dateKeys-dart/test/cms_vm_test.dart

// The differential of ECDSA and RSA against the Go reference on the VM,
// with every case of test/vectors/cms_ecdsa.json and cms_rsa.json. And the
// part of the files test/vectors/cms_*.json that cms_vectors.g.dart holds
// for the tests compiled to JavaScript: for each section, the cases whose
// index is a multiple of the step that "every" gives.
@TestOn('vm')
library;

import 'dart:convert';
import 'dart:io';

import 'package:test/test.dart';

import 'cms_support.dart';
import 'vectors/cms_vectors.g.dart';

const _embedded = {
  'ecdsa': cmsEcdsaJson,
  'rsa': cmsRsaJson,
  'certs': cmsCertsJson,
  'signatures': cmsSignaturesJson,
  'algorithms': cmsAlgorithmsJson,
  'tokens': cmsTokensJson,
  'mutations': cmsMutationsJson,
  'corpus': cmsCorpusJson,
};

void main() {
  final files = {
    for (final n in cmsFiles)
      n: jsonDecode(
        File('test/vectors/cms_$n.json').readAsStringSync(),
      ) as Json,
  };

  test('every file is of the draft v0.12 and of its generator', () {
    for (final f in files.values) {
      expect(f['spec'], '0.12 draft');
      expect(f['generator'], startsWith('tool/cms_go_vectors_test.go, go'));
      expect(f['source'], startsWith('datekeys-go c531e93'));
    }
  });

  group('cms_vectors.g.dart', () {
    for (final n in cmsFiles) {
      test('holds the part of cms_$n.json of its steps', () {
        final full = files[n]!;
        final part = jsonDecode(_embedded[n]!) as Json;
        final every = part['every']! as Json;
        expect(part.keys.toSet(), {...full.keys, 'every'});
        for (final MapEntry(:key, :value) in full.entries) {
          final step = every[key] as int?;
          if (step == null) {
            expect(part[key], value, reason: key);
            continue;
          }
          expect(part[key], [
            for (final (i, c) in (value! as List).indexed)
              if (step != 0 && i % step == 0) c,
          ], reason: key);
        }
      });
    }
  });

  group('ECDSA', () => ecdsaTests(files['ecdsa']!));
  group('RSA', () => rsaTests(files['rsa']!));
}