summaryrefslogtreecommitdiff
path: root/test/list_ext_test.dart
blob: cb6e68c0cab69b14a6af592723b598763e86fe43 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
import 'package:flutter_test/flutter_test.dart';
import 'package:uvok_epaper_badge/extensions/list_ext.dart';

void main() {
  group('ListExt.addOrReplaceWhere', () {
    test('adds element when predicate returns false for all', () {
      final list = [1, 2, 3];
      list.addOrReplaceWhere(4, (x) => x == 5);
      expect(list, equals([1, 2, 3, 4]));
    });

    test('replaces element when predicate matches and no replaceCondition', () {
      final list = [1, 2, 3];
      list.addOrReplaceWhere(99, (x) => x == 2);
      expect(list, equals([1, 99, 3]));
    });

    test('does not replace if replaceCondition returns false', () {
      final list = [1, 2, 3];
      list.addOrReplaceWhere(99, (x) => x == 2, replaceCondition: (x) => false);
      expect(list, equals([1, 2, 3]));
    });

    test('replaces if replaceCondition returns true', () {
      final list = [1, 2, 3];
      list.addOrReplaceWhere(99, (x) => x == 2, replaceCondition: (x) => true);
      expect(list, equals([1, 99, 3]));
    });

    test('only replaces the first matching element', () {
      final list = [2, 2, 3];
      list.addOrReplaceWhere(99, (x) => x == 2);
      expect(list, equals([99, 2, 3]));
    });
  });
}