');
forEach([
'%Object.prototype.propertyIsEnumerable%',
'Object.prototype.propertyIsEnumerable',
'%ObjectPrototype.propertyIsEnumerable%',
'ObjectPrototype.propertyIsEnumerable'
], function (name) {
// eslint-disable-next-line no-extend-native
Object.prototype.propertyIsEnumerable = function propertyIsEnumerable() {
return original.apply(this, arguments);
};
st.equal(GetIntrinsic(name), original, name + ' yields cached Object.prototype.propertyIsEnumerable');
});
// eslint-disable-next-line no-extend-native
Object.prototype.propertyIsEnumerable = original;
st.end();
});
test('dotted path reports correct error', function (st) {
st['throws'](function () {
GetIntrinsic('%NonExistentIntrinsic.prototype.property%');
}, /%NonExistentIntrinsic%/, 'The base intrinsic of %NonExistentIntrinsic.prototype.property% is %NonExistentIntrinsic%');
st['throws'](function () {
GetIntrinsic('%NonExistentIntrinsicPrototype.property%');
}, /%NonExistentIntrinsicPrototype%/, 'The base intrinsic of %NonExistentIntrinsicPrototype.property% is %NonExistentIntrinsicPrototype%');
st.end();
});
t.end();
});
test('accessors', { skip: !$gOPD || typeof Map !== 'function' }, function (t) {
var actual = $gOPD(Map.prototype, 'size');
t.ok(actual, 'Map.prototype.size has a descriptor');
t.equal(typeof actual.get, 'function', 'Map.prototype.size has a getter function');
t.equal(GetIntrinsic('%Map.prototype.size%'), actual.get, '%Map.prototype.size% yields the getter for it');
t.equal(GetIntrinsic('Map.prototype.size'), actual.get, 'Map.prototype.size yields the getter for it');
t.end();
});
test('generator functions', { skip: !generatorFns.length }, function (t) {
var $GeneratorFunction = GetIntrinsic('%GeneratorFunction%');
var $GeneratorFunctionPrototype = GetIntrinsic('%Generator%');
var $GeneratorPrototype = GetIntrinsic('%GeneratorPrototype%');
forEach(generatorFns, function (genFn) {
var fnName = genFn.name;
fnName = fnName ? "'" + fnName + "'" : 'genFn';
t.ok(genFn instanceof $GeneratorFunction, fnName + ' instanceof %GeneratorFunction%');
t.ok($isProto($GeneratorFunctionPrototype, genFn), '%Generator% is prototype of ' + fnName);
t.ok($isProto($GeneratorPrototype, genFn.prototype), '%GeneratorPrototype% is prototype of ' + fnName + '.prototype');
});
t.end();
});
test('async functions', { skip: !asyncFns.length }, function (t) {
var $AsyncFunction = GetIntrinsic('%AsyncFunction%');
var $AsyncFunctionPrototype = GetIntrinsic('%AsyncFunctionPrototype%');
forEach(asyncFns, function (asyncFn) {
var fnName = asyncFn.name;
fnName = fnName ? "'" + fnName + "'" : 'asyncFn';
t.ok(asyncFn instanceof $AsyncFunction, fnName + ' instanceof %AsyncFunction%');
t.ok($isProto($AsyncFunctionPrototype, asyncFn), '%AsyncFunctionPrototype% is prototype of ' + fnName);
});
t.end();
});
test('async generator functions', { skip: !asyncGenFns.length }, function (t) {
var $AsyncGeneratorFunction = GetIntrinsic('%AsyncGeneratorFunction%');
var $AsyncGeneratorFunctionPrototype = GetIntrinsic('%AsyncGenerator%');
var $AsyncGeneratorPrototype = GetIntrinsic('%AsyncGeneratorPrototype%');
forEach(asyncGenFns, function (asyncGenFn) {
var fnName = asyncGenFn.name;
fnName = fnName ? "'" + fnName + "'" : 'asyncGenFn';
t.ok(asyncGenFn instanceof $AsyncGeneratorFunction, fnName + ' instanceof %AsyncGeneratorFunction%');
t.ok($isProto($AsyncGeneratorFunctionPrototype, asyncGenFn), '%AsyncGenerator% is prototype of ' + fnName);
t.ok($isProto($AsyncGeneratorPrototype, asyncGenFn.prototype), '%AsyncGeneratorPrototype% is prototype of ' + fnName + '.prototype');
});
t.end();
});
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