[PLA-2033] Add validation rule to listingData (#67)

src/GraphQL/Mutations/CreateListingMutation.php

@@ -141,7 +141,7 @@ public static function getEncodableParams(...$params): array
         $amount = Arr::get($params, 'amount', 0);
         $price = Arr::get($params, 'price', 0);
         $salt = Arr::get($params, 'salt', Str::random(10));
-        $listingType = ListingType::getEnumCase(Arr::get($params, 'listingData.type'));
+        $listingType = is_string($type = Arr::get($params, 'listingData.type')) ? ListingType::getEnumCase($type) : $type;
         $listingData = match ($listingType) {
             ListingType::AUCTION => new ListingDataParams(
                 ListingType::AUCTION,
@@ -210,6 +210,7 @@ protected function rulesCommon(array $args): array
                 new MaxBigInt(),
             ],
             'salt' => ['bail', 'filled', 'max:255'],
+            'listingData' => ['required'],
             'listingData.type' => ['required'],
         ];
     }

tests/Feature/GraphQL/Mutations/CreateListingTest.php

@@ -193,6 +193,23 @@ public function test_it_can_create_listing_with_signing_account(): void
         );
     }
 
+    public function test_it_will_fail_without_listing_data(): void
+    {
+        $data = $this->generateParams();
+        unset($data['listingData']);
+
+        $response = $this->graphql(
+            $this->method,
+            $data,
+            true
+        );
+
+        $this->assertEquals(
+            'Variable "$listingData" of required type "ListingDataInput!" was not provided.',
+            $response['error']
+        );
+    }
+
     public function test_it_will_fail_with_invalid_parameter_make_asset_id(): void
     {
         $data = $this->generateParams();