import test from 'node:test';
import assert from 'node:assert/strict';
import {FileTransfersSchema,detectType,inspectFileTransfer} from '../packages/core/file-transfer.mjs';
test('actual signatures identify executable families and supported document/media containers',()=>{
 for(const [hex,type] of [['4d5a','pe'],['7f454c46','elf'],['cffaedfe','macho'],['255044462d','pdf'],['504b0304','zip'],['89504e470d0a1a0a','png'],['ffd8ff','jpeg'],['1f8b','gzip']])assert.equal(detectType(Buffer.from(hex,'hex')),type);
 assert.equal(detectType(Buffer.from('GIF89a')),'gif');assert.equal(detectType(Buffer.from('RIFFxxxxWEBP')),'webp');assert.equal(detectType(Buffer.from('public UTF-8 ü')),'text');assert.equal(detectType(Buffer.from([0,255])),'unknown');
 assert.equal(detectType(Buffer.concat([Buffer.from('text prefix'),Buffer.from([0])])),'unknown');
});
test('renamed executables and MIME disguises cannot bypass magic policy',()=>{
 const bytes=Buffer.from('MZmalware');const p={fileTransfers:{download:{blockedTypes:['pe']}}};
 const v=inspectFileTransfer(bytes,p,'download',{filename:'../photo.png',mime:'image/png'});assert.equal(v.decision,'block');assert.equal(v.detectedType,'pe');assert.equal(v.extensionMismatch,true);assert.equal(v.mimeMismatch,true);assert.equal(v.filename,'photo.png');assert.equal(v.size,9);assert.match(v.sha256,/^[a-f0-9]{64}$/);
 for(const field of ['blockExtensionMismatch','blockMimeMismatch'])assert.equal(inspectFileTransfer(bytes,{fileTransfers:{download:{[field]:true}}},'download',{filename:'photo.png',mime:'image/png'}).decision,'block');
});
test('direction-specific limits, allowlists and unknown coverage are centrally enforceable',()=>{
 for(const settings of [{maxBytes:1},{allowTypes:['pdf']},{blockUnknown:true}])assert.equal(inspectFileTransfer(Buffer.from([0,255]),{fileTransfers:{upload:settings}},'upload').decision,'block');
 assert.equal(inspectFileTransfer(Buffer.from('public'),{fileTransfers:{download:{allowTypes:['text']}}},'download').decision,'allow');
 const parsed=FileTransfersSchema.parse({});assert.equal(parsed.download.allowWithoutMalwareScanner,false);assert.throws(()=>FileTransfersSchema.parse({upload:{allowTypes:['exe']}}));
});