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WasmHashes.unittest.js
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WasmHashes.unittest.js
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const { randomBytes, createHash } = require("crypto");
const wasmHashes = {
xxhash64: () => {
const createHash = require("../lib/util/hash/xxhash64");
const createReferenceHash =
require("hash-wasm/dist/xxhash64.umd.min.js").createXXHash64;
return {
createHash,
createReferenceHash: async () => (await createReferenceHash()).init(),
regExp: /^[0-9a-f]{16}$/
};
},
md4: () => {
const createMd4Hash = require("../lib/util/hash/md4");
return {
createHash: createMd4Hash,
createReferenceHash:
parseInt(process.version.slice(1), 10) < 17
? async () => createHash("md4")
: createMd4Hash,
regExp: /^[0-9a-f]{32}$/
};
}
};
for (const name of Object.keys(wasmHashes)) {
const { createHash, createReferenceHash, regExp } = wasmHashes[name]();
describe(name, () => {
const sizes = [
1,
2,
3,
4,
5,
7,
8,
9,
16,
31,
32,
33,
64 - 10,
64 - 9,
64 - 8,
63,
64,
65,
100,
1000,
65536 - 1,
65536,
65536 + 1,
65536 + 31,
65536 * 5,
65536 * 7 - 1,
65536 * 9 + 31
];
const test = (name, sizes) => {
it(name + " should generate a hash from binary data", async () => {
const hash = createHash();
const hashString = createHash();
const reference = await createReferenceHash();
for (const size of sizes) {
const bytes = randomBytes(size);
const string = bytes.toString("base64");
hash.update(bytes);
hashString.update(string, "base64");
reference.update(bytes);
}
const result = hash.digest("hex");
expect(result).toMatch(regExp);
const resultFromString = hashString.digest("hex");
expect(resultFromString).toMatch(regExp);
const expected = reference.digest("hex");
expect(result).toBe(expected);
expect(resultFromString).toBe(expected);
});
};
test("empty hash", []);
for (const size of sizes) {
test(`single update ${size} bytes`, [size]);
}
for (const size1 of sizes) {
for (const size2 of sizes) {
test(`two updates ${size1} + ${size2} bytes`, [size1, size2]);
}
}
test(`many updates 1`, sizes);
test(`many updates 2`, sizes.slice().reverse());
test(`many updates 3`, sizes.concat(sizes.slice().reverse()));
test(`many updates 4`, sizes.slice().reverse().concat(sizes));
});
}