Added load average test case for psutil adapter

tests/test_psutil_la.py

@@ -0,0 +1,31 @@
+import unittest
+from unittest.mock import patch
+
+from app.core.adapters.psutil_adapter import PsutilAdapter
+
+
+class TestPsutilAdapter(unittest.TestCase):
+    @patch('app.core.adapters.psutil_adapter.psutil.getloadavg')
+    def test_get_load_average(self, mock_getloadavg):
+        # Test case: Load average is returned correctly
+        mock_getloadavg.return_value = (0.1, 0.2, 0.3)
+        load_average = PsutilAdapter.get_load_average()
+        self.assertEqual(load_average, (0.1, 0.2, 0.3))
+
+    @patch('app.core.adapters.psutil_adapter.psutil.getloadavg')
+    def test_get_load_average_zero_values(self, mock_getloadavg):
+        # Test case: Load average is returned correctly when all values are zero
+        mock_getloadavg.return_value = (0.0, 0.0, 0.0)
+        load_average = PsutilAdapter.get_load_average()
+        self.assertEqual(load_average, (0.0, 0.0, 0.0))
+
+    @patch('app.core.adapters.psutil_adapter.psutil.getloadavg')
+    def test_get_load_average_negative_values(self, mock_getloadavg):
+        # Test case: Load average is returned correctly when all values are negative
+        mock_getloadavg.return_value = (-1.0, -2.0, -3.0)
+        load_average = PsutilAdapter.get_load_average()
+        self.assertEqual(load_average, (-1.0, -2.0, -3.0))
+
+
+if __name__ == '__main__':
+    unittest.main()