diff --git a/solutions/tests/test_calculate_square_area.py b/solutions/tests/test_calculate_square_area.py
new file mode 100644
index 000000000..ebfbf5ee7
--- /dev/null
+++ b/solutions/tests/test_calculate_square_area.py
@@ -0,0 +1,59 @@
+# !/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+Test module for square_area function.
+
+Test categories:
+- Standard cases: positive numbers
+- Edge cases: numbers that are positive but less than 1
+- Defensive cases: wrong input types, value that is zero, and less than zero
+
+Created on 07 01 2024
+Author: Kareiman Altayeb
+"""
+
+import unittest
+
+from solutions.calculate_square_area import calculate_square_area
+
+
+class CalculateSquareArea(unittest.TestCase):
+    """Tests the calculate_square_area function"""
+
+    def test_positive_integers(self):
+        """It should return value ^ 2"""
+        self.assertEqual(calculate_square_area(7), 49)
+
+    def test_positive_float(self):
+        """It should return value ^ 2"""
+        self.assertEqual(calculate_square_area(5.5), 30.25)
+
+    def test_bigger_values(self):
+        """It should return the value ^ 2"""
+        self.assertEqual(calculate_square_area(2222), 4937284)
+
+    # Edge cases
+
+    def test_small_values(self):
+        """It should return the value ^ 2"""
+        self.assertEqual(calculate_square_area(0.75), 0.5625)
+
+    # Defensive cases
+
+    def test_string_entry(self):
+        """It should raise AssertionError if entry was text or letters"""
+        with self.assertRaises(AssertionError):
+            calculate_square_area("a")
+
+    def test_value_zero(self):
+        """It should raise AssertionError if entry was zero"""
+        with self.assertRaises(AssertionError):
+            calculate_square_area(0)
+
+    def test_value_negative(self):
+        """It should raise AssertionError if value was less than zero"""
+        with self.assertRaises(AssertionError):
+            calculate_square_area(-3)
+
+    if __name__ == "__main__":
+        unittest.main()