cofounderella/test/helper_test.dart

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:cofounderella/utils/helper.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  group('getCompoundId', () {
    test('returns correct compound ID for a sorted list', () {
      List<String> ids = ['id3', 'id1', 'id2'];
      String result = getCompoundId(ids);
      expect(result, 'id1_id2_id3');
    });

    test('returns correct compound ID for an already sorted list', () {
      List<String> ids = ['id1', 'id2', 'id3'];
      String result = getCompoundId(ids);
      expect(result, 'id1_id2_id3');
    });

    test('returns correct compound ID for a single element list', () {
      List<String> ids = ['id1'];
      String result = getCompoundId(ids);
      expect(result, 'id1');
    });

    test('returns correct compound ID for empty elements', () {
      List<String> ids = ['id1', '', 'id2', ''];
      String result = getCompoundId(ids);
      expect(result, '__id1_id2');
    });

    test('returns correct compound ID for an empty list', () {
      List<String> ids = [];
      String result = getCompoundId(ids);
      expect(result, '');
    });
  });

  group('formatTimestamp', () {
    test('formatTimestamp returns the expected formatted date for 01.01.1970',
        () {
      Timestamp timestamp = Timestamp.fromDate(DateTime(1970, 1, 1, 23, 59));
      String expectedFormattedDate = 'Thu, 1. Jan. 1970 23:59';
      String formattedDate = formatTimestamp(timestamp);
      expect(formattedDate, expectedFormattedDate);
    });

    test(
        'formatTimestamp returns the expected formatted date for another timestamp',
        () {
      Timestamp timestamp = Timestamp.fromDate(DateTime(2023, 8, 15));
      String expectedFormattedDate = 'Tue, 15. Aug. 2023 00:00';
      String formattedDate = formatTimestamp(timestamp);
      expect(formattedDate, expectedFormattedDate);
    });
  });
}