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tests/Unit/Discovery/PersonalizedFeedServiceTest.php

@@ -0,0 +1,76 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Models\Artwork;
+use App\Models\User;
+use App\Models\UserRecommendationCache;
+use App\Services\Recommendations\PersonalizedFeedService;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\DB;
+use Tests\TestCase;
+
+uses(TestCase::class, RefreshDatabase::class);
+
+it('regenerates recommendation cache with items and expiry', function () {
+    $user = User::factory()->create();
+
+    $artworkA = Artwork::factory()->create(['is_public' => true, 'is_approved' => true, 'published_at' => now()->subMinutes(2)]);
+    $artworkB = Artwork::factory()->create(['is_public' => true, 'is_approved' => true, 'published_at' => now()->subMinutes(1)]);
+
+    DB::table('artwork_stats')->insert([
+        ['artwork_id' => $artworkA->id, 'views' => 120, 'downloads' => 30, 'favorites' => 2, 'rating_avg' => 0, 'rating_count' => 0],
+        ['artwork_id' => $artworkB->id, 'views' => 100, 'downloads' => 20, 'favorites' => 1, 'rating_avg' => 0, 'rating_count' => 0],
+    ]);
+
+    app(PersonalizedFeedService::class)->regenerateCacheForUser($user->id, (string) config('discovery.algo_version'));
+
+    $cache = UserRecommendationCache::query()
+        ->where('user_id', $user->id)
+        ->where('algo_version', (string) config('discovery.algo_version'))
+        ->first();
+
+    expect($cache)->not->toBeNull();
+    expect($cache?->generated_at)->not->toBeNull();
+    expect($cache?->expires_at)->not->toBeNull();
+
+    $items = (array) ($cache?->recommendations_json['items'] ?? []);
+    expect(count($items))->toBeGreaterThan(0);
+    expect((int) ($items[0]['artwork_id'] ?? 0))->toBeGreaterThan(0);
+});
+
+it('uses rollout gate g100 to select candidate algo version', function () {
+    $user = User::factory()->create();
+
+    config()->set('discovery.rollout.enabled', true);
+    config()->set('discovery.rollout.baseline_algo_version', 'clip-cosine-v1');
+    config()->set('discovery.rollout.candidate_algo_version', 'clip-cosine-v2');
+    config()->set('discovery.rollout.active_gate', 'g100');
+    config()->set('discovery.rollout.gates.g100.percentage', 100);
+    config()->set('discovery.rollout.force_algo_version', '');
+
+    app(PersonalizedFeedService::class)->regenerateCacheForUser($user->id);
+
+    $cache = UserRecommendationCache::query()->where('user_id', $user->id)->first();
+
+    expect($cache)->not->toBeNull();
+    expect((string) $cache?->algo_version)->toBe('clip-cosine-v2');
+});
+
+it('forces rollback algo version when force toggle is set', function () {
+    $user = User::factory()->create();
+
+    config()->set('discovery.rollout.enabled', true);
+    config()->set('discovery.rollout.baseline_algo_version', 'clip-cosine-v1');
+    config()->set('discovery.rollout.candidate_algo_version', 'clip-cosine-v2');
+    config()->set('discovery.rollout.active_gate', 'g100');
+    config()->set('discovery.rollout.gates.g100.percentage', 100);
+    config()->set('discovery.rollout.force_algo_version', 'clip-cosine-v1');
+
+    app(PersonalizedFeedService::class)->regenerateCacheForUser($user->id);
+
+    $cache = UserRecommendationCache::query()->where('user_id', $user->id)->first();
+
+    expect($cache)->not->toBeNull();
+    expect((string) $cache?->algo_version)->toBe('clip-cosine-v1');
+});