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denoland-deno/cli/tests/unit_node/buffer_test.ts
Matt Mastracci ffbb1bad03
chore(cli): Use @test_util for relative path for unit tests (#22327)
This removes the majority of `../../../../../../test_util` relative
imports from the codebase, allowing us to move this code more easily in
the future.
2024-02-07 09:51:28 -07:00

650 lines
17 KiB
TypeScript

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { Buffer } from "node:buffer";
import { assertEquals, assertThrows } from "@test_util/std/assert/mod.ts";
Deno.test({
name: "[node/buffer] alloc fails if size is not a number",
fn() {
const invalidSizes = [{}, "1", "foo", []];
for (const size of invalidSizes) {
assertThrows(
() => {
// deno-lint-ignore ban-ts-comment
// @ts-expect-error
Buffer.alloc(size);
},
TypeError,
'"size" argument must be of type number',
"should throw on non-number size",
);
}
},
});
Deno.test({
name: "[node/buffer] alloc allocates a buffer with the expected size",
fn() {
const buffer: Buffer = Buffer.alloc(1);
assertEquals(buffer.length, 1, "Buffer size should be 1");
assertEquals(buffer[0], 0, "Content should be filled with 0");
},
});
Deno.test({
name: "[node/buffer] alloc(0) creates an empty buffer",
fn() {
const buffer: Buffer = Buffer.alloc(0);
assertEquals(buffer.length, 0, "Buffer size should be 0");
},
});
Deno.test({
name: "[node/buffer] allocUnsafe allocates a buffer with the expected size",
fn() {
const buffer: Buffer = Buffer.allocUnsafe(1);
assertEquals(buffer.length, 1, "Buffer size should be 1");
},
});
Deno.test({
name: "[node/buffer] allocUnsafe(0) creates an empty buffer",
fn() {
const buffer: Buffer = Buffer.allocUnsafe(0);
assertEquals(buffer.length, 0, "Buffer size should be 0");
},
});
Deno.test({
name: "[node/buffer] alloc filled correctly with integer",
fn() {
const buffer: Buffer = Buffer.alloc(3, 5);
assertEquals(buffer, Buffer.from([5, 5, 5]));
},
});
Deno.test({
name: "[node/buffer] alloc filled correctly with single character",
fn() {
assertEquals(Buffer.alloc(5, "a"), Buffer.from([97, 97, 97, 97, 97]));
},
});
Deno.test({
name: "[node/buffer] alloc filled correctly with base64 string",
fn() {
assertEquals(
Buffer.alloc(11, "aGVsbG8gd29ybGQ=", "base64"),
Buffer.from([104, 101, 108, 108, 111, 32, 119, 111, 114, 108, 100]),
);
},
});
Deno.test({
name: "[node/buffer] alloc filled correctly with hex string",
fn() {
assertEquals(
Buffer.alloc(4, "64656e6f", "hex"),
Buffer.from([100, 101, 110, 111]),
);
},
});
Deno.test({
name:
"[node/buffer] alloc filled correctly with hex string smaller than alloc size",
fn() {
assertEquals(
Buffer.alloc(13, "64656e6f", "hex").toString(),
"denodenodenod",
);
},
});
Deno.test({
name:
"[node/buffer] alloc filled correctly with Uint8Array smaller than alloc size",
fn() {
// todo(fbaltor): remove this 'any' when @types/node fixes https://github.com/DefinitelyTyped/DefinitelyTyped/discussions/65831
// deno-lint-ignore no-explicit-any
const arr: any = new Uint8Array([100, 101]);
assertEquals(
Buffer.alloc(7, arr),
Buffer.from([100, 101, 100, 101, 100, 101, 100]),
);
assertEquals(
Buffer.alloc(6, arr),
Buffer.from([100, 101, 100, 101, 100, 101]),
);
},
});
Deno.test({
name:
"[node/buffer] alloc filled correctly with Uint8Array bigger than alloc size",
fn() {
assertEquals(
// todo(fbaltor): remove this 'any' when @types/node fixes https://github.com/DefinitelyTyped/DefinitelyTyped/discussions/65831
// deno-lint-ignore no-explicit-any
Buffer.alloc(1, new Uint8Array([100, 101]) as any),
Buffer.from([100]),
);
},
});
Deno.test({
name: "[node/buffer] alloc filled correctly with Buffer",
fn() {
assertEquals(
Buffer.alloc(6, Buffer.from([100, 101])),
Buffer.from([100, 101, 100, 101, 100, 101]),
);
assertEquals(
Buffer.alloc(7, Buffer.from([100, 101])),
Buffer.from([100, 101, 100, 101, 100, 101, 100]),
);
},
});
// tests from:
// https://github.com/nodejs/node/blob/56dbe466fdbc598baea3bfce289bf52b97b8b8f7/test/parallel/test-buffer-bytelength.js#L70
Deno.test({
name: "[node/buffer] Byte length is the expected for strings",
fn() {
// Special case: zero length string
assertEquals(Buffer.byteLength("", "ascii"), 0);
// deno-lint-ignore no-explicit-any
assertEquals(Buffer.byteLength("", "HeX" as any), 0);
// utf8
assertEquals(Buffer.byteLength("∑éllö wørl∂!", "utf-8"), 19);
assertEquals(Buffer.byteLength("κλμνξο", "utf8"), 12);
assertEquals(Buffer.byteLength("挵挶挷挸挹", "utf-8"), 15);
// deno-lint-ignore no-explicit-any
assertEquals(Buffer.byteLength("𠝹𠱓𠱸", "UTF8" as any), 12);
// Without an encoding, utf8 should be assumed
assertEquals(Buffer.byteLength("hey there"), 9);
assertEquals(Buffer.byteLength("𠱸挶νξ#xx :)"), 17);
// deno-lint-ignore no-explicit-any
assertEquals(Buffer.byteLength("hello world", "" as any), 11);
// It should also be assumed with unrecognized encoding
// deno-lint-ignore no-explicit-any
assertEquals(Buffer.byteLength("hello world", "abc" as any), 11);
// deno-lint-ignore no-explicit-any
assertEquals(Buffer.byteLength("ßœ∑≈", "unkn0wn enc0ding" as any), 10);
// base64
assertEquals(Buffer.byteLength("aGVsbG8gd29ybGQ=", "base64"), 11);
// deno-lint-ignore no-explicit-any
assertEquals(Buffer.byteLength("aGVsbG8gd29ybGQ=", "BASE64" as any), 11);
assertEquals(Buffer.byteLength("bm9kZS5qcyByb2NrcyE=", "base64"), 14);
assertEquals(Buffer.byteLength("aGkk", "base64"), 3);
assertEquals(
Buffer.byteLength("bHNrZGZsa3NqZmtsc2xrZmFqc2RsZmtqcw==", "base64"),
25,
);
// special padding
assertEquals(Buffer.byteLength("aaa=", "base64"), 2);
assertEquals(Buffer.byteLength("aaaa==", "base64"), 3);
assertEquals(Buffer.byteLength("Il était tué"), 14);
assertEquals(Buffer.byteLength("Il était tué", "utf8"), 14);
["ascii", "latin1", "binary"]
.reduce((es: string[], e: string) => es.concat(e, e.toUpperCase()), [])
.forEach((encoding: string) => {
// deno-lint-ignore no-explicit-any
assertEquals(Buffer.byteLength("Il était tué", encoding as any), 12);
});
["ucs2", "ucs-2", "utf16le", "utf-16le"]
.reduce((es: string[], e: string) => es.concat(e, e.toUpperCase()), [])
.forEach((encoding: string) => {
// deno-lint-ignore no-explicit-any
assertEquals(Buffer.byteLength("Il était tué", encoding as any), 24);
});
},
});
Deno.test({
name: "[node/buffer] Byte length is the expected one for non-strings",
fn() {
assertEquals(
Buffer.byteLength(Buffer.alloc(0)),
Buffer.alloc(0).byteLength,
"Byte length differs on buffers",
);
},
});
Deno.test({
name: "[node/buffer] Two Buffers are concatenated",
fn() {
const data1 = [1, 2, 3];
const data2 = [4, 5, 6];
const buffer1 = Buffer.from(data1);
const buffer2 = Buffer.from(data2);
const resultBuffer = Buffer.concat([buffer1, buffer2]);
const expectedBuffer = Buffer.from([...data1, ...data2]);
assertEquals(resultBuffer, expectedBuffer);
},
});
Deno.test({
name: "[node/buffer] A single buffer concatenates and return the same buffer",
fn() {
const buffer1 = Buffer.alloc(1);
const resultBuffer = Buffer.concat([buffer1]);
assertEquals(resultBuffer.length, 1, "Buffer length should be 1");
},
});
Deno.test({
name: "[node/buffer] No buffers concat returns an empty buffer",
fn() {
const resultBuffer = Buffer.concat([]);
assertEquals(resultBuffer.length, 0, "Buffer length should be 0");
},
});
Deno.test({
name: "[node/buffer] Buffer concat respects totalLength parameter",
fn() {
const maxLength1 = 10;
const buffer1 = Buffer.alloc(2);
const buffer2 = Buffer.alloc(2);
assertEquals(
Buffer.concat([buffer1, buffer2], maxLength1).length,
maxLength1,
);
const maxLength2 = 3;
const buffer3 = Buffer.alloc(2);
const buffer4 = Buffer.alloc(2);
assertEquals(
Buffer.concat([buffer3, buffer4], maxLength2).length,
maxLength2,
);
},
});
Deno.test({
name: "[node/buffer] Buffer 8 bit unsigned integers",
fn() {
const buffer = Buffer.from([0xff, 0x2a, 0x2a, 0x2a]);
assertEquals(buffer.readUInt8(0), 255);
assertEquals(buffer.readUInt8(1), 42);
assertEquals(buffer.readUInt8(2), 42);
assertEquals(buffer.readUInt8(3), 42);
},
});
Deno.test({
name: "[node/buffer] Buffer 16 bit unsigned integers",
fn() {
const buffer = Buffer.from([0x00, 0x2a, 0x42, 0x3f]);
assertEquals(buffer.readUInt16BE(0), 0x2a);
assertEquals(buffer.readUInt16BE(1), 0x2a42);
assertEquals(buffer.readUInt16BE(2), 0x423f);
assertEquals(buffer.readUInt16LE(0), 0x2a00);
assertEquals(buffer.readUInt16LE(1), 0x422a);
assertEquals(buffer.readUInt16LE(2), 0x3f42);
buffer[0] = 0xfe;
buffer[1] = 0xfe;
assertEquals(buffer.readUInt16BE(0), 0xfefe);
assertEquals(buffer.readUInt16LE(0), 0xfefe);
},
});
Deno.test({
name: "[node/buffer] Buffer 32 bit unsigned integers",
fn() {
const buffer = Buffer.from([0x32, 0x65, 0x42, 0x56, 0x23, 0xff]);
assertEquals(buffer.readUInt32BE(0), 0x32654256);
assertEquals(buffer.readUInt32BE(1), 0x65425623);
assertEquals(buffer.readUInt32BE(2), 0x425623ff);
assertEquals(buffer.readUInt32LE(0), 0x56426532);
assertEquals(buffer.readUInt32LE(1), 0x23564265);
assertEquals(buffer.readUInt32LE(2), 0xff235642);
},
});
Deno.test({
name: "[node/buffer] Buffer readUIntBE",
fn() {
const buffer = Buffer.from([
0x01,
0x02,
0x03,
0x04,
0x05,
0x06,
0x07,
0x08,
]);
assertEquals(buffer.readUIntBE(0, 1), 0x01);
assertEquals(buffer.readUIntBE(0, 2), 0x0102);
assertEquals(buffer.readUIntBE(0, 4), 0x01020304);
},
});
Deno.test({
name: "[node/buffer] Buffer readUIntLE",
fn() {
const buffer = Buffer.from([
0x01,
0x02,
0x03,
0x04,
0x05,
0x06,
0x07,
0x08,
]);
assertEquals(buffer.readUIntLE(0, 1), 0x01);
assertEquals(buffer.readUIntLE(0, 2), 0x0201);
assertEquals(buffer.readUIntLE(0, 4), 0x04030201);
},
});
Deno.test({
name: "[node/buffer] Buffer copy works as expected",
fn() {
const data1 = new Uint8Array([1, 2, 3]);
const data2 = new Uint8Array([4, 5, 6]);
const buffer1 = Buffer.from(data1);
const buffer2 = Buffer.from(data2);
//Mutates data_1
data1.set(data2);
//Mutates buffer_1
buffer2.copy(buffer1);
assertEquals(
Buffer.from(data1),
buffer1,
);
},
});
Deno.test({
name: "[node/buffer] Buffer copy respects the starting point for copy",
fn() {
const buffer1 = Buffer.from([1, 2, 3]);
const buffer2 = Buffer.alloc(8);
buffer1.copy(buffer2, 5);
const expected = Buffer.from([0, 0, 0, 0, 0, 1, 2, 3]);
assertEquals(
buffer2,
expected,
);
},
});
Deno.test({
name:
"[node/buffer] Buffer copy doesn't throw on offset but copies until offset reached",
fn() {
const buffer1 = Buffer.from([1, 2, 3]);
const buffer2 = Buffer.alloc(8);
const writtenBytes1 = buffer1.copy(buffer2, 6);
assertEquals(
writtenBytes1,
2,
);
assertEquals(
buffer2,
Buffer.from([0, 0, 0, 0, 0, 0, 1, 2]),
);
const buffer3 = Buffer.from([1, 2, 3]);
const buffer4 = Buffer.alloc(8);
const writtenBytes2 = buffer3.copy(buffer4, 8);
assertEquals(
writtenBytes2,
0,
);
assertEquals(
buffer4,
Buffer.from([0, 0, 0, 0, 0, 0, 0, 0]),
);
},
});
Deno.test({
name: "[node/buffer] Buffer from string creates a Buffer",
fn() {
const buffer: Buffer = Buffer.from("test");
assertEquals(buffer.length, 4, "Buffer length should be 4");
assertEquals(
buffer.toString(),
"test",
"Buffer to string should recover the string",
);
},
});
Deno.test({
name: "[node/buffer] Buffer from string hex",
fn() {
for (const encoding of ["hex", "HEX"]) {
const buffer: Buffer = Buffer.from(
"7468697320697320612074c3a97374",
// deno-lint-ignore no-explicit-any
encoding as any,
);
assertEquals(buffer.length, 15, "Buffer length should be 15");
assertEquals(
buffer.toString(),
"this is a tést",
"Buffer to string should recover the string",
);
}
},
});
Deno.test({
name: "[node/buffer] Buffer from string base64",
fn() {
for (const encoding of ["base64", "BASE64"]) {
const buffer: Buffer = Buffer.from(
"dGhpcyBpcyBhIHTDqXN0",
// deno-lint-ignore no-explicit-any
encoding as any,
);
assertEquals(buffer.length, 15, "Buffer length should be 15");
assertEquals(
buffer.toString(),
"this is a tést",
"Buffer to string should recover the string",
);
}
},
});
Deno.test({
name: "[node/buffer] Buffer to string base64",
fn() {
for (const encoding of ["base64", "BASE64"]) {
const buffer: Buffer = Buffer.from("deno land");
assertEquals(
// deno-lint-ignore no-explicit-any
buffer.toString(encoding as any),
"ZGVubyBsYW5k",
"Buffer to string should recover the string in base64",
);
}
const b64 = "dGhpcyBpcyBhIHTDqXN0";
assertEquals(Buffer.from(b64, "base64").toString("base64"), b64);
},
});
Deno.test({
name: "[node/buffer] Buffer to string hex",
fn() {
for (const encoding of ["hex", "HEX"]) {
const buffer: Buffer = Buffer.from("deno land");
assertEquals(
// deno-lint-ignore no-explicit-any
buffer.toString(encoding as any),
"64656e6f206c616e64",
"Buffer to string should recover the string",
);
}
const hex = "64656e6f206c616e64";
assertEquals(Buffer.from(hex, "hex").toString("hex"), hex);
},
});
Deno.test({
name: "[node/buffer] Buffer from string invalid encoding",
fn() {
const defaultToUtf8Encodings = [null, 5, {}, true, false, ""];
const invalidEncodings = ["deno", "base645"];
for (const encoding of defaultToUtf8Encodings) {
// deno-lint-ignore no-explicit-any
assertEquals(Buffer.from("yes", encoding as any).toString(), "yes");
}
for (const encoding of invalidEncodings) {
assertThrows(
() => {
// deno-lint-ignore no-explicit-any
Buffer.from("yes", encoding as any);
},
TypeError,
`Unknown encoding: ${encoding}`,
);
}
},
});
Deno.test({
name: "[node/buffer] Buffer from another buffer creates a Buffer",
fn() {
const buffer: Buffer = Buffer.from(Buffer.from("test"));
assertEquals(buffer.length, 4, "Buffer length should be 4");
assertEquals(
buffer.toString(),
"test",
"Buffer to string should recover the string",
);
},
});
Deno.test({
name: "[node/buffer] isBuffer returns true if the object is a buffer",
fn() {
assertEquals(Buffer.isBuffer(Buffer.from("test")), true);
},
});
Deno.test({
name: "[node/buffer] isBuffer returns false if the object is not a buffer",
fn() {
assertEquals(Buffer.isBuffer({ test: 3 }), false);
assertEquals(Buffer.isBuffer(new Uint8Array()), false);
},
});
Deno.test({
name: "[node/buffer] Buffer toJSON",
fn() {
assertEquals(
JSON.stringify(Buffer.from("deno")),
'{"type":"Buffer","data":[100,101,110,111]}',
);
},
});
Deno.test({
name: "[node/buffer] 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: "[node/buffer] slice with infinity returns empty buffer",
fn() {
const buf = Buffer.from([1, 2, 3, 4, 5]);
assertEquals(buf.slice(Infinity).length, 0);
},
});
Deno.test({
name: "[node/buffer] 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: "[node/buffer] isEncoding returns false for invalid encodings",
fn() {
[
"utf9",
"utf-7",
"Unicode-FTW",
"new gnu gun",
false,
NaN,
{},
Infinity,
[],
1,
0,
-1,
].forEach((enc) => {
// @ts-expect-error This deliberately ignores the type constraint
assertEquals(Buffer.isEncoding(enc), false);
});
},
});
Deno.test({
name:
"[node/buffer] utf8Write handle missing optional length argument (https://github.com/denoland/deno_std/issues/2046)",
fn() {
const buf = Buffer.alloc(8);
// @ts-expect-error Buffer.prototype.utf8Write is an undocumented API
assertEquals(buf.utf8Write("abc", 0), 3);
assertEquals([...buf], [0x61, 0x62, 0x63, 0, 0, 0, 0, 0]);
},
});