unit test for get_even_numbers added

solutions/tests/test_get_even_numbers.py

@@ -0,0 +1,64 @@
+"""
+Unit tests for get_even_numbers function.
+
+@created: 01/11/2025
+@author: Vahab
+"""
+
+import unittest
+
+from solutions.get_even_numbers import get_even_numbers
+
+
+class TestGetEvenNumbers(unittest.TestCase):
+    """
+    Tests for the get_even_numbers function.
+    """
+
+    def test_basic_functionality(self):
+        """
+        Test: Check if the function returns the correct even numbers from a list.
+        """
+        self.assertEqual(get_even_numbers([1, 2, 3, 4, 5, 6]), [2, 4, 6])
+
+    def test_no_even_numbers(self):
+        """
+        Test: Check if the function returns an empty list when no even numbers are present.
+        """
+        self.assertEqual(get_even_numbers([1, 3, 5]), [])
+
+    def test_empty_list(self):
+        """
+        Test: Check if the function handles an empty list correctly.
+        """
+        self.assertEqual(get_even_numbers([]), [])
+
+    def test_negative_numbers(self):
+        """
+        Test: Check if the function correctly identifies even negative numbers.
+        """
+        self.assertEqual(get_even_numbers([-1, -2, -3, -4]), [-2, -4])
+
+    def test_large_numbers(self):
+        """
+        Test: Check if the function handles large numbers correctly.
+        """
+        self.assertEqual(get_even_numbers([10**6, 10**9 + 1]), [10**6])
+
+    def test_invalid_input_not_list(self):
+        """
+        Test: Check if the function raises a TypeError for non-list inputs.
+        """
+        with self.assertRaises(TypeError):
+            get_even_numbers("not a list")
+
+    def test_invalid_input_non_integer_elements(self):
+        """
+        Test: Check if the function raises a TypeError for lists with non-integer elements.
+        """
+        with self.assertRaises(TypeError):
+            get_even_numbers([1, 2, "three", 4])
+
+
+if __name__ == "__main__":
+    unittest.main()