diff --git a/LocalServices/Data/CatastrophicPerformancesDatabase.cs b/LocalServices/Data/CatastrophicPerformancesDatabase.cs
index 462417b..70ae20b 100644
--- a/LocalServices/Data/CatastrophicPerformancesDatabase.cs
+++ b/LocalServices/Data/CatastrophicPerformancesDatabase.cs
@@ -9,7 +9,7 @@ namespace LocalServices.Data
     /// Database implementation with catastrophic performances.
     /// This database implementation persists data in json and will save all the data in their files for each mutable requests.
     /// </summary>
-    internal class CatastrophicPerformancesDatabase : IDatabase
+    public class CatastrophicPerformancesDatabase : IDatabase
     {
 
         private static readonly string RECIPES_FILENAME = "recipes_data.xml";
diff --git a/Tests/CatastrophicPreformancesDatabaseTests.cs b/Tests/CatastrophicPreformancesDatabaseTests.cs
new file mode 100644
index 0000000..bbc55cf
--- /dev/null
+++ b/Tests/CatastrophicPreformancesDatabaseTests.cs
@@ -0,0 +1,44 @@
+using LocalServices.Data;
+using Models;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
+namespace Tests
+{
+    public class CatastrophicPreformancesDatabaseTests
+    {
+
+        private static readonly User SAMPLE_USER = new User(new Uri("https://www.referenseo.com/wp-content/uploads/2019/03/image-attractive-960x540.jpg"), "user", Guid.NewGuid());
+        private static readonly Recipe SAMPLE_RECIPE = new RecipeBuilder("foo", SAMPLE_USER).Build();
+
+        [Fact]
+        public void TestInsertRecipe()
+        {
+            var db = new CatastrophicPerformancesDatabase("/tmp");
+            db.InsertUser(SAMPLE_USER);
+            db.InsertRecipe(SAMPLE_RECIPE);
+            Assert.Contains(SAMPLE_RECIPE, db.ListAllRecipes());
+
+        }
+
+        [Fact]
+        public void TestInsertRate()
+        {
+            var db = new CatastrophicPerformancesDatabase("/tmp");
+            var rate = new RecipeRate(true, 4);
+            db.InsertUser(SAMPLE_USER);
+            db.InsertRate(SAMPLE_USER.Id, SAMPLE_RECIPE.Info.Id, rate);
+            Assert.Equal(rate, db.GetRecipeRate(SAMPLE_USER.Id, SAMPLE_RECIPE.Info.Id));
+            Assert.True(db.ListRatesOf(SAMPLE_USER.Id)[SAMPLE_USER.Id] == rate);
+        }
+
+        [Fact]
+        public void TestInsertWeeklyList()
+        {
+            var db = new CatastrophicPerformancesDatabase("/tmp");
+            db.InsertUser(SAMPLE_USER);
+            db.InsertRecipe(SAMPLE_RECIPE);
+            db.InsertInUserList(SAMPLE_USER.Id, SAMPLE_RECIPE.Info.Id, 99);
+            Assert.True(db.GetRecipeListOf(SAMPLE_USER.Id)[SAMPLE_RECIPE.Info.Id] == 99);
+        }
+    }
+}