test: add comprehensive tests for retail stock transfer functionality, including permission checks, quantity validation, and stock updates

tests/Feature/Admin/Manage/StockTest.php

@@ -195,3 +195,122 @@ function createCompletedCuttingSetup(): array
         ]);
     });
 });
+
+// ─── Retail Stock Transfer ──────────────────────────────────
+
+describe('Retail Stock Transfer', function () {
+    test('user with permission can transfer stock from good to retail', function () {
+        $user = createStockUserWithPermission(PermissionEnum::STOCKS_VIEW);
+
+        $product = Product::factory()->create();
+        $variant = ProductVariant::factory()->create([
+            'product_id' => $product->id,
+            'stock' => 10,
+            'retail_stock' => 5,
+        ]);
+
+        $this->actingAs($user)
+            ->postJson(route('admin.manage.retail-stock.transfer'), [
+                'product_variant_id' => $variant->id,
+                'quantity' => 3,
+                'notes' => 'Transfer test',
+            ])
+            ->assertOk();
+
+        $variant->refresh();
+
+        $this->assertEquals(7, $variant->stock);
+        $this->assertEquals(8, $variant->retail_stock);
+
+        $this->assertDatabaseHas('retail_stock_histories', [
+            'product_variant_id' => $variant->id,
+            'user_id' => $user->id,
+            'quantity' => 3,
+            'stock_before' => 10,
+            'retail_stock_before' => 5,
+            'stock_after' => 7,
+            'retail_stock_after' => 8,
+            'notes' => 'Transfer test',
+        ]);
+    });
+
+    test('retail stock transfer does not require owner verification', function () {
+        $user = createStockUserWithPermission(PermissionEnum::STOCKS_VIEW);
+
+        $product = Product::factory()->create();
+        $variant = ProductVariant::factory()->create([
+            'product_id' => $product->id,
+            'stock' => 10,
+            'retail_stock' => 5,
+        ]);
+
+        $this->actingAs($user)
+            ->postJson(route('admin.manage.retail-stock.transfer'), [
+                'product_variant_id' => $variant->id,
+                'quantity' => 3,
+            ])
+            ->assertOk();
+
+        $this->assertDatabaseCount('owner_verification_requests', 0);
+
+        $variant->refresh();
+        $this->assertEquals(7, $variant->stock);
+        $this->assertEquals(8, $variant->retail_stock);
+    });
+
+    test('retail stock transfer fails when quantity exceeds stock', function () {
+        $user = createStockUserWithPermission(PermissionEnum::STOCKS_VIEW);
+
+        $product = Product::factory()->create();
+        $variant = ProductVariant::factory()->create([
+            'product_id' => $product->id,
+            'stock' => 5,
+            'retail_stock' => 0,
+        ]);
+
+        $this->actingAs($user)
+            ->postJson(route('admin.manage.retail-stock.transfer'), [
+                'product_variant_id' => $variant->id,
+                'quantity' => 10,
+            ])
+            ->assertUnprocessable()
+            ->assertJsonValidationErrors('quantity');
+    });
+
+    test('retail stock transfer fails when quantity is zero', function () {
+        $user = createStockUserWithPermission(PermissionEnum::STOCKS_VIEW);
+
+        $product = Product::factory()->create();
+        $variant = ProductVariant::factory()->create([
+            'product_id' => $product->id,
+            'stock' => 10,
+            'retail_stock' => 5,
+        ]);
+
+        $this->actingAs($user)
+            ->postJson(route('admin.manage.retail-stock.transfer'), [
+                'product_variant_id' => $variant->id,
+                'quantity' => 0,
+            ])
+            ->assertUnprocessable()
+            ->assertJsonValidationErrors('quantity');
+    });
+
+    test('user without permission cannot transfer stock', function () {
+        $user = User::factory()->create();
+
+        $product = Product::factory()->create();
+        $variant = ProductVariant::factory()->create([
+            'product_id' => $product->id,
+            'stock' => 10,
+            'retail_stock' => 5,
+        ]);
+
+        $this->actingAs($user)
+            ->postJson(route('admin.manage.retail-stock.transfer'), [
+                'product_variant_id' => $variant->id,
+                'quantity' => 3,
+            ])
+            ->assertForbidden();
+    });
+});