4c30af9ea3
Index photos and videos from the device library into a client-pushed ios_library source, upload originals in resumable chunks, and review, approve, and share project variants with expo-video and the native share sheet. Pure logic for chunking, resume, indexing, and variants is unit tested. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NLSCTnhge4umMnemGXWr1w
45 lines
1.6 KiB
TypeScript
45 lines
1.6 KiB
TypeScript
import { createHash } from "node:crypto";
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import { describe, expect, it } from "vitest";
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import { Sha256 } from "./media-sha256";
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const node = (data: Uint8Array) => createHash("sha256").update(data).digest("hex");
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const text = (value: string) => new TextEncoder().encode(value);
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describe("Sha256", () => {
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it("matches known vectors", () => {
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expect(new Sha256().hex()).toBe(
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"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
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);
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expect(new Sha256().update(text("abc")).hex()).toBe(
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"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad",
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);
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});
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it("matches node:crypto across block boundaries", () => {
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for (const size of [1, 55, 56, 63, 64, 65, 119, 120, 128, 1000, 4097]) {
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const data = new Uint8Array(size);
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for (let index = 0; index < size; index++) data[index] = (index * 13 + size) & 0xff;
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expect(new Sha256().update(data).hex()).toBe(node(data));
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}
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});
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it("gives the same digest however the input is split", () => {
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const data = new Uint8Array(5000);
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for (let index = 0; index < data.length; index++) data[index] = (index * 7) & 0xff;
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for (const step of [1, 3, 63, 64, 100, 4096]) {
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const hash = new Sha256();
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for (let offset = 0; offset < data.length; offset += step) {
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hash.update(data.subarray(offset, offset + step));
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}
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expect(hash.hex()).toBe(node(data));
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}
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});
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it("refuses updates after finishing", () => {
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const hash = new Sha256();
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hash.hex();
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expect(() => hash.update(text("x"))).toThrow();
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expect(() => hash.hex()).toThrow();
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});
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});
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