✅ make sure test work + add a test for RecipeCollection.ResearchByName

MCTG/Tests/Model_UnitTests/RecipeCollection_UT.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using Model;
+
+namespace Model_UnitTests
+{
+    public class RecipeCollection_UT
+    {
+        [Fact]
+        public void TestResearchByName()
+        {
+            RecipeCollection recipes = new RecipeCollection(
+                description: "test recipe",
+                recipes: new[]
+                {
+                    new Recipe(title: "Gateau à la crème", id: 1),
+                    new Recipe(title: "Gateau au chocolat", id: 2),
+                    new Recipe(title: "Gateau aux cerises", id: 3)
+                });
+
+            Assert.Equal(2, recipes.ResearchByName("chocolat").FirstOrDefault().Id);
+        }
+    }
+}