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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assert, assertEquals } from "@std/assert";
import { fromFileUrl, relative } from "@std/path";
import {
brotliCompress,
brotliCompressSync,
brotliDecompressSync,
constants,
createBrotliCompress,
createBrotliDecompress,
createDeflate,
gzip,
gzipSync,
unzipSync,
} from "node:zlib";
import { Buffer } from "node:buffer";
import { createReadStream, createWriteStream } from "node:fs";
import { Readable } from "node:stream";
import { buffer } from "node:stream/consumers";
Deno.test("brotli compression sync", () => {
const buf = Buffer.from("hello world");
const compressed = brotliCompressSync(buf);
const decompressed = brotliDecompressSync(compressed);
assertEquals(decompressed.toString(), "hello world");
});
Deno.test("brotli compression async", async () => {
const buf = Buffer.from("hello world");
const compressed: Buffer = await new Promise((resolve) =>
brotliCompress(buf, (_, res) => {
return resolve(res);
})
);
assertEquals(compressed instanceof Buffer, true);
const decompressed = brotliDecompressSync(compressed);
assertEquals(decompressed.toString(), "hello world");
});
Deno.test("gzip compression sync", () => {
const buf = Buffer.from("hello world");
const compressed = gzipSync(buf);
const decompressed = unzipSync(compressed);
assertEquals(decompressed.toString(), "hello world");
});
Deno.test("brotli compression", {
ignore: true,
}, async () => {
const promise = Promise.withResolvers<void>();
const compress = createBrotliCompress();
const filePath = relative(
Deno.cwd(),
fromFileUrl(new URL("./testdata/lorem_ipsum.txt", import.meta.url)),
);
const input = createReadStream(filePath);
const output = createWriteStream("lorem_ipsum.txt.br");
const stream = input.pipe(compress).pipe(output);
stream.on("finish", () => {
const decompress = createBrotliDecompress();
const input2 = createReadStream("lorem_ipsum.txt.br");
const output2 = createWriteStream("lorem_ipsum.txt");
const stream2 = input2.pipe(decompress).pipe(output2);
stream2.on("close", () => promise.resolve());
});
await Promise.all([
promise.promise,
new Promise((r) => stream.on("close", r)),
]);
const content = Deno.readTextFileSync("lorem_ipsum.txt");
assert(content.startsWith("Lorem ipsum dolor sit amet"), content);
try {
Deno.removeSync("lorem_ipsum.txt.br");
} catch {
// pass
}
try {
Deno.removeSync("lorem_ipsum.txt");
} catch {
// pass
}
});
Deno.test("brotli end-to-end with 4097 bytes", () => {
const a = "a".repeat(4097);
const compressed = brotliCompressSync(a);
const decompressed = brotliDecompressSync(compressed);
assertEquals(decompressed.toString(), a);
});
Deno.test(
"zlib create deflate with dictionary",
async () => {
const { promise, resolve } = Promise.withResolvers<void>();
const handle = createDeflate({
dictionary: Buffer.alloc(0),
});
handle.on("close", () => resolve());
handle.end();
handle.destroy();
await promise;
},
);
Deno.test(
"zlib flush i32",
function () {
const handle = createDeflate({
// @ts-expect-error: passing non-int flush value
flush: "",
});
handle.end();
handle.destroy();
},
);
Deno.test("should work with dataview", () => {
const buf = Buffer.from("hello world");
const compressed = brotliCompressSync(new DataView(buf.buffer));
const decompressed = brotliDecompressSync(compressed);
assertEquals(decompressed.toString(), "hello world");
});
Deno.test("should work with a buffer from an encoded string", () => {
const encoder = new TextEncoder();
const buffer = encoder.encode("hello world");
const buf = Buffer.from(buffer);
const compressed = brotliCompressSync(buf);
const decompressed = brotliDecompressSync(compressed);
assertEquals(decompressed.toString(), "hello world");
});
// https://github.com/denoland/deno/issues/24572
Deno.test("Brotli quality 10 doesn't panic", () => {
const e = brotliCompressSync("abc", {
params: {
[constants.BROTLI_PARAM_QUALITY]: 10,
},
});
assertEquals(
new Uint8Array(e.buffer),
new Uint8Array([11, 1, 128, 97, 98, 99, 3]),
);
});
Deno.test(
"zlib compression with dataview",
() => {
const buf = Buffer.from("hello world");
const compressed = gzipSync(new DataView(buf.buffer));
const decompressed = unzipSync(compressed);
assertEquals(decompressed.toString(), "hello world");
},
);
Deno.test("zlib compression with an encoded string", () => {
const encoder = new TextEncoder();
const buffer = encoder.encode("hello world");
const compressed = gzipSync(buffer);
const decompressed = unzipSync(compressed);
assertEquals(decompressed.toString(), "hello world");
});
Deno.test("brotli large chunk size", async () => {
const input = new Uint8Array(1000000);
for (let i = 0; i < input.length; i++) {
input[i] = Math.random() * 256;
}
const output = await buffer(
Readable.from([input])
.pipe(createBrotliCompress())
.pipe(createBrotliDecompress()),
);
assertEquals(output.length, input.length);
});
Deno.test("brotli decompress flush restore size", async () => {
const input = new Uint8Array(1000000);
const output = await buffer(
Readable.from([input])
.pipe(createBrotliCompress())
.pipe(createBrotliDecompress()),
);
assertEquals(output.length, input.length);
});
Deno.test("createBrotliCompress params", async () => {
const compress = createBrotliCompress({
params: {
[constants.BROTLI_PARAM_QUALITY]: 11,
},
});
const input = new Uint8Array(10000);
for (let i = 0; i < input.length; i++) {
input[i] = Math.random() * 256;
}
const output = await buffer(
Readable.from([input])
.pipe(compress)
.pipe(createBrotliDecompress()),
);
assertEquals(output.length, input.length);
});
Deno.test("gzip() and gzipSync() accept ArrayBuffer", async () => {
const deffered = Promise.withResolvers<void>();
const buf = new ArrayBuffer(0);
let output: Buffer;
gzip(buf, (_err, data) => {
output = data;
deffered.resolve();
});
await deffered.promise;
assert(output! instanceof Buffer);
const outputSync = gzipSync(buf);
assert(outputSync instanceof Buffer);
});
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