85 lines
2.4 KiB
Dart
85 lines
2.4 KiB
Dart
import 'dart:math';
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import 'package:cyberhybridhub_server/question_source_mix.dart';
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import 'package:cyberhybridhub_server/questions_db.dart';
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import 'package:test/test.dart';
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void main() {
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group('QuestionSourceMix.pickNextSourceId', () {
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test('weighted random selection works deterministically with seeded random', () {
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final Map<String, int> mix = <String, int>{
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'market_history': 70,
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'spelling': 30,
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};
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var marketCount = 0;
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var spellingCount = 0;
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final Random random = Random(42);
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for (var i = 0; i < 200; i++) {
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final String pick = QuestionSourceMix.pickNextSourceId(
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effectiveMixPercent: mix,
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deliveredCounts: <String, int>{},
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random: random,
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);
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if (pick == 'market_history') {
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marketCount++;
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} else if (pick == 'spelling') {
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spellingCount++;
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}
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}
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expect(marketCount, greaterThan(120));
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expect(spellingCount, greaterThan(40));
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expect(marketCount + spellingCount, 200);
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});
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test('always picks the only active source', () {
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expect(
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QuestionSourceMix.pickNextSourceId(
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effectiveMixPercent: <String, int>{'spelling': 100},
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deliveredCounts: <String, int>{},
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),
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'spelling',
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);
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});
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});
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group('QuestionSourceMix.orderUnansweredByPreferredSource', () {
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test('puts preferred source first preserving FIFO within source', () {
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final List<Map<String, dynamic>> ordered =
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QuestionSourceMix.orderUnansweredByPreferredSource(
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<Map<String, dynamic>>[
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<String, dynamic>{
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'id': 'm1',
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'sourceTag': 'market_history:prospective',
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'createdAt': '2026-01-01T00:00:00Z',
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},
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<String, dynamic>{
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'id': 's1',
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'sourceTag': 'spelling:word_quiz',
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'pipelineKey': 'spelling',
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'createdAt': '2026-01-02T00:00:00Z',
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},
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<String, dynamic>{
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'id': 'm2',
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'sourceTag': 'market_history:prospective',
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'createdAt': '2026-01-03T00:00:00Z',
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},
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],
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preferredSourceId: 'spelling',
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);
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expect(ordered.map((Map<String, dynamic> r) => r['id']).toList(), <String>[
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's1',
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'm1',
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'm2',
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]);
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expect(
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QuestionsDb.resolveSourceId(ordered.first),
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'spelling',
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);
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});
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});
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}
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