Add tests

BusinessLayer.Tests/Services/ReviewServiceTests.cs

@@ -97,6 +97,19 @@ namespace BusinessLayer.Tests.Services
             Assert.False(result);
         }
 
+        [Fact]
+        public async Task DeleteReviewByIdAsync_DeletedReview_ReturnsFalse()
+        {
+            // Arrange
+            var reviewId = FakeSeedingValues.DeletedReviewId;
+
+            // Act
+            var result = await _service.DeleteReviewByIdAsync(reviewId);
+
+            // Assert
+            Assert.False(result);
+        }
+
         [Fact]
         public async Task GetReviewAsync_ReviewExists_Succeeds()
         {
@@ -129,6 +142,19 @@ namespace BusinessLayer.Tests.Services
             Assert.All(result, r => Assert.Equal(FakeSeedingValues.Restaurant1Id, r.RestaurantId));
         }
 
+        [Fact]
+        public async Task GetReviewAsync_DeletedReview_ReturnsNull()
+        {
+            // Arrange
+            var reviewId = FakeSeedingValues.DeletedReviewId;
+
+            // Act
+            var result = await _service.GetReviewAsync(reviewId);
+
+            // Assert
+            Assert.Null(result);
+        }
+
         [Fact]
         public async Task UpdateReviewAsync_ReviewExists_Succeeds()
         {
@@ -165,5 +191,23 @@ namespace BusinessLayer.Tests.Services
             // Assert
             Assert.Null(result);
         }
+
+        [Fact]
+        public async Task UpdateReviewAsync_DeletedReview_ReturnsNull()
+        {
+            // Arrange
+            var reviewId = FakeSeedingValues.DeletedReviewId;
+            var updateData = new ReviewUpdateDTO
+            {
+                Content = "Updated content for a deleted review"
+            };
+
+            // Act
+            var result = await _service.UpdateReviewAsync(reviewId, updateData);
+
+            // Assert
+            Assert.Null(result);
+        }
+
     }
 }