test(catalog): cover partial variant option resolution

tests/Feature/Catalog/CatalogItemDetailControllerTest.php

@@ -296,6 +296,64 @@ class CatalogItemDetailControllerTest extends TestCase
             ->assertJsonPath('data.attributes.0.show_in_selector', false);
     }
 
+    public function test_it_resolves_available_variant_options_from_partial_selections(): void
+    {
+        $tenant = $this->createTenant('variant-options');
+        $item = $this->createItem($tenant, 'Numbered entry');
+        $sector = Attribute::query()->create([
+            'tenant_codigo' => $tenant->codigo,
+            'codigo' => 'sector',
+            'nombre' => 'Sector',
+            'type' => FieldType::Select,
+        ]);
+        $seat = Attribute::query()->create([
+            'tenant_codigo' => $tenant->codigo,
+            'codigo' => 'seat',
+            'nombre' => 'Seat',
+            'type' => FieldType::Select,
+        ]);
+        $itemSector = $item->itemAttributes()->create([
+            'attribute_id' => $sector->id,
+            'sort_order' => 0,
+        ]);
+        $itemSeat = $item->itemAttributes()->create([
+            'attribute_id' => $seat->id,
+            'sort_order' => 1,
+        ]);
+        $first = $this->createVariant($item, 1, 0);
+        $second = $this->createVariant($item, 1, 0);
+        $third = $this->createVariant($item, 1, 0);
+
+        foreach ([[$first, 'A', '1'], [$second, 'A', '2'], [$third, 'B', '3']] as [$variant, $sectorValue, $seatValue]) {
+            $variant->definitions()->createMany([
+                ['item_attribute_id' => $itemSector->id, 'value' => $sectorValue],
+                ['item_attribute_id' => $itemSeat->id, 'value' => $seatValue],
+            ]);
+        }
+
+        $this->postJson(
+            "/api/tenants/{$tenant->codigo}/catalog-items/{$item->id}/variant-options",
+            [
+                'selected_values' => ['sector' => 'A'],
+                'excluded_variant_ids' => [$second->id],
+            ],
+        )
+            ->assertOk()
+            ->assertJsonPath('data.valid', true)
+            ->assertJsonPath('data.resolved_variant_id', null)
+            ->assertJsonCount(2, 'data.variants')
+            ->assertJsonCount(1, 'data.options.sector')
+            ->assertJsonCount(1, 'data.options.seat')
+            ->assertJsonPath('data.options.seat.0.value', '1');
+
+        $this->postJson(
+            "/api/tenants/{$tenant->codigo}/catalog-items/{$item->id}/variant-options",
+            ['selected_values' => ['sector' => 'A', 'seat' => '1']],
+        )
+            ->assertOk()
+            ->assertJsonPath('data.resolved_variant_id', $first->id);
+    }
+
     private function createItem(
         Tenant $tenant,
         string $name,