app/Models/Recipe.php: add spell relationship.

tests/Feature/Models/RecipeTest.php

@@ -10,6 +10,7 @@ use App\Models\RecipeCategory;
 use App\Models\Profession;
 use App\Models\CharacterProfession;
 use App\Models\Character;
+use App\Models\Spell;
 use App\Models\Item;
 
 class RecipeTest extends TestCase
@@ -48,6 +49,22 @@ class RecipeTest extends TestCase
         $this->assertEquals($category->id, $recipe->category->id);
     }
 
+    /**
+     * Test spell relationship.
+     *
+     * @return void
+     */
+    public function test_spell_relationship()
+    {
+        $spell = Spell::factory()->create();
+
+        $recipe = Recipe::factory()
+            ->for($spell)
+            ->create();
+
+        $this->assertEquals($spell->id, $recipe->spell->id);
+    }
+
     /**
      * Test craft relationship.
      *