mirror of
https://github.com/denoland/deno.git
synced 2024-12-26 09:10:40 -05:00
661 lines
16 KiB
TypeScript
661 lines
16 KiB
TypeScript
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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import { assert, assertEquals, assertThrows } from "../testing/asserts.ts";
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import Buffer from "./buffer.ts";
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Deno.test({
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name: "Buffer global scope",
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fn() {
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// deno-lint-ignore ban-ts-comment
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// @ts-expect-error
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assert(window.Buffer === Buffer);
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// deno-lint-ignore ban-ts-comment
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// @ts-expect-error
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assert(globalThis.Buffer === Buffer);
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},
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});
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Deno.test({
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name: "alloc fails on negative numbers",
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fn() {
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assertThrows(
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() => {
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Buffer.alloc(-1);
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},
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RangeError,
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"Invalid typed array length: -1",
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"should throw on negative numbers",
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);
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},
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});
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Deno.test({
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name: "alloc fails if size is not a number",
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fn() {
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const invalidSizes = [{}, "1", "foo", []];
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for (const size of invalidSizes) {
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assertThrows(
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() => {
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// deno-lint-ignore ban-ts-comment
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// @ts-expect-error
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Buffer.alloc(size);
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},
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TypeError,
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`The "size" argument must be of type number. Received type ${typeof size}`,
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"should throw on non-number size",
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);
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}
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},
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});
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Deno.test({
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name: "alloc(>0) fails if value is an empty Buffer/Uint8Array",
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fn() {
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const invalidValues = [new Uint8Array(), Buffer.alloc(0)];
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for (const value of invalidValues) {
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assertThrows(
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() => {
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console.log(value.constructor.name);
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Buffer.alloc(1, value);
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},
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TypeError,
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`The argument "value" is invalid. Received ${value.constructor.name} []`,
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"should throw for empty Buffer/Uint8Array",
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);
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}
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},
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});
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Deno.test({
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name: "alloc(0) doesn't fail if value is an empty Buffer/Uint8Array",
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fn() {
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const invalidValues = [new Uint8Array(), Buffer.alloc(0)];
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for (const value of invalidValues) {
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assertEquals(Buffer.alloc(0, value).length, 0);
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}
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},
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});
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Deno.test({
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name: "alloc allocates a buffer with the expected size",
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fn() {
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const buffer: Buffer = Buffer.alloc(1);
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assertEquals(buffer.length, 1, "Buffer size should be 1");
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assertEquals(buffer[0], 0, "Content should be filled with 0");
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},
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});
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Deno.test({
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name: "alloc(0) creates an empty buffer",
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fn() {
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const buffer: Buffer = Buffer.alloc(0);
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assertEquals(buffer.length, 0, "Buffer size should be 0");
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},
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});
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Deno.test({
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name: "allocUnsafe allocates a buffer with the expected size",
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fn() {
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const buffer: Buffer = Buffer.allocUnsafe(1);
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assertEquals(buffer.length, 1, "Buffer size should be 1");
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},
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});
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Deno.test({
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name: "allocUnsafe(0) creates an empty buffer",
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fn() {
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const buffer: Buffer = Buffer.allocUnsafe(0);
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assertEquals(buffer.length, 0, "Buffer size should be 0");
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},
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});
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Deno.test({
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name: "alloc filled correctly with integer",
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fn() {
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const buffer: Buffer = Buffer.alloc(3, 5);
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assertEquals(buffer, new Uint8Array([5, 5, 5]));
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},
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});
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Deno.test({
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name: "alloc filled correctly with single character",
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fn() {
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assertEquals(Buffer.alloc(5, "a"), new Uint8Array([97, 97, 97, 97, 97]));
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},
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});
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Deno.test({
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name: "alloc filled correctly with base64 string",
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fn() {
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assertEquals(
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Buffer.alloc(11, "aGVsbG8gd29ybGQ=", "base64"),
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new Uint8Array([104, 101, 108, 108, 111, 32, 119, 111, 114, 108, 100]),
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);
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},
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});
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Deno.test({
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name: "alloc filled correctly with hex string",
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fn() {
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assertEquals(
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Buffer.alloc(4, "64656e6f", "hex"),
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new Uint8Array([100, 101, 110, 111]),
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);
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},
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});
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Deno.test({
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name: "alloc filled correctly with hex string smaller than alloc size",
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fn() {
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assertEquals(
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Buffer.alloc(13, "64656e6f", "hex").toString(),
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"denodenodenod",
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);
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},
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});
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Deno.test({
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name: "alloc filled correctly with Uint8Array smaller than alloc size",
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fn() {
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assertEquals(
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Buffer.alloc(7, new Uint8Array([100, 101])),
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new Uint8Array([100, 101, 100, 101, 100, 101, 100]),
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);
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assertEquals(
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Buffer.alloc(6, new Uint8Array([100, 101])),
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new Uint8Array([100, 101, 100, 101, 100, 101]),
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);
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},
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});
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Deno.test({
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name: "alloc filled correctly with Uint8Array bigger than alloc size",
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fn() {
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assertEquals(
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Buffer.alloc(1, new Uint8Array([100, 101])),
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new Uint8Array([100]),
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);
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},
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});
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Deno.test({
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name: "alloc filled correctly with Buffer",
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fn() {
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assertEquals(
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Buffer.alloc(6, new Buffer([100, 101])),
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new Uint8Array([100, 101, 100, 101, 100, 101]),
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);
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assertEquals(
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Buffer.alloc(7, new Buffer([100, 101])),
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new Uint8Array([100, 101, 100, 101, 100, 101, 100]),
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);
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},
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});
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// tests from:
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// https://github.com/nodejs/node/blob/56dbe466fdbc598baea3bfce289bf52b97b8b8f7/test/parallel/test-buffer-bytelength.js#L70
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Deno.test({
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name: "Byte length is the expected for strings",
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fn() {
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// Special case: zero length string
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assertEquals(Buffer.byteLength("", "ascii"), 0);
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assertEquals(Buffer.byteLength("", "HeX"), 0);
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// utf8
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assertEquals(Buffer.byteLength("∑éllö wørl∂!", "utf-8"), 19);
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assertEquals(Buffer.byteLength("κλμνξο", "utf8"), 12);
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assertEquals(Buffer.byteLength("挵挶挷挸挹", "utf-8"), 15);
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assertEquals(Buffer.byteLength("𠝹𠱓𠱸", "UTF8"), 12);
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// Without an encoding, utf8 should be assumed
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assertEquals(Buffer.byteLength("hey there"), 9);
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assertEquals(Buffer.byteLength("𠱸挶νξ#xx :)"), 17);
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assertEquals(Buffer.byteLength("hello world", ""), 11);
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// It should also be assumed with unrecognized encoding
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assertEquals(Buffer.byteLength("hello world", "abc"), 11);
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assertEquals(Buffer.byteLength("ßœ∑≈", "unkn0wn enc0ding"), 10);
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// base64
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assertEquals(Buffer.byteLength("aGVsbG8gd29ybGQ=", "base64"), 11);
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assertEquals(Buffer.byteLength("aGVsbG8gd29ybGQ=", "BASE64"), 11);
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assertEquals(Buffer.byteLength("bm9kZS5qcyByb2NrcyE=", "base64"), 14);
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assertEquals(Buffer.byteLength("aGkk", "base64"), 3);
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assertEquals(
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Buffer.byteLength("bHNrZGZsa3NqZmtsc2xrZmFqc2RsZmtqcw==", "base64"),
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25,
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);
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// special padding
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assertEquals(Buffer.byteLength("aaa=", "base64"), 2);
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assertEquals(Buffer.byteLength("aaaa==", "base64"), 3);
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assertEquals(Buffer.byteLength("Il était tué"), 14);
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assertEquals(Buffer.byteLength("Il était tué", "utf8"), 14);
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["ascii", "latin1", "binary"]
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.reduce((es: string[], e: string) => es.concat(e, e.toUpperCase()), [])
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.forEach((encoding: string) => {
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assertEquals(Buffer.byteLength("Il était tué", encoding), 12);
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});
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["ucs2", "ucs-2", "utf16le", "utf-16le"]
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.reduce((es: string[], e: string) => es.concat(e, e.toUpperCase()), [])
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.forEach((encoding: string) => {
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assertEquals(Buffer.byteLength("Il était tué", encoding), 24);
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});
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},
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});
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Deno.test({
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name: "Byte length is the expected one for non-strings",
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fn() {
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assertEquals(
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Buffer.byteLength(Buffer.alloc(0)),
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Buffer.alloc(0).byteLength,
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"Byte lenght differs on buffers",
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);
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},
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});
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Deno.test({
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name: "Two Buffers are concatenated",
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fn() {
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const data1 = [1, 2, 3];
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const data2 = [4, 5, 6];
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const buffer1 = Buffer.from(data1);
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const buffer2 = Buffer.from(data2);
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const resultBuffer = Buffer.concat([buffer1, buffer2]);
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const expectedBuffer = Buffer.from([...data1, ...data2]);
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assertEquals(resultBuffer, expectedBuffer);
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},
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});
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Deno.test({
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name: "A single buffer concatenates and return the same buffer",
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fn() {
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const buffer1 = Buffer.alloc(1);
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const resultBuffer = Buffer.concat([buffer1]);
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assertEquals(resultBuffer.length, 1, "Buffer length should be 1");
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},
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});
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Deno.test({
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name: "No buffers concat returns an empty buffer",
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fn() {
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const resultBuffer = Buffer.concat([]);
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assertEquals(resultBuffer.length, 0, "Buffer length should be 0");
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},
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});
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Deno.test({
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name: "Buffer concat respects totalLenght parameter",
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fn() {
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const maxLength1 = 10;
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const buffer1 = Buffer.alloc(2);
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const buffer2 = Buffer.alloc(2);
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assertEquals(
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Buffer.concat([buffer1, buffer2], maxLength1).length,
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maxLength1,
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);
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const maxLength2 = 3;
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const buffer3 = Buffer.alloc(2);
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const buffer4 = Buffer.alloc(2);
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assertEquals(
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Buffer.concat([buffer3, buffer4], maxLength2).length,
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maxLength2,
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);
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},
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});
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Deno.test({
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name: "Buffer copy works as expected",
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fn() {
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const data1 = new Uint8Array([1, 2, 3]);
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const data2 = new Uint8Array([4, 5, 6]);
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const buffer1 = Buffer.from(data1);
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const buffer2 = Buffer.from(data2);
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//Mutates data_1
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data1.set(data2);
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//Mutates buffer_1
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buffer2.copy(buffer1);
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assertEquals(
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data1,
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buffer1,
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);
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},
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});
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Deno.test({
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name: "Buffer copy respects the starting point for copy",
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fn() {
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const buffer1 = Buffer.from([1, 2, 3]);
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const buffer2 = Buffer.alloc(8);
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buffer1.copy(buffer2, 5);
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const expected = Buffer.from([0, 0, 0, 0, 0, 1, 2, 3]);
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assertEquals(
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buffer2,
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expected,
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);
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},
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});
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Deno.test({
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name: "Buffer copy doesn't throw on offset but copies until offset reached",
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fn() {
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const buffer1 = Buffer.from([1, 2, 3]);
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const buffer2 = Buffer.alloc(8);
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const writtenBytes1 = buffer1.copy(buffer2, 6);
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assertEquals(
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writtenBytes1,
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2,
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);
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assertEquals(
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buffer2,
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Buffer.from([0, 0, 0, 0, 0, 0, 1, 2]),
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);
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const buffer3 = Buffer.from([1, 2, 3]);
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const buffer4 = Buffer.alloc(8);
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const writtenBytes2 = buffer3.copy(buffer4, 8);
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assertEquals(
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writtenBytes2,
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0,
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);
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assertEquals(
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buffer4,
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Buffer.from([0, 0, 0, 0, 0, 0, 0, 0]),
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);
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},
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});
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Deno.test({
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name: "Buffer from string creates a Buffer",
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fn() {
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const buffer: Buffer = Buffer.from("test");
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assertEquals(buffer.length, 4, "Buffer length should be 4");
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assertEquals(
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buffer.toString(),
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"test",
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"Buffer to string should recover the string",
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);
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},
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});
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Deno.test({
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name: "Buffer from string hex",
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fn() {
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for (const encoding of ["hex", "HEX"]) {
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const buffer: Buffer = Buffer.from(
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"7468697320697320612074c3a97374",
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encoding,
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);
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assertEquals(buffer.length, 15, "Buffer length should be 15");
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assertEquals(
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buffer.toString(),
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"this is a tést",
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"Buffer to string should recover the string",
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);
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}
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},
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});
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Deno.test({
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name: "Buffer from string base64",
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fn() {
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for (const encoding of ["base64", "BASE64"]) {
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const buffer: Buffer = Buffer.from("dGhpcyBpcyBhIHTDqXN0", encoding);
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assertEquals(buffer.length, 15, "Buffer length should be 15");
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assertEquals(
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buffer.toString(),
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"this is a tést",
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"Buffer to string should recover the string",
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);
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}
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},
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});
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Deno.test({
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name: "Buffer to string base64",
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fn() {
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for (const encoding of ["base64", "BASE64"]) {
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const buffer: Buffer = Buffer.from("deno land");
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assertEquals(
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buffer.toString(encoding),
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"ZGVubyBsYW5k",
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"Buffer to string should recover the string in base64",
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);
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}
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const b64 = "dGhpcyBpcyBhIHTDqXN0";
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assertEquals(Buffer.from(b64, "base64").toString("base64"), b64);
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},
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});
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Deno.test({
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name: "Buffer to string hex",
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fn() {
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for (const encoding of ["hex", "HEX"]) {
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const buffer: Buffer = Buffer.from("deno land");
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assertEquals(
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buffer.toString(encoding),
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"64656e6f206c616e64",
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"Buffer to string should recover the string",
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);
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}
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const hex = "64656e6f206c616e64";
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assertEquals(Buffer.from(hex, "hex").toString("hex"), hex);
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},
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});
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Deno.test({
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name: "Buffer to string invalid encoding",
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fn() {
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const buffer: Buffer = Buffer.from("deno land");
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const invalidEncodings = [null, 5, {}, true, false, "foo", ""];
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for (const encoding of invalidEncodings) {
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assertThrows(
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() => {
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// deno-lint-ignore ban-ts-comment
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// @ts-expect-error
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buffer.toString(encoding);
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},
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TypeError,
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`Unkown encoding: ${encoding}`,
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"Should throw on invalid encoding",
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);
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}
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},
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});
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Deno.test({
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name: "Buffer from string invalid encoding",
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fn() {
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const defaultToUtf8Encodings = [null, 5, {}, true, false, ""];
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const invalidEncodings = ["deno", "base645"];
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for (const encoding of defaultToUtf8Encodings) {
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// deno-lint-ignore ban-ts-comment
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// @ts-expect-error
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assertEquals(Buffer.from("yes", encoding).toString(), "yes");
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}
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for (const encoding of invalidEncodings) {
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assertThrows(
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() => {
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Buffer.from("yes", encoding);
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},
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TypeError,
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`Unkown encoding: ${encoding}`,
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);
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}
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},
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});
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Deno.test({
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name: "Buffer to/from string not implemented encodings",
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fn() {
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const buffer: Buffer = Buffer.from("deno land");
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const notImplemented = ["ascii", "binary"];
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for (const encoding of notImplemented) {
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assertThrows(
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() => {
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buffer.toString(encoding);
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},
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Error,
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`"${encoding}" encoding`,
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"Should throw on invalid encoding",
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);
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assertThrows(
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() => {
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Buffer.from("", encoding);
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},
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Error,
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`"${encoding}" encoding`,
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"Should throw on invalid encoding",
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);
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}
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},
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});
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Deno.test({
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name: "Buffer from another buffer creates a Buffer",
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fn() {
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const buffer: Buffer = Buffer.from(Buffer.from("test"));
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assertEquals(buffer.length, 4, "Buffer length should be 4");
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assertEquals(
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buffer.toString(),
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"test",
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"Buffer to string should recover the string",
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);
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},
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});
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Deno.test({
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name: "isBuffer returns true if the object is a buffer",
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fn() {
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assertEquals(Buffer.isBuffer(Buffer.from("test")), true);
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},
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});
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Deno.test({
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name: "isBuffer returns false if the object is not a buffer",
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fn() {
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assertEquals(Buffer.isBuffer({ test: 3 }), false);
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assertEquals(Buffer.isBuffer(new Uint8Array()), false);
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},
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});
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Deno.test({
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name: "Buffer toJSON",
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fn() {
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assertEquals(
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|
JSON.stringify(Buffer.from("deno")),
|
|
'{"type":"Buffer","data":[100,101,110,111]}',
|
|
);
|
|
},
|
|
});
|
|
|
|
Deno.test({
|
|
name: "buf.slice does not create a copy",
|
|
fn() {
|
|
const buf = Buffer.from("ceno");
|
|
// This method is not compatible with the Uint8Array.prototype.slice()
|
|
const slice = buf.slice();
|
|
slice[0]++;
|
|
assertEquals(slice.toString(), "deno");
|
|
},
|
|
});
|
|
|
|
Deno.test({
|
|
name: "isEncoding returns true for valid encodings",
|
|
fn() {
|
|
[
|
|
"hex",
|
|
"HEX",
|
|
"HeX",
|
|
"utf8",
|
|
"utf-8",
|
|
"ascii",
|
|
"latin1",
|
|
"binary",
|
|
"base64",
|
|
"BASE64",
|
|
"BASe64",
|
|
"ucs2",
|
|
"ucs-2",
|
|
"utf16le",
|
|
"utf-16le",
|
|
].forEach((enc) => {
|
|
assertEquals(Buffer.isEncoding(enc), true);
|
|
});
|
|
},
|
|
});
|
|
|
|
Deno.test({
|
|
name: "isEncoding returns false for invalid encodings",
|
|
fn() {
|
|
[
|
|
"utf9",
|
|
"utf-7",
|
|
"Unicode-FTW",
|
|
"new gnu gun",
|
|
false,
|
|
NaN,
|
|
{},
|
|
Infinity,
|
|
[],
|
|
1,
|
|
0,
|
|
-1,
|
|
].forEach((enc) => {
|
|
assertEquals(Buffer.isEncoding(enc), false);
|
|
});
|
|
},
|
|
});
|
|
|
|
// ported from:
|
|
// https://github.com/nodejs/node/blob/56dbe466fdbc598baea3bfce289bf52b97b8b8f7/test/parallel/test-buffer-equals.js#L6
|
|
Deno.test({
|
|
name: "buf.equals",
|
|
fn() {
|
|
const b = Buffer.from("abcdf");
|
|
const c = Buffer.from("abcdf");
|
|
const d = Buffer.from("abcde");
|
|
const e = Buffer.from("abcdef");
|
|
|
|
assertEquals(b.equals(c), true);
|
|
assertEquals(d.equals(d), true);
|
|
assertEquals(
|
|
d.equals(new Uint8Array([0x61, 0x62, 0x63, 0x64, 0x65])),
|
|
true,
|
|
);
|
|
|
|
assertEquals(c.equals(d), false);
|
|
assertEquals(d.equals(e), false);
|
|
|
|
assertThrows(
|
|
// deno-lint-ignore ban-ts-comment
|
|
// @ts-expect-error
|
|
() => Buffer.alloc(1).equals("abc"),
|
|
TypeError,
|
|
`The "otherBuffer" argument must be an instance of Buffer or Uint8Array. Received type string`,
|
|
);
|
|
},
|
|
});
|