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tests.js
/* eslint-disable node/no-deprecated-api */ 'use strict' var test = require('tape') var buffer = require('buffer') var index = require('./') var safer = require('./safer') var dangerous = require('./dangerous') /* Inheritance tests */ test('Default is Safer', function (t) { t.equal(index, safer) t.notEqual(safer, dangerous) t.notEqual(index, dangerous) t.end() }) test('Is not a function', function (t) { [index, safer, dangerous].forEach(function (impl) { t.equal(typeof impl, 'object') t.equal(typeof impl.Buffer, 'object') }); [buffer].forEach(function (impl) { t.equal(typeof impl, 'object') t.equal(typeof impl.Buffer, 'function') }) t.end() }) test('Constructor throws', function (t) { [index, safer, dangerous].forEach(function (impl) { t.throws(function () { impl.Buffer() }) t.throws(function () { impl.Buffer(0) }) t.throws(function () { impl.Buffer('a') }) t.throws(function () { impl.Buffer('a', 'utf-8') }) t.throws(function () { return new impl.Buffer() }) t.throws(function () { return new impl.Buffer(0) }) t.throws(function () { return new impl.Buffer('a') }) t.throws(function () { return new impl.Buffer('a', 'utf-8') }) }) t.end() }) test('Safe methods exist', function (t) { [index, safer, dangerous].forEach(function (impl) { t.equal(typeof impl.Buffer.alloc, 'function', 'alloc') t.equal(typeof impl.Buffer.from, 'function', 'from') }) t.end() }) test('Unsafe methods exist only in Dangerous', function (t) { [index, safer].forEach(function (impl) { t.equal(typeof impl.Buffer.allocUnsafe, 'undefined') t.equal(typeof impl.Buffer.allocUnsafeSlow, 'undefined') }); [dangerous].forEach(function (impl) { t.equal(typeof impl.Buffer.allocUnsafe, 'function') t.equal(typeof impl.Buffer.allocUnsafeSlow, 'function') }) t.end() }) test('Generic methods/properties are defined and equal', function (t) { ['poolSize', 'isBuffer', 'concat', 'byteLength'].forEach(function (method) { [index, safer, dangerous].forEach(function (impl) { t.equal(impl.Buffer[method], buffer.Buffer[method], method) t.notEqual(typeof impl.Buffer[method], 'undefined', method) }) }) t.end() }) test('Built-in buffer static methods/properties are inherited', function (t) { Object.keys(buffer).forEach(function (method) { if (method === 'SlowBuffer' || method === 'Buffer') return; [index, safer, dangerous].forEach(function (impl) { t.equal(impl[method], buffer[method], method) t.notEqual(typeof impl[method], 'undefined', method) }) }) t.end() }) test('Built-in Buffer static methods/properties are inherited', function (t) { Object.keys(buffer.Buffer).forEach(function (method) { if (method === 'allocUnsafe' || method === 'allocUnsafeSlow') return; [index, safer, dangerous].forEach(function (impl) { t.equal(impl.Buffer[method], buffer.Buffer[method], method) t.notEqual(typeof impl.Buffer[method], 'undefined', method) }) }) t.end() }) test('.prototype property of Buffer is inherited', function (t) { [index, safer, dangerous].forEach(function (impl) { t.equal(impl.Buffer.prototype, buffer.Buffer.prototype, 'prototype') t.notEqual(typeof impl.Buffer.prototype, 'undefined', 'prototype') }) t.end() }) test('All Safer methods are present in Dangerous', function (t) { Object.keys(safer).forEach(function (method) { if (method === 'Buffer') return; [index, safer, dangerous].forEach(function (impl) { t.equal(impl[method], safer[method], method) if (method !== 'kStringMaxLength') { t.notEqual(typeof impl[method], 'undefined', method) } }) }) Object.keys(safer.Buffer).forEach(function (method) { [index, safer, dangerous].forEach(function (impl) { t.equal(impl.Buffer[method], safer.Buffer[method], method) t.notEqual(typeof impl.Buffer[method], 'undefined', method) }) }) t.end() }) test('Safe methods from Dangerous methods are present in Safer', function (t) { Object.keys(dangerous).forEach(function (method) { if (method === 'Buffer') return; [index, safer, dangerous].forEach(function (impl) { t.equal(impl[method], dangerous[method], method) if (method !== 'kStringMaxLength') { t.notEqual(typeof impl[method], 'undefined', method) } }) }) Object.keys(dangerous.Buffer).forEach(function (method) { if (method === 'allocUnsafe' || method === 'allocUnsafeSlow') return; [index, safer, dangerous].forEach(function (impl) { t.equal(impl.Buffer[method], dangerous.Buffer[method], method) t.notEqual(typeof impl.Buffer[method], 'undefined', method) }) }) t.end() }) /* Behaviour tests */ test('Methods return Buffers', function (t) { [index, safer, dangerous].forEach(function (impl) { t.ok(buffer.Buffer.isBuffer(impl.Buffer.alloc(0))) t.ok(buffer.Buffer.isBuffer(impl.Buffer.alloc(0, 10))) t.ok(buffer.Buffer.isBuffer(impl.Buffer.alloc(0, 'a'))) t.ok(buffer.Buffer.isBuffer(impl.Buffer.alloc(10))) t.ok(buffer.Buffer.isBuffer(impl.Buffer.alloc(10, 'x'))) t.ok(buffer.Buffer.isBuffer(impl.Buffer.alloc(9, 'ab'))) t.ok(buffer.Buffer.isBuffer(impl.Buffer.from(''))) t.ok(buffer.Buffer.isBuffer(impl.Buffer.from('string'))) t.ok(buffer.Buffer.isBuffer(impl.Buffer.from('string', 'utf-8'))) t.ok(buffer.Buffer.isBuffer(impl.Buffer.from('b25ldHdvdGhyZWU=', 'base64'))) t.ok(buffer.Buffer.isBuffer(impl.Buffer.from([0, 42, 3]))) t.ok(buffer.Buffer.isBuffer(impl.Buffer.from(new Uint8Array([0, 42, 3])))) t.ok(buffer.Buffer.isBuffer(impl.Buffer.from([]))) }); ['allocUnsafe', 'allocUnsafeSlow'].forEach(function (method) { t.ok(buffer.Buffer.isBuffer(dangerous.Buffer[method](0))) t.ok(buffer.Buffer.isBuffer(dangerous.Buffer[method](10))) }) t.end() }) test('Constructor is buffer.Buffer', function (t) { [index, safer, dangerous].forEach(function (impl) { t.equal(impl.Buffer.alloc(0).constructor, buffer.Buffer) t.equal(impl.Buffer.alloc(0, 10).constructor, buffer.Buffer) t.equal(impl.Buffer.alloc(0, 'a').constructor, buffer.Buffer) t.equal(impl.Buffer.alloc(10).constructor, buffer.Buffer) t.equal(impl.Buffer.alloc(10, 'x').constructor, buffer.Buffer) t.equal(impl.Buffer.alloc(9, 'ab').constructor, buffer.Buffer) t.equal(impl.Buffer.from('').constructor, buffer.Buffer) t.equal(impl.Buffer.from('string').constructor, buffer.Buffer) t.equal(impl.Buffer.from('string', 'utf-8').constructor, buffer.Buffer) t.equal(impl.Buffer.from('b25ldHdvdGhyZWU=', 'base64').constructor, buffer.Buffer) t.equal(impl.Buffer.from([0, 42, 3]).constructor, buffer.Buffer) t.equal(impl.Buffer.from(new Uint8Array([0, 42, 3])).constructor, buffer.Buffer) t.equal(impl.Buffer.from([]).constructor, buffer.Buffer) }); [0, 10, 100].forEach(function (arg) { t.equal(dangerous.Buffer.allocUnsafe(arg).constructor, buffer.Buffer) t.equal(dangerous.Buffer.allocUnsafeSlow(arg).constructor, buffer.SlowBuffer(0).constructor) }) t.end() }) test('Invalid calls throw', function (t) { [index, safer, dangerous].forEach(function (impl) { t.throws(function () { impl.Buffer.from(0) }) t.throws(function () { impl.Buffer.from(10) }) t.throws(function () { impl.Buffer.from(10, 'utf-8') }) t.throws(function () { impl.Buffer.from('string', 'invalid encoding') }) t.throws(function () { impl.Buffer.from(-10) }) t.throws(function () { impl.Buffer.from(1e90) }) t.throws(function () { impl.Buffer.from(Infinity) }) t.throws(function () { impl.Buffer.from(-Infinity) }) t.throws(function () { impl.Buffer.from(NaN) }) t.throws(function () { impl.Buffer.from(null) }) t.throws(function () { impl.Buffer.from(undefined) }) t.throws(function () { impl.Buffer.from() }) t.throws(function () { impl.Buffer.from({}) }) t.throws(function () { impl.Buffer.alloc('') }) t.throws(function () { impl.Buffer.alloc('string') }) t.throws(function () { impl.Buffer.alloc('string', 'utf-8') }) t.throws(function () { impl.Buffer.alloc('b25ldHdvdGhyZWU=', 'base64') }) t.throws(function () { impl.Buffer.alloc(-10) }) t.throws(function () { impl.Buffer.alloc(1e90) }) //t.throws(function () { impl.Buffer.alloc(2 * (1 << 30)) }) t.throws(function () { impl.Buffer.alloc(Infinity) }) t.throws(function () { impl.Buffer.alloc(-Infinity) }) t.throws(function () { impl.Buffer.alloc(null) }) t.throws(function () { impl.Buffer.alloc(undefined) }) t.throws(function () { impl.Buffer.alloc() }) t.throws(function () { impl.Buffer.alloc([]) }) t.throws(function () { impl.Buffer.alloc([0, 42, 3]) }) t.throws(function () { impl.Buffer.alloc({}) }) }); ['allocUnsafe', 'allocUnsafeSlow'].forEach(function (method) { t.throws(function () { dangerous.Buffer[method]('') }) t.throws(function () { dangerous.Buffer[method]('string') }) t.throws(function () { dangerous.Buffer[method]('string', 'utf-8') }) //t.throws(function () { dangerous.Buffer[method](2 * (1 << 30)) }) t.throws(function () { dangerous.Buffer[method](Infinity) }) if (dangerous.Buffer[method] === buffer.Buffer.allocUnsafe) { t.skip('Skipping, older impl of allocUnsafe coerced negative sizes to 0') } else { t.throws(function () { dangerous.Buffer[method](-10) }) t.throws(function () { dangerous.Buffer[method](-1e90) }) t.throws(function () { dangerous.Buffer[method](-Infinity) }) } t.throws(function () { dangerous.Buffer[method](null) }) t.throws(function () { dangerous.Buffer[method](undefined) }) t.throws(function () { dangerous.Buffer[method]() }) t.throws(function () { dangerous.Buffer[method]([]) }) t.throws(function () { dangerous.Buffer[method]([0, 42, 3]) }) t.throws(function () { dangerous.Buffer[method]({}) }) }) t.end() }) test('Buffers have appropriate lengths', function (t) { [index, safer, dangerous].forEach(function (impl) { t.equal(impl.Buffer.alloc(0).length, 0) t.equal(impl.Buffer.alloc(10).length, 10) t.equal(impl.Buffer.from('').length, 0) t.equal(impl.Buffer.from('string').length, 6) t.equal(impl.Buffer.from('string', 'utf-8').length, 6) t.equal(impl.Buffer.from('b25ldHdvdGhyZWU=', 'base64').length, 11) t.equal(impl.Buffer.from([0, 42, 3]).length, 3) t.equal(impl.Buffer.from(new Uint8Array([0, 42, 3])).length, 3) t.equal(impl.Buffer.from([]).length, 0) }); ['allocUnsafe', 'allocUnsafeSlow'].forEach(function (method) { t.equal(dangerous.Buffer[method](0).length, 0) t.equal(dangerous.Buffer[method](10).length, 10) }) t.end() }) test('Buffers have appropriate lengths (2)', function (t) { t.equal(index.Buffer.alloc, safer.Buffer.alloc) t.equal(index.Buffer.alloc, dangerous.Buffer.alloc) var ok = true; [ safer.Buffer.alloc, dangerous.Buffer.allocUnsafe, dangerous.Buffer.allocUnsafeSlow ].forEach(function (method) { for (var i = 0; i < 1e2; i++) { var length = Math.round(Math.random() * 1e5) var buf = method(length) if (!buffer.Buffer.isBuffer(buf)) ok = false if (buf.length !== length) ok = false } }) t.ok(ok) t.end() }) test('.alloc(size) is zero-filled and has correct length', function (t) { t.equal(index.Buffer.alloc, safer.Buffer.alloc) t.equal(index.Buffer.alloc, dangerous.Buffer.alloc) var ok = true for (var i = 0; i < 1e2; i++) { var length = Math.round(Math.random() * 2e6) var buf = index.Buffer.alloc(length) if (!buffer.Buffer.isBuffer(buf)) ok = false if (buf.length !== length) ok = false var j for (j = 0; j < length; j++) { if (buf[j] !== 0) ok = false } buf.fill(1) for (j = 0; j < length; j++) { if (buf[j] !== 1) ok = false } } t.ok(ok) t.end() }) test('.allocUnsafe / .allocUnsafeSlow are fillable and have correct lengths', function (t) { ['allocUnsafe', 'allocUnsafeSlow'].forEach(function (method) { var ok = true for (var i = 0; i < 1e2; i++) { var length = Math.round(Math.random() * 2e6) var buf = dangerous.Buffer[method](length) if (!buffer.Buffer.isBuffer(buf)) ok = false if (buf.length !== length) ok = false buf.fill(0, 0, length) var j for (j = 0; j < length; j++) { if (buf[j] !== 0) ok = false } buf.fill(1, 0, length) for (j = 0; j < length; j++) { if (buf[j] !== 1) ok = false } } t.ok(ok, method) }) t.end() }) test('.alloc(size, fill) is `fill`-filled', function (t) { t.equal(index.Buffer.alloc, safer.Buffer.alloc) t.equal(index.Buffer.alloc, dangerous.Buffer.alloc) var ok = true for (var i = 0; i < 1e2; i++) { var length = Math.round(Math.random() * 2e6) var fill = Math.round(Math.random() * 255) var buf = index.Buffer.alloc(length, fill) if (!buffer.Buffer.isBuffer(buf)) ok = false if (buf.length !== length) ok = false for (var j = 0; j < length; j++) { if (buf[j] !== fill) ok = false } } t.ok(ok) t.end() }) test('.alloc(size, fill) is `fill`-filled', function (t) { t.equal(index.Buffer.alloc, safer.Buffer.alloc) t.equal(index.Buffer.alloc, dangerous.Buffer.alloc) var ok = true for (var i = 0; i < 1e2; i++) { var length = Math.round(Math.random() * 2e6) var fill = Math.round(Math.random() * 255) var buf = index.Buffer.alloc(length, fill) if (!buffer.Buffer.isBuffer(buf)) ok = false if (buf.length !== length) ok = false for (var j = 0; j < length; j++) { if (buf[j] !== fill) ok = false } } t.ok(ok) t.deepEqual(index.Buffer.alloc(9, 'a'), index.Buffer.alloc(9, 97)) t.notDeepEqual(index.Buffer.alloc(9, 'a'), index.Buffer.alloc(9, 98)) var tmp = new buffer.Buffer(2) tmp.fill('ok') if (tmp[1] === tmp[0]) { // Outdated Node.js t.deepEqual(index.Buffer.alloc(5, 'ok'), index.Buffer.from('ooooo')) } else { t.deepEqual(index.Buffer.alloc(5, 'ok'), index.Buffer.from('okoko')) } t.notDeepEqual(index.Buffer.alloc(5, 'ok'), index.Buffer.from('kokok')) t.end() }) test('safer.Buffer.from returns results same as Buffer constructor', function (t) { [index, safer, dangerous].forEach(function (impl) { t.deepEqual(impl.Buffer.from(''), new buffer.Buffer('')) t.deepEqual(impl.Buffer.from('string'), new buffer.Buffer('string')) t.deepEqual(impl.Buffer.from('string', 'utf-8'), new buffer.Buffer('string', 'utf-8')) t.deepEqual(impl.Buffer.from('b25ldHdvdGhyZWU=', 'base64'), new buffer.Buffer('b25ldHdvdGhyZWU=', 'base64')) t.deepEqual(impl.Buffer.from([0, 42, 3]), new buffer.Buffer([0, 42, 3])) t.deepEqual(impl.Buffer.from(new Uint8Array([0, 42, 3])), new buffer.Buffer(new Uint8Array([0, 42, 3]))) t.deepEqual(impl.Buffer.from([]), new buffer.Buffer([])) }) t.end() }) test('safer.Buffer.from returns consistent results', function (t) { [index, safer, dangerous].forEach(function (impl) { t.deepEqual(impl.Buffer.from(''), impl.Buffer.alloc(0)) t.deepEqual(impl.Buffer.from([]), impl.Buffer.alloc(0)) t.deepEqual(impl.Buffer.from(new Uint8Array([])), impl.Buffer.alloc(0)) t.deepEqual(impl.Buffer.from('string', 'utf-8'), impl.Buffer.from('string')) t.deepEqual(impl.Buffer.from('string'), impl.Buffer.from([115, 116, 114, 105, 110, 103])) t.deepEqual(impl.Buffer.from('string'), impl.Buffer.from(impl.Buffer.from('string'))) t.deepEqual(impl.Buffer.from('b25ldHdvdGhyZWU=', 'base64'), impl.Buffer.from('onetwothree')) t.notDeepEqual(impl.Buffer.from('b25ldHdvdGhyZWU='), impl.Buffer.from('onetwothree')) }) t.end() })