unit.js

import {assert} from 'chai';

import '../src/dbp-official-signature-pdf-upload';
import '../src/dbp-signature.js';
import {getPDFSignatureCount} from '../src/utils.js';

suite('dbp-official-signature-pdf-upload basics', () => {
    let node;

    suiteSetup(async () => {
        node = document.createElement('dbp-official-signature-pdf-upload');
        document.body.appendChild(node);
        await node.updateComplete;
    });

    suiteTeardown(() => {
        node.remove();
    });

    test('should render', () => {
        assert(node.shadowRoot !== undefined);
    });
});

suite('dbp-signature-app basics', () => {
    let node;

    suiteSetup(async () => {
        node = document.createElement('dbp-app');
        document.body.appendChild(node);
        await node.updateComplete;
    });

    suiteTeardown(() => {
        node.remove();
    });

    test('should render', () => {
        assert(node.shadowRoot !== undefined);
    });
});

suite('pdf signature detection', () => {
    function getPDFFile(data) {
        return new File([new Blob([data])], 'test.pdf', {type: 'application/pdf'});
    }

    test('getPDFSignatureCount', async () => {
        // Produced via pdf-as-web
        let sig1 = '/Type\n/Sig\n/Filter\n/Adobe.PPKLite\n/SubFilter\n/ETSI.CAdES.detached';
        let sig2 = '/Type\n/Sig\n/Filter\n/Adobe.PPKLite\n/SubFilter\n/adbe.pkcs7.detached';
        // Produced via https://www.handy-signatur.at
        let sig3 =
            "/Type /Sig\n/Name (Max Meier)\n/Location ()\n/Reason ()\n/M (D:20210201154123+01'00')\n/Filter /asign.ECDSA\n/SubFilter /ETSI.CAdES.detached";

        assert((await getPDFSignatureCount(getPDFFile(sig1))) === 1);
        assert((await getPDFSignatureCount(getPDFFile(sig2))) === 1);
        assert((await getPDFSignatureCount(getPDFFile(sig3))) === 1);
        assert((await getPDFSignatureCount(getPDFFile(sig1 + sig2))) === 2);
        assert(
            (await getPDFSignatureCount(getPDFFile('foo' + sig1 + 'bar' + sig2 + 'quux'))) === 2
        );
        assert((await getPDFSignatureCount(getPDFFile('\nfoo' + sig1 + 'bar\n'))) === 1);
        assert((await getPDFSignatureCount(getPDFFile('\nfoo' + sig2 + 'bar\n'))) === 1);

        assert((await getPDFSignatureCount(getPDFFile('foobar'))) === 0);
        assert((await getPDFSignatureCount(getPDFFile(''))) === 0);
    });

    test('getPDFSignatureCount real files', async () => {
        async function getRealPDFFile(name) {
            let url = new URL('test/' + name, import.meta.url).href;
            let resp = await fetch(url);
            assert(resp.ok);
            return getPDFFile(await resp.arrayBuffer());
        }

        assert.equal(await getPDFSignatureCount(await getRealPDFFile('QPDF-367-0.pdf')), 1);
        assert.equal(await getPDFSignatureCount(await getRealPDFFile('qual-sig-simple.pdf')), 1);
        assert.equal(
            await getPDFSignatureCount(await getRealPDFFile('qual-sig-tugraz-multiple.pdf')),
            2
        );
    });
});