122 lines
3.0 KiB
JavaScript
122 lines
3.0 KiB
JavaScript
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'use strict';
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var test = require('tape');
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var inspect = require('object-inspect');
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var forEach = require('for-each');
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var SLOT = require('../');
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test('assert', function (t) {
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forEach([null, undefined, true, false, 'foo', '', 42, 0], function (primitive) {
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t['throws'](
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function () { SLOT.assert(primitive, ''); },
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TypeError,
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inspect(primitive) + ' is not an Object'
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);
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});
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forEach([null, undefined, true, false, 42, 0, {}, [], function () {}, /a/g], function (nonString) {
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t['throws'](
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function () { SLOT.assert({}, nonString); },
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TypeError,
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inspect(nonString) + ' is not a String'
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);
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});
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t['throws'](
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function () { SLOT.assert({}, 'whatever'); },
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TypeError,
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'nonexistent slot throws'
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);
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var o = {};
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SLOT.set(o, 'x');
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t.doesNotThrow(function () { SLOT.assert(o, 'x'); }, 'existent slot noops');
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t['throws'](function () { SLOT.assert(o, 'y'); }, 'thing with a slot throws on a nonexistent slot');
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t.end();
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});
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test('has', function (t) {
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forEach([null, undefined, true, false, 'foo', '', 42, 0], function (primitive) {
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t['throws'](
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function () { SLOT.has(primitive, ''); },
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TypeError,
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inspect(primitive) + ' is not an Object'
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);
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});
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forEach([null, undefined, true, false, 42, 0, {}, [], function () {}, /a/g], function (nonString) {
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t['throws'](
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function () { SLOT.has({}, nonString); },
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TypeError,
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inspect(nonString) + ' is not a String'
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);
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});
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var o = {};
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t.equal(SLOT.has(o, 'nonexistent'), false, 'nonexistent slot yields false');
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SLOT.set(o, 'foo');
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t.equal(SLOT.has(o, 'foo'), true, 'existent slot yields true');
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t.end();
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});
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test('get', function (t) {
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forEach([null, undefined, true, false, 'foo', '', 42, 0], function (primitive) {
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t['throws'](
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function () { SLOT.get(primitive, ''); },
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TypeError,
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inspect(primitive) + ' is not an Object'
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);
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});
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forEach([null, undefined, true, false, 42, 0, {}, [], function () {}, /a/g], function (nonString) {
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t['throws'](
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function () { SLOT.get({}, nonString); },
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TypeError,
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inspect(nonString) + ' is not a String'
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);
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});
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var o = {};
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t.equal(SLOT.get(o, 'nonexistent'), undefined, 'nonexistent slot is undefined');
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var v = {};
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SLOT.set(o, 'f', v);
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t.equal(SLOT.get(o, 'f'), v, '"get" retrieves value set by "set"');
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t.end();
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});
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test('set', function (t) {
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forEach([null, undefined, true, false, 'foo', '', 42, 0], function (primitive) {
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t['throws'](
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function () { SLOT.set(primitive, ''); },
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TypeError,
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inspect(primitive) + ' is not an Object'
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);
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});
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forEach([null, undefined, true, false, 42, 0, {}, [], function () {}, /a/g], function (nonString) {
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t['throws'](
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function () { SLOT.set({}, nonString); },
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TypeError,
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inspect(nonString) + ' is not a String'
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);
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});
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var o = function () {};
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t.equal(SLOT.get(o, 'f'), undefined, 'slot not set');
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SLOT.set(o, 'f', 42);
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t.equal(SLOT.get(o, 'f'), 42, 'slot was set');
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SLOT.set(o, 'f', Infinity);
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t.equal(SLOT.get(o, 'f'), Infinity, 'slot was set again');
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t.end();
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});
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