39 lines
1.3 KiB
Dart
39 lines
1.3 KiB
Dart
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import 'package:flutter_test/flutter_test.dart';
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import 'package:guru_utils/random/pseudo_random.dart'; // 导入PseudoRandom类的路径
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void main() {
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group('PseudoRandom', () {
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test('nextInt generates random integers', () {
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final prng = PseudoRandom(42);
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final numbers = List.generate(5, (_) => prng.nextInt());
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expect(numbers, isNotEmpty);
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expect(numbers, isNot(containsDuplicates(numbers)));
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});
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test('nextBool generates random booleans', () {
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final prng = PseudoRandom(42);
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final bools = List.generate(5, (_) => prng.nextBool());
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expect(bools, isNotEmpty);
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expect(bools, contains(true));
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expect(bools, contains(false));
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});
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test('shuffle shuffles a list', () {
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final prng = PseudoRandom(42);
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final originalList = [1, 2, 3, 4, 5];
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final shuffledList = List.from(originalList);
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prng.shuffle(shuffledList);
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expect(shuffledList, isNotEmpty);
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expect(shuffledList, isNot(equals(originalList)));
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expect(shuffledList.length, equals(originalList.length));
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expect(shuffledList, containsAll(originalList));
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});
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});
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}
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// 辅助函数：检查给定的列表是否包含重复元素
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bool containsDuplicates(List list) {
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return list.length != list.toSet().length;
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}
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