source: imaps-frontend/node_modules/internal-slot/test/index.js

'use strict';

var test = require('tape');
var inspect = require('object-inspect');
var forEach = require('for-each');

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

test('assert', function (t) {
        forEach([null, undefined, true, false, 'foo', '', 42, 0], function (primitive) {
                t['throws'](
                        function () { SLOT.assert(primitive, ''); },
                        TypeError,
                        inspect(primitive) + ' is not an Object'
                );
        });

        forEach([null, undefined, true, false, 42, 0, {}, [], function () {}, /a/g], function (nonString) {
                t['throws'](
                        function () { SLOT.assert({}, nonString); },
                        TypeError,
                        inspect(nonString) + ' is not a String'
                );
        });

        t['throws'](
                function () { SLOT.assert({}, 'whatever'); },
                TypeError,
                'nonexistent slot throws'
        );

        var o = {};
        SLOT.set(o, 'x');
        t.doesNotThrow(function () { SLOT.assert(o, 'x'); }, 'existent slot noops');
        t['throws'](function () { SLOT.assert(o, 'y'); }, 'thing with a slot throws on a nonexistent slot');

        t.end();
});

test('has', function (t) {
        forEach([null, undefined, true, false, 'foo', '', 42, 0], function (primitive) {
                t['throws'](
                        function () { SLOT.has(primitive, ''); },
                        TypeError,
                        inspect(primitive) + ' is not an Object'
                );
        });

        forEach([null, undefined, true, false, 42, 0, {}, [], function () {}, /a/g], function (nonString) {
                t['throws'](
                        function () { SLOT.has({}, nonString); },
                        TypeError,
                        inspect(nonString) + ' is not a String'
                );
        });

        var o = {};

        t.equal(SLOT.has(o, 'nonexistent'), false, 'nonexistent slot yields false');

        SLOT.set(o, 'foo');
        t.equal(SLOT.has(o, 'foo'), true, 'existent slot yields true');

        t.end();
});

test('get', function (t) {
        forEach([null, undefined, true, false, 'foo', '', 42, 0], function (primitive) {
                t['throws'](
                        function () { SLOT.get(primitive, ''); },
                        TypeError,
                        inspect(primitive) + ' is not an Object'
                );
        });

        forEach([null, undefined, true, false, 42, 0, {}, [], function () {}, /a/g], function (nonString) {
                t['throws'](
                        function () { SLOT.get({}, nonString); },
                        TypeError,
                        inspect(nonString) + ' is not a String'
                );
        });

        var o = {};
        t.equal(SLOT.get(o, 'nonexistent'), undefined, 'nonexistent slot is undefined');

        var v = {};
        SLOT.set(o, 'f', v);
        t.equal(SLOT.get(o, 'f'), v, '"get" retrieves value set by "set"');

        t.end();
});

test('set', function (t) {
        forEach([null, undefined, true, false, 'foo', '', 42, 0], function (primitive) {
                t['throws'](
                        function () { SLOT.set(primitive, ''); },
                        TypeError,
                        inspect(primitive) + ' is not an Object'
                );
        });

        forEach([null, undefined, true, false, 42, 0, {}, [], function () {}, /a/g], function (nonString) {
                t['throws'](
                        function () { SLOT.set({}, nonString); },
                        TypeError,
                        inspect(nonString) + ' is not a String'
                );
        });

        var o = function () {};
        t.equal(SLOT.get(o, 'f'), undefined, 'slot not set');

        SLOT.set(o, 'f', 42);
        t.equal(SLOT.get(o, 'f'), 42, 'slot was set');

        SLOT.set(o, 'f', Infinity);
        t.equal(SLOT.get(o, 'f'), Infinity, 'slot was set again');

        t.end();
});