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Implement Blob

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Parsa Ghadimi 2018-09-14 17:15:50 +04:30 • committed by Ryan Dahl
parent aaf70ca092
commit 7b7052e1ab
7 changed files with 166 additions and 0 deletions
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35
js/blob_test.ts Normal file
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// Copyright 2018 the Deno authors. All rights reserved. MIT license.
import { test, assert, assertEqual } from "./test_util.ts";
test(async function blobString() {
const b1 = new Blob(["Hello World"]);
const str = "Test";
const b2 = new Blob([b1, str]);
assertEqual(b2.size, b1.size + str.length);
});
test(async function blobBuffer() {
const buffer = new ArrayBuffer(12);
const u8 = new Uint8Array(buffer);
const f1 = new Float32Array(buffer);
const b1 = new Blob([buffer, u8]);
assertEqual(b1.size, 2 * u8.length);
const b2 = new Blob([b1, f1]);
assertEqual(b2.size, 3 * u8.length);
});
test(async function blobSlice() {
const blob = new Blob(["Deno", "Foo"]);
const b1 = blob.slice(0, 3, "Text/HTML");
assert(b1 instanceof Blob);
assertEqual(b1.size, 3);
assertEqual(b1.type, "text/html");
const b2 = blob.slice(-1, 3);
assertEqual(b2.size, 0);
const b3 = blob.slice(100, 3);
assertEqual(b3.size, 0);
const b4 = blob.slice(0, 10);
assertEqual(b4.size, blob.size);
});
// TODO(qti3e) Test the stored data in a Blob after implementing FileReader API.