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denoland-deno/core/encode_decode_test.js

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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
"use strict";
function assert(cond) {
if (!cond) {
throw Error("assert");
}
}
function assertArrayEquals(a1, a2) {
if (a1.length !== a2.length) throw Error("assert");
for (const index in a1) {
if (a1[index] !== a2[index]) {
throw Error("assert");
}
}
}
function main() {
// deno-fmt-ignore
const fixture1 = [
0xf0, 0x9d, 0x93, 0xbd,
0xf0, 0x9d, 0x93, 0xae,
0xf0, 0x9d, 0x94, 0x81,
0xf0, 0x9d, 0x93, 0xbd
];
// deno-fmt-ignore
const fixture2 = [
72, 101, 108, 108,
111, 32, 239, 191,
189, 239, 191, 189,
32, 87, 111, 114,
108, 100
];
const empty = Deno.core.encode("");
if (empty.length !== 0) throw new Error("assert");
assertArrayEquals(Array.from(Deno.core.encode("𝓽𝓮𝔁𝓽")), fixture1);
assertArrayEquals(
Array.from(Deno.core.encode("Hello \udc12\ud834 World")),
fixture2,
);
const emptyBuf = Deno.core.decode(new Uint8Array(0));
if (emptyBuf !== "") throw new Error("assert");
assert(Deno.core.decode(new Uint8Array(fixture1)) === "𝓽𝓮𝔁𝓽");
assert(Deno.core.decode(new Uint8Array(fixture2)) === "Hello <20><> World");
// See https://github.com/denoland/deno/issues/6649
let thrown = false;
try {
Deno.core.decode(new Uint8Array(2 ** 29));
} catch (e) {
thrown = true;
assert(e instanceof RangeError);
assert(e.message === "string too long");
}
assert(thrown);
}
main();