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1 year ago
'use strict';
var test = require('tape');
var inspect = require('object-inspect');
var forEach = require('foreach');
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.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();
});