dateKeys-dart/test/testdata_test.dart

// The tests run whatever testdata/ holds, so the shared Go vectors are only as
// good as their integrity: a truncated or edited file must fail here rather
// than pass with fewer cases. The check is the one of tool/sync_testdata.dart:
// every file matches the SHA-256 recorded in testdata/SOURCE.json for the
// pinned datekeys-go commit, with none missing and none extra. And every file
// names the specification that this package implements.
@TestOn('vm')
library;

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

import 'package:datekeys/datekeys.dart';
import 'package:test/test.dart';

import '../tool/sync_testdata.dart' as testdata;

void main() {
  final root = Directory.current;

  test('testdata/ matches SOURCE.json byte for byte, with no missing or extra file', () {
    final r = testdata.check(root);
    expect(r.errors, isEmpty);
    expect(r.module, testdata.module);
    expect(r.commit, matches(RegExp(r'^[0-9a-f]{40}$')));
    expect(r.files, greaterThan(100));
  });

  test('every JSON of testdata/ with a spec field names specVersion', () {
    var named = 0;
    final files = Directory('${root.path}/testdata')
        .listSync(recursive: true)
        .whereType<File>();
    for (final f in files.where(
      (f) => f.path.endsWith('.json') && !f.path.endsWith('SOURCE.json'),
    )) {
      final json = jsonDecode(f.readAsStringSync());
      if (json is Map<String, Object?> && json.containsKey('spec')) {
        expect(json['spec'], specVersion, reason: f.path);
        named++;
      }
    }
    // The vectors and the record of every fixture carry it.
    expect(named, greaterThan(40));
  });
}