source: imaps-frontend/node_modules/get-intrinsic/test/GetIntrinsic.js@ d565449

'use strict';

var GetIntrinsic = require('../');

var test = require('tape');
var forEach = require('for-each');
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 mockProperty = require('mock-property');

var callBound = require('call-bind/callBound');
var v = require('es-value-fixtures');
var $gOPD = require('gopd');
var DefinePropertyOrThrow = require('es-abstract/2021/DefinePropertyOrThrow');

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%)"
        );

        t['throws'](
                function () { GetIntrinsic('%Array.prototype%garbage%'); },
                SyntaxError,
                'Throws with extra percent signs'
        );

        t['throws'](
                function () { GetIntrinsic('%Array.prototype%push%'); },
                SyntaxError,
                'Throws with extra percent signs, even on an existing intrinsic'
        );

        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) {
                        DefinePropertyOrThrow(Object.prototype, 'toString', {
                                '[[Value]]': function toString() {
                                        return original.apply(this, arguments);
                                }
                        });
                        st.equal(GetIntrinsic(name), original, name + ' yields original Object.prototype.toString');
                });

                DefinePropertyOrThrow(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) {
                        var restore = mockProperty(Object.prototype, 'propertyIsEnumerable', {
                                value: function propertyIsEnumerable() {
                                        return original.apply(this, arguments);
                                }
                        });
                        st.equal(GetIntrinsic(name), original, name + ' yields cached Object.prototype.propertyIsEnumerable');

                        restore();
                });

                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 === 0 }, 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();
});

test('%ThrowTypeError%', function (t) {
        var $ThrowTypeError = GetIntrinsic('%ThrowTypeError%');

        t.equal(typeof $ThrowTypeError, 'function', 'is a function');
        t['throws'](
                $ThrowTypeError,
                TypeError,
                '%ThrowTypeError% throws a TypeError'
        );

        t.end();
});

test('allowMissing', { skip: asyncGenFns.length > 0 }, function (t) {
        t['throws'](
                function () { GetIntrinsic('%AsyncGeneratorPrototype%'); },
                TypeError,
                'throws when missing'
        );

        t.equal(
                GetIntrinsic('%AsyncGeneratorPrototype%', true),
                undefined,
                'does not throw when allowMissing'
        );

        t.end();
});