diff --git a/backend/cinemateketTests/ValidatorTests/QueryParameterValidatorsTests.cs b/backend/cinemateketTests/ValidatorTests/QueryParameterValidatorsTests.cs
index 4a11fca..17e291a 100644
--- a/backend/cinemateketTests/ValidatorTests/QueryParameterValidatorsTests.cs
+++ b/backend/cinemateketTests/ValidatorTests/QueryParameterValidatorsTests.cs
@@ -5,14 +5,66 @@ using backend;
 public class QueryParameterValidatorsTests
 {
     [Theory]
-    [InlineData("Star Wars", true)]
-    [InlineData("", false)]
-    [InlineData(null, false)]
-    public void IsValidS_ShouldReturnExpectedResult(string input, bool expectedResult)
-    {
-        bool result = QueryParameterValidators.IsValidS(input);
-        Assert.Equal(expectedResult, result);
-    }
+        [InlineData("Star Wars", true)]
+        [InlineData("", false)]
+        [InlineData(null, false)]
+        public void IsValidS_ShouldReturnExpectedResult(string input, bool expectedResult)
+        {
+            bool result = QueryParameterValidators.IsValidS(input);
+            Assert.Equal(expectedResult, result);
+        }
 
-    // Add more tests for other validators
+        [Theory]
+        [InlineData("movie", true)]
+        [InlineData("series", true)]
+        [InlineData("episode", true)]
+        [InlineData("unknown", false)]
+        [InlineData(null, true)]
+        public void IsValidType_ShouldReturnExpectedResult(string input, bool expectedResult)
+        {
+            bool result = QueryParameterValidators.IsValidType(input);
+            Assert.Equal(expectedResult, result);
+        }
+
+        [Theory]
+        [InlineData("2021", true)]
+        [InlineData("1899", false)]
+        [InlineData(null, true)]
+        public void IsValidYear_ShouldReturnExpectedResult(string input, bool expectedResult)
+        {
+            bool result = QueryParameterValidators.IsValidYear(input);
+            Assert.Equal(expectedResult, result);
+        }
+
+        [Theory]
+        [InlineData("titleasc", true)]
+        [InlineData("titledesc", true)]
+        [InlineData("unknown", false)]
+        [InlineData(null, true)]
+        public void IsValidSort_ShouldReturnExpectedResult(string input, bool expectedResult)
+        {
+            bool result = QueryParameterValidators.IsValidSort(input);
+            Assert.Equal(expectedResult, result);
+        }
+
+        [Theory]
+        [InlineData(1, true)]
+        [InlineData(0, false)]
+        [InlineData(-1, false)]
+        public void IsValidPageNumber_ShouldReturnExpectedResult(int input, bool expectedResult)
+        {
+            bool result = QueryParameterValidators.IsValidPageNumber(input);
+            Assert.Equal(expectedResult, result);
+        }
+
+        [Theory]
+        [InlineData(1, true)]
+        [InlineData(100, true)]
+        [InlineData(0, false)]
+        [InlineData(101, false)]
+        public void IsValidPageSize_ShouldReturnExpectedResult(int input, bool expectedResult)
+        {
+            bool result = QueryParameterValidators.IsValidPageSize(input);
+            Assert.Equal(expectedResult, result);
+        }
 }
\ No newline at end of file