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// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import { test, assert, assertEquals } from "./test_util.ts";
test(function atobSuccess() {
const text = "hello world";
const encoded = btoa(text);
assertEquals(encoded, "aGVsbG8gd29ybGQ=");
});
test(function btoaSuccess() {
const encoded = "aGVsbG8gd29ybGQ=";
const decoded = atob(encoded);
assertEquals(decoded, "hello world");
});
test(function btoaFailed() {
const text = "你好";
let err;
try {
btoa(text);
} catch (e) {
err = e;
}
assert(!!err);
assertEquals(err.name, "InvalidInput");
});
test(function textDecoder2() {
// prettier-ignore
const fixture = new Uint8Array([
0xf0, 0x9d, 0x93, 0xbd,
0xf0, 0x9d, 0x93, 0xae,
0xf0, 0x9d, 0x94, 0x81,
0xf0, 0x9d, 0x93, 0xbd
]);
const decoder = new TextDecoder();
assertEquals(decoder.decode(fixture), "𝓽𝓮𝔁𝓽");
});
test(function textDecoderASCII() {
const fixture = new Uint8Array([0x89, 0x95, 0x9f, 0xbf]);
const decoder = new TextDecoder("ascii");
assertEquals(decoder.decode(fixture), "‰•Ÿ¿");
});
test(function textDecoderErrorEncoding() {
let didThrow = false;
try {
new TextDecoder("foo");
} catch (e) {
didThrow = true;
assertEquals(e.message, "The encoding label provided ('foo') is invalid.");
}
assert(didThrow);
});
test(function textEncoder2() {
const fixture = "𝓽𝓮𝔁𝓽";
const encoder = new TextEncoder();
// prettier-ignore
assertEquals(Array.from(encoder.encode(fixture)), [
0xf0, 0x9d, 0x93, 0xbd,
0xf0, 0x9d, 0x93, 0xae,
0xf0, 0x9d, 0x94, 0x81,
0xf0, 0x9d, 0x93, 0xbd
]);
});
test(function textDecoderSharedUint8Array() {
const ab = new SharedArrayBuffer(6);
const dataView = new DataView(ab);
const charCodeA = "A".charCodeAt(0);
for (let i = 0; i < ab.byteLength; i++) {
dataView.setUint8(i, charCodeA + i);
}
const ui8 = new Uint8Array(ab);
const decoder = new TextDecoder();
const actual = decoder.decode(ui8);
assertEquals(actual, "ABCDEF");
});
test(function textDecoderSharedInt32Array() {
const ab = new SharedArrayBuffer(8);
const dataView = new DataView(ab);
const charCodeA = "A".charCodeAt(0);
for (let i = 0; i < ab.byteLength; i++) {
dataView.setUint8(i, charCodeA + i);
}
const i32 = new Int32Array(ab);
const decoder = new TextDecoder();
const actual = decoder.decode(i32);
assertEquals(actual, "ABCDEFGH");
});
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