import { describe, it, before, after } from "node:test"; import assert from "node:assert/strict"; import { createServer, type Server } from "node:http"; import { mkdtempSync, readFileSync, rmSync } from "node:fs"; import { tmpdir } from "node:os"; import { join } from "node:path"; import { captureSite, looksLikeVideoFile, type CaptureResult } from "../src/capture/capture.js"; // A minimal-but-valid mp4 shape: [size]"ftyp" brand box followed by payload bytes. const FULL_MP4 = Buffer.concat([ Buffer.from([0x00, 0x00, 0x00, 0x18]), Buffer.from("ftypisom"), Buffer.from([0x00, 0x00, 0x02, 0x00]), Buffer.from("isomiso2"), Buffer.alloc(64_000, 0x07), ]); // The pathological range fragment observed in the wild: a tail slice (moov atom region) // of the file — starts mid-container, no ftyp/EBML magic. const TAIL_FRAGMENT = FULL_MP4.subarray(FULL_MP4.length - 1000); describe("looksLikeVideoFile (container magic)", () => { it("accepts mp4-family (ftyp), webm/mkv (EBML), and ogg (OggS) heads", () => { assert.equal(looksLikeVideoFile(FULL_MP4), true); assert.equal(looksLikeVideoFile(Buffer.concat([Buffer.from([0x1a, 0x45, 0xdf, 0xa3]), Buffer.alloc(100)])), true); assert.equal(looksLikeVideoFile(Buffer.concat([Buffer.from("OggS"), Buffer.alloc(100)])), true); }); it("rejects range fragments, HTML error bodies, and tiny buffers", () => { assert.equal(looksLikeVideoFile(TAIL_FRAGMENT), false, "moov-tail fragment is not a video file"); assert.equal(looksLikeVideoFile(Buffer.from("404")), false); assert.equal(looksLikeVideoFile(Buffer.from([0x00, 0x00])), false); }); }); // A

Video page