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120 lines
3.2 KiB
TypeScript
120 lines
3.2 KiB
TypeScript
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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import {
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assert,
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assertEquals,
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assertStringIncludes,
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unitTest,
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} from "./test_util.ts";
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import { concat } from "../../../test_util/std/bytes/mod.ts";
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unitTest(function blobString(): void {
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const b1 = new Blob(["Hello World"]);
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const str = "Test";
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const b2 = new Blob([b1, str]);
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assertEquals(b2.size, b1.size + str.length);
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});
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unitTest(function blobBuffer(): void {
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const buffer = new ArrayBuffer(12);
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const u8 = new Uint8Array(buffer);
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const f1 = new Float32Array(buffer);
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const b1 = new Blob([buffer, u8]);
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assertEquals(b1.size, 2 * u8.length);
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const b2 = new Blob([b1, f1]);
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assertEquals(b2.size, 3 * u8.length);
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});
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unitTest(function blobSlice(): void {
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const blob = new Blob(["Deno", "Foo"]);
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const b1 = blob.slice(0, 3, "Text/HTML");
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assert(b1 instanceof Blob);
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assertEquals(b1.size, 3);
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assertEquals(b1.type, "text/html");
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const b2 = blob.slice(-1, 3);
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assertEquals(b2.size, 0);
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const b3 = blob.slice(100, 3);
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assertEquals(b3.size, 0);
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const b4 = blob.slice(0, 10);
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assertEquals(b4.size, blob.size);
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});
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unitTest(function blobInvalidType(): void {
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const blob = new Blob(["foo"], {
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type: "\u0521",
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});
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assertEquals(blob.type, "");
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});
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unitTest(function blobShouldNotThrowError(): void {
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let hasThrown = false;
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try {
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// deno-lint-ignore no-explicit-any
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const options1: any = {
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ending: "utf8",
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hasOwnProperty: "hasOwnProperty",
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};
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const options2 = Object.create(null);
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new Blob(["Hello World"], options1);
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new Blob(["Hello World"], options2);
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} catch {
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hasThrown = true;
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}
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assertEquals(hasThrown, false);
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});
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/* TODO https://github.com/denoland/deno/issues/7540
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unitTest(function nativeEndLine(): void {
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const options = {
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ending: "native",
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} as const;
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const blob = new Blob(["Hello\nWorld"], options);
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assertEquals(blob.size, Deno.build.os === "windows" ? 12 : 11);
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});
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*/
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unitTest(async function blobText(): Promise<void> {
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const blob = new Blob(["Hello World"]);
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assertEquals(await blob.text(), "Hello World");
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});
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unitTest(async function blobStream(): Promise<void> {
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const blob = new Blob(["Hello World"]);
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const stream = blob.stream();
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assert(stream instanceof ReadableStream);
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const reader = stream.getReader();
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let bytes = new Uint8Array();
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const read = async (): Promise<void> => {
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const { done, value } = await reader.read();
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if (!done && value) {
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bytes = concat(bytes, value);
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return read();
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}
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};
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await read();
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const decoder = new TextDecoder();
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assertEquals(decoder.decode(bytes), "Hello World");
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});
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unitTest(async function blobArrayBuffer(): Promise<void> {
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const uint = new Uint8Array([102, 111, 111]);
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const blob = new Blob([uint]);
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assertEquals(await blob.arrayBuffer(), uint.buffer);
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});
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unitTest(function blobConstructorNameIsBlob(): void {
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const blob = new Blob();
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assertEquals(blob.constructor.name, "Blob");
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});
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unitTest(function blobCustomInspectFunction(): void {
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const blob = new Blob();
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assertEquals(
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Deno.inspect(blob),
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`Blob { size: 0, type: "" }`,
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);
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assertStringIncludes(Deno.inspect(Blob.prototype), "Blob");
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});
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