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'use strict';
var test = require('tape');
require('./_tape');
var assign = require('object.assign');
var gOPDs = require('object.getownpropertydescriptors');
var hasSymbols = require('has-symbols')();
var hasTypedArrays = require('has-typed-arrays')();
var semver = require('semver');
var keys = require('object-keys');
var availableTypedArrays = require('available-typed-arrays')();
var forEach = require('for-each');
var hasProto = require('has-proto')();
var defineDataProperty = require('define-data-property');
var safeBuffer = typeof Buffer === 'function' ? Buffer.from && Buffer.from.length > 1 ? Buffer.from : Buffer : null;
var buffersAreTypedArrays = typeof Buffer === 'function' && new Buffer(0) instanceof Uint8Array;
var isNode = typeof process === 'object' && typeof process.version === 'string';
function tag(obj, value) {
if (hasSymbols && Symbol.toStringTag && Object.defineProperty) {
Object.defineProperty(obj, Symbol.toStringTag, {
value: value
});
}
return obj;
}
test('equal', function (t) {
t.deepEqualTest(
{ a: [2, 3], b: [4] },
{ a: [2, 3], b: [4] },
'two equal objects',
true,
true,
false
);
var obj1 = { a: [2, 3], b: [4] };
var obj2 = { b: [4], a: [2, 3] };
t.notDeepEqual(keys(obj1), keys(obj2), 'keys are in a different order');
t.deepEqual(keys(obj1), keys(obj2).reverse(), 'keys are in opposite order');
t.deepEqualTest(
obj1,
obj2,
'two equal objects, in different order',
true,
true
);
t.deepEqualTest(
{ a: 2, b: '4' },
{ a: 2, b: 4 },
'two loosely equal, strictly inequal objects',
true,
false
);
t.deepEqualTest(
{ a: 2, b: 4 },
{ a: 2, B: 4 },
'two inequal objects',
false,
false
);
t.deepEqualTest(
'-000',
false,
'`false` and `"-000"`',
true,
false
);
t.end();
});
test('Maps', { skip: typeof Map !== 'function' }, function (t) {
t.deepEqualTest(
new Map([['a', 1], ['b', 2]]),
new Map([['b', 2], ['a', 1]]),
'two equal Maps',
true,
true
);
t.deepEqualTest(
new Map([['a', [1, 2]]]),
new Map([['a', [2, 1]]]),
'two Maps with inequal values on the same key',
true,
true
);
t.deepEqualTest(
new Map([['a', 1]]),
new Map([['b', 1]]),
'two inequal Maps',
true,
true
);
t.deepEqualTest(
new Map([[{}, 3], [{}, 2], [{}, 1]]),
new Map([[{}, 1], [{}, 2], [{}, 3]]),
'two equal Maps in different orders with object keys',
true,
true
);
t.deepEqualTest(
new Map([[undefined, undefined]]),
new Map([[undefined, null]]),
'undefined keys, nullish values, loosely equal, strictly inequal',
true,
true
);
t.deepEqualTest(
new Map([[{}, null], [true, 2], [{}, 1], [undefined, {}]]),
new Map([[{}, 1], [true, 2], [{}, null], [undefined, {}]]),
'two equal Maps in different orders with primitive keys',
true,
true
);
t.deepEqualTest(
new Map([[false, 3], [{}, 2], [{}, 1]]),
new Map([[{}, 1], [{}, 2], [false, 3]]),
'two equal Maps in different orders with a mix of keys',
true,
true
);
t.deepEqualTest(
new Map([[null, undefined]]),
new Map([[null, null]]),
'null keys, nullish values, loosely equal, strictly inequal',
true,
true
);
t.deepEqualTest(
new Map([[undefined, 3]]),
new Map([[null, 3]]),
'nullish keys, loosely equal, strictly inequal',
true,
true
);
t.deepEqualTest(
new Map([[{}, null], [true, 2], [{}, 1], [undefined, {}]]),
new Map([[{}, 1], [true, 2], [{}, null], [undefined, {}]]),
'two equal Maps in different orders with primitive keys',
true,
true
);
t.deepEqualTest(
new Map([[false, 3], [{}, 2], [{}, 1]]),
new Map([[{}, 1], [{}, 2], [false, 3]]),
'two equal Maps in different orders with a mix of keys',
true,
true
);
t.deepEqualTest(
new Map(),
new Map([[{}, 1]]),
'two inequal Maps',
true,
true
);
t.deepEqualTest(
new Map([[{}, null], [false, 3]]),
new Map([[{}, null], [true, 2]]),
'two inequal maps, same size, primitive key, start with object key',
true,
true
);
t.deepEqualTest(
new Map([[false, 3], [{}, null]]),
new Map([[true, 2], [{}, null]]),
'two inequal maps, same size, primitive key, start with primitive key',
true,
true
);
t.deepEqualTest(
new Map([[undefined, null], ['+000', 2]]),
new Map([[null, undefined], [false, '2']]),
'primitive comparisons',
true,
true
);
t.end();
});
test('WeakMaps', { skip: typeof WeakMap !== 'function' }, function (t) {
t.deepEqualTest(
new WeakMap([[Object, null], [Function, true]]),
new WeakMap([[Function, true], [Object, null]]),
'two equal WeakMaps',
true,
true
);
t.deepEqualTest(
new WeakMap([[Object, null]]),
new WeakMap([[Object, true]]),
'two WeakMaps with inequal values on the same key',
true,
true
);
t.deepEqualTest(
new WeakMap([[Object, null], [Function, true]]),
new WeakMap([[Object, null]]),
'two inequal WeakMaps',
true,
true
);
t.end();
});
test('Sets', { skip: typeof Set !== 'function' }, function (t) {
t.deepEqualTest(
new Set(['a', 1, 'b', 2]),
new Set(['b', 2, 'a', 1]),
'two equal Sets',
true,
true
);
t.deepEqualTest(
new Set(['a', 1]),
new Set(['b', 1]),
'two inequal Sets',
true,
true
);
t.deepEqualTest(
new Set([{}, 1, {}, {}, 2]),
new Set([{}, 1, {}, 2, {}]),
'two equal Sets in different orders',
true,
true
);
t.deepEqualTest(
new Set(),
new Set([1]),
'two inequally sized Sets',
true,
true
);
t.deepEqualTest(
new Set([{ a: 1 }, 2]),
new Set(['2', { a: '1' }]),
'two loosely equal, strictly inequal Sets',
true,
true
);
t.deepEqualTest(
new Set([{ a: 1 }, 2]),
new Set(['2', { a: 2 }]),
'two inequal Sets',
true,
true
);
t.deepEqualTest(
new Set([null, '', 1, 5, 2, false]),
new Set([undefined, 0, '5', true, '2', '-000']),
'more primitive comparisons',
true,
true
);
t.end();
});
test('Set and Map', { skip: !Object.defineProperty || typeof Set !== 'function' || typeof Map !== 'function' }, function (t) {
t.deepEqualTest(
new Set(),
new Map(),
'Map and Set',
true,
true
);
var maplikeSet = new Set();
Object.defineProperty(maplikeSet, 'constructor', { enumerable: false, value: Map });
maplikeSet.__proto__ = Map.prototype; // eslint-disable-line no-proto
t.deepEqualTest(
maplikeSet,
new Map(),
'Map-like Set, and Map',
true,
true
);
t.end();
});
test('WeakSets', { skip: typeof WeakSet !== 'function' }, function (t) {
t.deepEqualTest(
new WeakSet([Object, Function]),
new WeakSet([Function, Object]),
'two equal WeakSets',
true,
true
);
t.deepEqualTest(
new WeakSet([Object, Function]),
new WeakSet([Object]),
'two inequal WeakSets',
true,
true
);
t.end();
});
test('not equal', function (t) {
t.deepEqualTest(
{ x: 5, y: [6] },
{ x: 5, y: 6 },
'two inequal objects are',
false,
false
);
t.end();
});
test('nested nulls', function (t) {
t.deepEqualTest(
[null, null, null],
[null, null, null],
'same-length arrays of nulls',
true,
true,
true
);
t.end();
});
test('objects with strings vs numbers', function (t) {
t.deepEqualTest(
[{ a: 3 }, { b: 4 }],
[{ a: '3' }, { b: '4' }],
'objects with equivalent string/number values',
true,
false
);
t.end();
});
test('non-objects', function (t) {
t.deepEqualTest(3, 3, 'same numbers', true, true, true);
t.deepEqualTest('beep', 'beep', 'same strings', true, true, true);
t.deepEqualTest('3', 3, 'numeric string and number', true, false);
t.deepEqualTest('3', [3], 'numeric string and array containing number', false, false);
t.deepEqualTest(3, [3], 'number and array containing number', false, false);
t.end();
});
test('infinities', function (t) {
t.deepEqualTest(Infinity, Infinity, '∞ and ∞', true, true, true);
t.deepEqualTest(-Infinity, -Infinity, '-∞ and -∞', true, true, true);
t.deepEqualTest(Infinity, -Infinity, '∞ and -∞', false, false);
t.end();
});
test('arguments class', function (t) {
function getArgs() {
return arguments;
}
t.deepEqualTest(
getArgs(1, 2, 3),
getArgs(1, 2, 3),
'equivalent arguments objects are equal',
true,
true,
true
);
t.deepEqualTest(
getArgs(1, 2, 3),
[1, 2, 3],
'array and arguments with same contents',
false,
false
);
var args = getArgs();
var notArgs = tag({ length: 0 }, 'Arguments');
t.deepEqualTest(
args,
notArgs,
'args and similar arraylike object',
false,
false
);
t.end();
});
test('Dates', function (t) {
var d0 = new Date(1387585278000);
var d1 = new Date('Fri Dec 20 2013 16:21:18 GMT-0800 (PST)');
t.deepEqualTest(d0, d1, 'two Dates with the same timestamp', true, true);
d1.a = true;
t.deepEqualTest(d0, d1, 'two Dates with the same timestamp but different own properties', true, true);
t.test('overriding `getTime`', { skip: !Object.defineProperty }, function (st) {
var a = new Date('2000');
var b = new Date('2000');
Object.defineProperty(a, 'getTime', { value: function () { return 5; } });
st.deepEqualTest(a, b, 'two Dates with the same timestamp but one has overridden `getTime`', true, true);
st.end();
});
t.test('fake Date', { skip: !hasProto }, function (st) {
var a = new Date(2000);
var b = tag(Object.create(
a.__proto__, // eslint-disable-line no-proto
gOPDs(a)
), 'Date');
st.deepEqualTest(
a,
b,
'Date, and fake Date',
true,
true
);
st.end();
});
var a = new Date('2000');
var b = new Date('2000');
b.foo = true;
t.deepEqualTest(
a,
b,
'two identical Dates, one with an extra property',
true,
true
);
t.deepEqualTest(
new Date('2000'),
new Date('2001'),
'two inequal Dates',
false,
false
);
t.end();
});
test('buffers', { skip: typeof Buffer !== 'function' }, function (t) {
/* eslint no-buffer-constructor: 1, new-cap: 1 */
t.deepEqualTest(
safeBuffer('xyz'),
safeBuffer('xyz'),
'buffers with same contents are equal',
true,
true
);
t.deepEqualTest(
safeBuffer('xyz'),
safeBuffer('xyy'),
'buffers with same length and different contents are inequal',
false,
false
);
t.deepEqualTest(
safeBuffer('xyz'),
safeBuffer('xy'),
'buffers with different length are inequal',
false,
false
);
t.deepEqualTest(
safeBuffer('abc'),
safeBuffer('xyz'),
'buffers with different contents',
false,
false
);
var emptyBuffer = safeBuffer('');
t.deepEqualTest(
emptyBuffer,
[],
'empty buffer and empty array',
false,
false
);
t.test('bufferlikes', { skip: !Object.defineProperty || !hasTypedArrays }, function (st) {
var fakeBuffer = {
0: 'a',
length: 1,
__proto__: emptyBuffer.__proto__, // eslint-disable-line no-proto
copy: emptyBuffer.copy,
slice: emptyBuffer.slice
};
Object.defineProperty(fakeBuffer, '0', { enumerable: false });
Object.defineProperty(fakeBuffer, 'length', { enumerable: false });
Object.defineProperty(fakeBuffer, 'copy', { enumerable: false });
Object.defineProperty(fakeBuffer, 'slice', { enumerable: false });
st.deepEqualTest(
safeBuffer('a'),
fakeBuffer,
'real buffer, and mildly fake buffer',
false,
false
);
st.test('bufferlike', { skip: buffersAreTypedArrays ? !hasSymbols || !Symbol.toStringTag : false }, function (s2t) {
var bufferlike = buffersAreTypedArrays ? new Uint8Array() : {};
Object.defineProperty(bufferlike, 'length', {
enumerable: false,
value: bufferlike.length || 0
});
Object.defineProperty(bufferlike, 'copy', {
enumerable: false,
value: emptyBuffer.copy
});
bufferlike.__proto__ = emptyBuffer.__proto__; // eslint-disable-line no-proto
s2t.deepEqualTest(
emptyBuffer,
bufferlike,
'empty buffer and empty bufferlike',
true,
true
);
s2t.end();
});
st.end();
});
t.end();
});
test('Arrays', function (t) {
var a = [];
var b = [];
b.foo = true;
t.deepEqualTest(
a,
b,
'two identical arrays, one with an extra property',
false,
false
);
t.end();
});
test('booleans', function (t) {
t.deepEqualTest(
true,
true,
'trues',
true,
true,
false
);
t.deepEqualTest(
false,
false,
'falses',
true,
true,
false
);
t.deepEqualTest(
true,
false,
'true and false',
false,
false
);
t.end();
});
test('booleans and arrays', function (t) {
t.deepEqualTest(
true,
[],
'true and an empty array',
false,
false
);
t.deepEqualTest(
false,
[],
'false and an empty array',
true,
false
);
t.end();
});
test('arrays initiated', function (t) {
var a0 = [
undefined,
null,
-1,
0,
1,
false,
true,
undefined,
'',
'abc',
null,
undefined
];
var a1 = [
undefined,
null,
-1,
0,
1,
false,
true,
undefined,
'',
'abc',
null,
undefined
];
t.deepEqualTest(
a0,
a1,
'arrays with equal contents are equal',
true,
true,
true
);
t.end();
});
test('arrays assigned', function (t) {
var a0 = [
undefined,
null,
-1,
0,
1,
false,
true,
undefined,
'',
'abc',
null,
undefined
];
var a1 = [];
a1[0] = undefined;
a1[1] = null;
a1[2] = -1;
a1[3] = 0;
a1[4] = 1;
a1[5] = false;
a1[6] = true;
a1[7] = undefined;
a1[8] = '';
a1[9] = 'abc';
a1[10] = null;
a1[11] = undefined;
a1.length = 12;
t.deepEqualTest(a0, a1, 'a literal array and an assigned array', true, true);
t.end();
});
test('arrays push', function (t) {
var a0 = [
undefined,
null,
-1,
0,
1,
false,
true,
undefined,
'',
'abc',
null,
undefined
],
a1 = [];
a1.push(undefined);
a1.push(null);
a1.push(-1);
a1.push(0);
a1.push(1);
a1.push(false);
a1.push(true);
a1.push(undefined);
a1.push('');
a1.push('abc');
a1.push(null);
a1.push(undefined);
a1.length = 12;
t.deepEqualTest(a0, a1, 'a literal array and a pushed array', true, true);
t.end();
});
test('null == undefined', function (t) {
t.deepEqualTest(null, undefined, 'null and undefined', true, false);
t.deepEqualTest([null], [undefined], '[null] and [undefined]', true, false);
t.end();
});
// node 14 changed `deepEqual` to make two NaNs loosely equal. TODO, semver-major: change deep-equal in the same way.
var isNode14 = isNode && process.env.ASSERT && semver.satisfies(process.version, '>= 14');
test('NaNs', function (t) {
t.deepEqualTest(
NaN,
NaN,
'two NaNs',
isNode14,
true
);
t.deepEqualTest(
{ a: NaN },
{ a: NaN },
'two equiv objects with a NaN value',
isNode14,
true
);
t.deepEqualTest(NaN, 1, 'NaN and 1', false, false);
t.end();
});
test('zeroes', function (t) {
t.deepEqualTest(0, -0, '0 and -0', true, false);
t.deepEqualTest({ a: 0 }, { a: -0 }, 'two objects with a same-keyed 0/-0 value', true, false);
t.end();
});
test('Object.create', { skip: !Object.create }, function (t) {
var a = { a: 'A' };
var b = Object.create(a);
b.b = 'B';
var c = Object.create(a);
c.b = 'C';
t.deepEqualTest(
b,
c,
'two objects with the same [[Prototype]] but a different own property',
false,
false
);
t.end();
});
test('Object.create(null)', { skip: !Object.create }, function (t) {
t.deepEqualTest(
Object.create(null),
Object.create(null),
'two empty null objects',
true,
true,
true
);
t.deepEqualTest(
Object.create(null, { a: { value: 'b' } }),
Object.create(null, { a: { value: 'b' } }),
'two null objects with the same property pair',
true,
true,
true
);
t.end();
});
test('regexes vs dates', function (t) {
var d = new Date(1387585278000);
var r = /abc/;
t.deepEqualTest(d, r, 'Date and RegExp', false, false);
t.end();
});
test('regexen', function (t) {
t.deepEqualTest(/abc/, /xyz/, 'two different regexes', false, false);
t.deepEqualTest(/abc/, /abc/, 'two abc regexes', true, true, false);
t.deepEqualTest(/xyz/, /xyz/, 'two xyz regexes', true, true, false);
t.test('fake RegExp', { skip: !hasProto }, function (st) {
var a = /abc/g;
var b = tag(Object.create(
a.__proto__, // eslint-disable-line no-proto
gOPDs(a)
), 'RegExp');
st.deepEqualTest(a, b, 'regex and fake regex', false, false);
st.end();
});
var a = /abc/gi;
var b = /abc/gi;
b.foo = true;
t.deepEqualTest(
a,
b,
'two identical regexes, one with an extra property',
true,
true
);
var c = /abc/g;
var d = /abc/i;
t.deepEqualTest(
c,
d,
'two regexes with the same source but different flags',
false,
false
);
t.end();
});
test('object literals', function (t) {
t.deepEqualTest(
{ prototype: 2 },
{ prototype: '2' },
'two loosely equal, strictly inequal prototype properties',
false,
false
);
t.end();
});
test('arrays and objects', function (t) {
t.deepEqualTest([], {}, 'empty array and empty object', true, true);
t.deepEqualTest([], { length: 0 }, 'empty array and empty arraylike object', false, false);
t.deepEqualTest([1], { 0: 1 }, 'array and similar object', true, true);
t.end();
});
test('functions', function (t) {
function f() {}
t.deepEqualTest(f, f, 'a function and itself', true, true, true);
t.deepEqualTest([f], [f], 'a function and itself in an array', true, true, true);
t.deepEqualTest(function () {}, function () {}, 'two distinct functions', false, false, true);
t.deepEqualTest([function () {}], [function () {}], 'two distinct functions in an array', false, false, true);
t.deepEqualTest(f, {}, 'function and object', false, false, true);
t.deepEqualTest([f], [{}], 'function and object in an array', false, false, true);
t.end();
});
test('Errors', function (t) {
t.deepEqualTest(new Error('xyz'), new Error('xyz'), 'two errors of the same type with the same message', true, true, false);
t.deepEqualTest(new Error('xyz'), new TypeError('xyz'), 'two errors of different types with the same message', true, true);
t.deepEqualTest(new Error('xyz'), new Error('zyx'), 'two errors of the same type with a different message', true, true);
t.test('errorlike', { skip: !Object.defineProperty }, function (st) {
var err = new Error('foo');
// TODO: add `__proto__` when brand check is available
var errorlike = tag({ message: err.message, stack: err.stack, name: err.name, constructor: err.constructor }, 'Error');
Object.defineProperty(errorlike, 'message', { enumerable: false });
Object.defineProperty(errorlike, 'stack', { enumerable: false });
Object.defineProperty(errorlike, 'name', { enumerable: false });
Object.defineProperty(errorlike, 'constructor', { enumerable: false });
st.notOk(errorlike instanceof Error);
st.ok(err instanceof Error);
st.deepEqualTest(
err,
errorlike,
'error, and errorlike object',
true,
true
);
st.end();
});
t.deepEqualTest(
new Error('a'),
assign(new Error('a'), { code: 10 }),
'two otherwise equal errors with different own properties',
false,
false
);
t.test('fake error', { skip: !process.env.ASSERT || !hasProto }, function (st) {
var a = tag({
__proto__: null
}, 'Error');
var b = new RangeError('abc');
b.__proto__ = null; // eslint-disable-line no-proto
st.deepEqualTest(
a,
b,
'null object faking as an Error, RangeError with null proto',
false,
false
);
st.end();
});
t.end();
});
test('object and null', function (t) {
t.deepEqualTest(
{},
null,
'null and an object',
false,
false
);
t.end();
});
test('errors', function (t) {
t.end();
});
test('error = Object', function (t) {
t.deepEqualTest(
new Error('a'),
{ message: 'a' },
false,
false
);
t.end();
});
test('[[Prototypes]]', function (t) {
function C() {}
var instance = new C();
delete instance.constructor;
t.deepEqualTest({}, instance, 'two identical objects with different [[Prototypes]]', true, true);
t.test('Dates with different prototypes', { skip: !hasProto }, function (st) {
var d1 = new Date(0);
var d2 = new Date(0);
st.deepEqualTest(d1, d2, 'two dates with the same timestamp', true, true);
var newProto = {
__proto__: Date.prototype
};
d2.__proto__ = newProto; // eslint-disable-line no-proto
st.ok(d2 instanceof Date, 'd2 is still a Date instance after tweaking [[Prototype]]');
st.deepEqualTest(d1, d2, 'two dates with the same timestamp and different [[Prototype]]', true, true);
st.end();
});
t.end();
});
test('toStringTag', { skip: !hasSymbols || !Symbol.toStringTag }, function (t) {
var o1 = {};
t.equal(Object.prototype.toString.call(o1), '[object Object]', 'o1: Symbol.toStringTag works');
var o2 = {};
t.equal(Object.prototype.toString.call(o2), '[object Object]', 'o2: original Symbol.toStringTag works');
t.deepEqualTest(o1, o2, 'two normal empty objects', true, true);
o2[Symbol.toStringTag] = 'jifasnif';
t.equal(Object.prototype.toString.call(o2), '[object jifasnif]', 'o2: modified Symbol.toStringTag works');
t.deepEqualTest(o1, o2, 'two normal empty objects with different toStringTags', true, true);
t.end();
});
test('boxed primitives', function (t) {
t.deepEqualTest(Object(false), false, 'boxed and primitive `false`', true, false);
t.deepEqualTest(Object(true), true, 'boxed and primitive `true`', false, false);
t.deepEqualTest(Object(3), 3, 'boxed and primitive `3`', false, false);
t.deepEqualTest(Object(NaN), NaN, 'boxed and primitive `NaN`', false, false);
t.deepEqualTest(Object(''), '', 'boxed and primitive `""`', true, false);
t.deepEqualTest(Object('str'), 'str', 'boxed and primitive `"str"`', false, false);
t.test('symbol', { skip: !hasSymbols }, function (st) {
var s = Symbol('');
st.deepEqualTest(Object(s), s, 'boxed and primitive `Symbol()`', false, false);
st.end();
});
t.test('bigint', { skip: typeof BigInt !== 'function' }, function (st) {
var hhgtg = BigInt(42);
st.deepEqualTest(Object(hhgtg), hhgtg, 'boxed and primitive `BigInt(42)`', false, false);
st.end();
});
t.test('`valueOf` is called for boxed primitives', function (st) {
var a = Object(5);
a.valueOf = function () { throw new Error('failed'); };
var b = Object(5);
b.valueOf = function () { throw new Error('failed'); };
st.deepEqualTest(a, b, 'two boxed numbers with a thrower valueOf', false, false);
st.end();
});
t.end();
});
test('getters', { skip: !Object.defineProperty }, function (t) {
var a = {};
Object.defineProperty(a, 'a', { enumerable: true, get: function () { return 5; } });
var b = {};
Object.defineProperty(b, 'a', { enumerable: true, get: function () { return 6; } });
t.deepEqualTest(a, b, 'two objects with the same getter but producing different values', false, false);
t.end();
});
var isBrokenNode = isNode && process.env.ASSERT && semver.satisfies(process.version, '<= 13.3.0');
test('fake arrays: extra keys will be tested', { skip: !hasProto || isBrokenNode }, function (t) {
var a = tag({
__proto__: Array.prototype,
0: 1,
1: 1,
2: 'broken',
length: 2
}, 'Array');
if (Object.defineProperty) {
Object.defineProperty(a, 'length', {
enumerable: false
});
}
t.deepEqualTest(a, [1, 1], 'fake and real array with same contents and [[Prototype]]', false, false);
var b = tag(/abc/, 'Array');
b.__proto__ = Array.prototype; // eslint-disable-line no-proto
b.length = 3;
if (Object.defineProperty) {
Object.defineProperty(b, 'length', {
enumerable: false
});
}
t.deepEqualTest(b, ['a', 'b', 'c'], 'regex faking as array, and array', false, false);
t.end();
});
test('circular references', { skip: 'not supported until v2' }, function (t) {
var b = {};
b.b = b;
var c = {};
c.b = c;
t.deepEqualTest(
b,
c,
'two self-referencing objects',
true,
true
);
var d = {};
d.a = 1;
d.b = d;
var e = {};
e.a = 1;
e.b = e.a;
t.deepEqualTest(
d,
e,
'two deeply self-referencing objects',
false,
false
);
t.end();
});
// io.js v2 is the only version where `console.log(b)` below is catchable
var isNodeWhereBufferBreaks = isNode && semver.satisfies(process.version, '< 3');
var isNode06 = isNode && semver.satisfies(process.version, '<= 0.6'); // segfaults in node 0.6, it seems
test('TypedArrays', { skip: !hasTypedArrays }, function (t) {
t.test('Buffer faked as Uint8Array', { skip: typeof Buffer !== 'function' || !Object.create || !hasProto || isNode06 }, function (st) {
var a = safeBuffer('test');
var b = tag(Object.create(
a.__proto__, // eslint-disable-line no-proto
assign(gOPDs(a), {
length: {
enumerable: false,
value: 4
}
})
), 'Uint8Array');
st.deepEqualTest(
a,
b,
'Buffer and Uint8Array',
true || isNodeWhereBufferBreaks,
true || isNodeWhereBufferBreaks
);
st.end();
});
forEach(availableTypedArrays, function (name) {
t.test(name + 's', function (st) {
var TA = global[name];
var isBigInt = name.slice(0, 3) === 'Big';
var Z = isBigInt ? BigInt : Number;
st.deepEqualTest(
new TA([Z(1), Z(2), Z(3)]),
new TA([Z(1), Z(2), Z(3)]),
'two ' + name + 's with the same contents',
true,
true
);
st.deepEqualTest(
new TA([Z(1), Z(2), Z(3)]),
new TA([Z(1), Z(2), Z(4)]),
'two ' + name + 's with different contents',
false,
false
);
st.end();
});
});
t.test('one TypedArray faking as another', { skip: !hasProto }, function (st) {
var a = new Uint8Array(10);
var b = tag(new Int8Array(10), 'Uint8Array');
b.__proto__ = Uint8Array.prototype; // eslint-disable-line no-proto
defineDataProperty(b, 'length', 10);
st.deepEqualTest(
a,
b,
'Uint8Array, and Int8Array pretending to be a Uint8Array',
false,
false
);
st.end();
});
t.test('ArrayBuffers', { skip: typeof ArrayBuffer !== 'function' }, function (st) {
var buffer1 = new ArrayBuffer(8); // initial value of 0's
var buffer2 = new ArrayBuffer(8); // initial value of 0's
var view1 = new Int8Array(buffer1);
var view2 = new Int8Array(buffer2);
st.deepEqualTest(
view1,
view2,
'Int8Arrays of similar ArrayBuffers',
true,
true
);
st.deepEqualTest(
buffer1,
buffer2,
'similar ArrayBuffers',
true,
true
);
for (var i = 0; i < view1.byteLength; i += 1) {
view1[i] = 9; // change all values to 9's
}
st.deepEqualTest(
view1,
view2,
'Int8Arrays of different ArrayBuffers',
false,
false
);
var isHigherThanNode010 = isNode && semver.satisfies(process.version, '> 0.10');
st.deepEqualTest(
buffer1,
buffer2,
'different ArrayBuffers',
isHigherThanNode010,
isHigherThanNode010
);
// node < 0.11 has a nonconfigurable own byteLength property
t.test('lies about byteLength', { skip: !('byteLength' in ArrayBuffer.prototype) }, function (s2t) {
var empty4 = new ArrayBuffer(4);
var empty6 = new ArrayBuffer(6);
Object.defineProperty(empty6, 'byteLength', { value: 4 });
s2t.deepEqualTest(
empty4,
empty6,
'different-length ArrayBuffers, one lying',
true,
true
);
s2t.end();
});
st.end();
});
t.test('SharedArrayBuffers', { skip: typeof SharedArrayBuffer !== 'function' }, function (st) {
var buffer1 = new SharedArrayBuffer(8); // initial value of 0's
var buffer2 = new SharedArrayBuffer(8); // initial value of 0's
var view1 = new Int8Array(buffer1);
var view2 = new Int8Array(buffer2);
st.deepEqualTest(
view1,
view2,
'Int8Arrays of similar SharedArrayBuffers',
true,
true
);
st.deepEqualTest(
buffer1,
buffer2,
'similar SharedArrayBuffers',
true,
true
);
for (var i = 0; i < view1.byteLength; i += 1) {
view1[i] = 9; // change all values to 9's
}
st.deepEqualTest(
view1,
view2,
'Int8Arrays of different SharedArrayBuffers',
false,
false
);
st.deepEqualTest(
buffer1,
buffer2,
'different SharedArrayBuffers',
true,
true
);
t.test('lies about byteLength', { skip: !('byteLength' in SharedArrayBuffer.prototype) }, function (s2t) {
var empty4 = new SharedArrayBuffer(4);
var empty6 = new SharedArrayBuffer(6);
Object.defineProperty(empty6, 'byteLength', { value: 4 });
s2t.deepEqualTest(
empty4,
empty6,
'different-length SharedArrayBuffers, one lying',
true,
true
);
s2t.end();
});
st.end();
});
t.end();
});