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76 lines
2.3 KiB
TypeScript
76 lines
2.3 KiB
TypeScript
// Ported from Go
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// https://github.com/golang/go/blob/go1.12.5/src/encoding/hex/hex.go
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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import { assertEquals, assertThrows } from "../testing/asserts.ts";
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import { decode, encode } from "./hex.ts";
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const testCases = [
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// encoded(hex) / decoded(Uint8Array)
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["", []],
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["0001020304050607", [0, 1, 2, 3, 4, 5, 6, 7]],
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["08090a0b0c0d0e0f", [8, 9, 10, 11, 12, 13, 14, 15]],
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["f0f1f2f3f4f5f6f7", [0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7]],
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["f8f9fafbfcfdfeff", [0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff]],
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["67", Array.from(new TextEncoder().encode("g"))],
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["e3a1", [0xe3, 0xa1]],
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];
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const errCases: [string, ErrorConstructor, string][] = [
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// encoded(hex) / error / msg
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["0", RangeError, ""],
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["zd4aa", TypeError, "'z'"],
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["d4aaz", TypeError, "'z'"],
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["30313", RangeError, ""],
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["0g", TypeError, "'g'"],
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["00gg", TypeError, "'g'"],
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["0\x01", TypeError, "'\x01'"],
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["ffeed", RangeError, ""],
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];
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Deno.test("[encoding.hex] encode", () => {
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{
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const srcStr = "abc";
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const src = new TextEncoder().encode(srcStr);
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const dest = encode(src);
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assertEquals(src, new Uint8Array([97, 98, 99]));
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assertEquals(dest.length, 6);
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}
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for (const [enc, dec] of testCases) {
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const src = new Uint8Array(dec as number[]);
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const dest = encode(src);
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assertEquals(dest.length, src.length * 2);
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assertEquals(new TextDecoder().decode(dest), enc);
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}
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});
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Deno.test("[encoding.hex] decode", () => {
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// Case for decoding uppercase hex characters, since
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// Encode always uses lowercase.
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const extraTestcase = [
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["F8F9FAFBFCFDFEFF", [0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff]],
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];
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const cases = testCases.concat(extraTestcase);
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for (const [enc, dec] of cases) {
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const src = new TextEncoder().encode(enc as string);
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const dest = decode(src);
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assertEquals(Array.from(dest), Array.from(dec as number[]));
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}
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});
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Deno.test("[encoding.hex] decode error", () => {
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for (const [input, expectedErr, msg] of errCases) {
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assertThrows(
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() => decode(new TextEncoder().encode(input)),
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expectedErr,
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msg,
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);
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}
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});
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