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denoland-deno/core/encode_decode_test.js
Bartek Iwańczuk 87d2ba42bf
perf: Optimize TextEncoder and TextDecoder (#4430)
* add tests for "Deno.core.encode" and "Deno.core.decode" for empty inputs
* use "Deno.core.encode" in "TextEncoder"
* use "Deno.core.decode" in "TextDecoder"
* remove "core_decode" and "core_encode" benchmarks
2020-03-19 21:31:56 +01:00

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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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() {
// prettier-ignore
const fixture1 = [
0xf0, 0x9d, 0x93, 0xbd,
0xf0, 0x9d, 0x93, 0xae,
0xf0, 0x9d, 0x94, 0x81,
0xf0, 0x9d, 0x93, 0xbd
];
// prettier-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");
}
main();