mirror of
https://github.com/denoland/deno.git
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193 lines
4.9 KiB
TypeScript
193 lines
4.9 KiB
TypeScript
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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import { test, assert, assertEquals } from "./test_util.ts";
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test(function btoaSuccess(): void {
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const text = "hello world";
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const encoded = btoa(text);
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assertEquals(encoded, "aGVsbG8gd29ybGQ=");
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});
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test(function atobSuccess(): void {
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const encoded = "aGVsbG8gd29ybGQ=";
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const decoded = atob(encoded);
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assertEquals(decoded, "hello world");
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});
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test(function atobWithAsciiWhitespace(): void {
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const encodedList = [
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" aGVsbG8gd29ybGQ=",
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" aGVsbG8gd29ybGQ=",
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"aGVsbG8gd29ybGQ= ",
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"aGVsbG8gd29ybGQ=\n",
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"aGVsbG\t8gd29ybGQ=",
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`aGVsbG\t8g
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d29ybGQ=`
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];
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for (const encoded of encodedList) {
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const decoded = atob(encoded);
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assertEquals(decoded, "hello world");
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}
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});
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test(function atobThrows(): void {
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let threw = false;
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try {
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atob("aGVsbG8gd29ybGQ==");
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} catch (e) {
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threw = true;
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}
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assert(threw);
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});
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test(function atobThrows2(): void {
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let threw = false;
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try {
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atob("aGVsbG8gd29ybGQ===");
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} catch (e) {
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threw = true;
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}
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assert(threw);
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});
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test(function btoaFailed(): void {
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const text = "你好";
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let err;
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try {
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btoa(text);
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} catch (e) {
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err = e;
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}
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assert(!!err);
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assertEquals(err.name, "InvalidInput");
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});
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test(function textDecoder2(): void {
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// prettier-ignore
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const fixture = new Uint8Array([
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0xf0, 0x9d, 0x93, 0xbd,
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0xf0, 0x9d, 0x93, 0xae,
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0xf0, 0x9d, 0x94, 0x81,
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0xf0, 0x9d, 0x93, 0xbd
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]);
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const decoder = new TextDecoder();
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assertEquals(decoder.decode(fixture), "𝓽𝓮𝔁𝓽");
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});
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test(function textDecoderIgnoreBOM(): void {
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// prettier-ignore
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const fixture = new Uint8Array([
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0xef, 0xbb, 0xbf,
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0xf0, 0x9d, 0x93, 0xbd,
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0xf0, 0x9d, 0x93, 0xae,
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0xf0, 0x9d, 0x94, 0x81,
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0xf0, 0x9d, 0x93, 0xbd
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]);
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const decoder = new TextDecoder("utf-8", { ignoreBOM: true });
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assertEquals(decoder.decode(fixture), "𝓽𝓮𝔁𝓽");
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});
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test(function textDecoderNotBOM(): void {
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// prettier-ignore
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const fixture = new Uint8Array([
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0xef, 0xbb, 0x89,
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0xf0, 0x9d, 0x93, 0xbd,
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0xf0, 0x9d, 0x93, 0xae,
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0xf0, 0x9d, 0x94, 0x81,
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0xf0, 0x9d, 0x93, 0xbd
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]);
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const decoder = new TextDecoder("utf-8", { ignoreBOM: true });
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assertEquals(decoder.decode(fixture), "ﻉ𝓽𝓮𝔁𝓽");
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});
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test(function textDecoderASCII(): void {
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const fixture = new Uint8Array([0x89, 0x95, 0x9f, 0xbf]);
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const decoder = new TextDecoder("ascii");
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assertEquals(decoder.decode(fixture), "‰•Ÿ¿");
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});
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test(function textDecoderErrorEncoding(): void {
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let didThrow = false;
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try {
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new TextDecoder("foo");
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} catch (e) {
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didThrow = true;
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assertEquals(e.message, "The encoding label provided ('foo') is invalid.");
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}
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assert(didThrow);
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});
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test(function textEncoder(): void {
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const fixture = "𝓽𝓮𝔁𝓽";
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const encoder = new TextEncoder();
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// prettier-ignore
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assertEquals(Array.from(encoder.encode(fixture)), [
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0xf0, 0x9d, 0x93, 0xbd,
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0xf0, 0x9d, 0x93, 0xae,
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0xf0, 0x9d, 0x94, 0x81,
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0xf0, 0x9d, 0x93, 0xbd
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]);
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});
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test(function textEncodeInto(): void {
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const fixture = "text";
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const encoder = new TextEncoder();
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const bytes = new Uint8Array(5);
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const result = encoder.encodeInto(fixture, bytes);
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assertEquals(result.read, 4);
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assertEquals(result.written, 4);
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// prettier-ignore
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assertEquals(Array.from(bytes), [
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0x74, 0x65, 0x78, 0x74, 0x00,
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]);
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});
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test(function textEncodeInto2(): void {
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const fixture = "𝓽𝓮𝔁𝓽";
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const encoder = new TextEncoder();
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const bytes = new Uint8Array(17);
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const result = encoder.encodeInto(fixture, bytes);
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assertEquals(result.read, 8);
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assertEquals(result.written, 16);
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// prettier-ignore
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assertEquals(Array.from(bytes), [
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0xf0, 0x9d, 0x93, 0xbd,
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0xf0, 0x9d, 0x93, 0xae,
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0xf0, 0x9d, 0x94, 0x81,
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0xf0, 0x9d, 0x93, 0xbd, 0x00,
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]);
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});
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test(function textDecoderSharedUint8Array(): void {
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const ab = new SharedArrayBuffer(6);
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const dataView = new DataView(ab);
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const charCodeA = "A".charCodeAt(0);
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for (let i = 0; i < ab.byteLength; i++) {
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dataView.setUint8(i, charCodeA + i);
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}
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const ui8 = new Uint8Array(ab);
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const decoder = new TextDecoder();
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const actual = decoder.decode(ui8);
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assertEquals(actual, "ABCDEF");
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});
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test(function textDecoderSharedInt32Array(): void {
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const ab = new SharedArrayBuffer(8);
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const dataView = new DataView(ab);
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const charCodeA = "A".charCodeAt(0);
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for (let i = 0; i < ab.byteLength; i++) {
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dataView.setUint8(i, charCodeA + i);
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}
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const i32 = new Int32Array(ab);
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const decoder = new TextDecoder();
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const actual = decoder.decode(i32);
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assertEquals(actual, "ABCDEFGH");
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});
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test(function toStringShouldBeWebCompatibility(): void {
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const encoder = new TextEncoder();
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assertEquals(encoder.toString(), "[object TextEncoder]");
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const decoder = new TextDecoder();
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assertEquals(decoder.toString(), "[object TextDecoder]");
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});
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