feat: Add unit test for pytest command in sweep.ya

backend/tests/test_sweep.py

@@ -0,0 +1,17 @@
+import subprocess
+import unittest
+
+
+class TestSweep(unittest.TestCase):
+    def test_pytest_command(self):
+        result = subprocess.run(["pytest"], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+
+        self.assertEqual(result.returncode, 0)
+        self.assertIn("collected", result.stdout.decode())
+        self.assertIn("passed", result.stdout.decode())
+        self.assertNotIn("ERROR", result.stdout.decode())
+        self.assertNotIn("FAILED", result.stdout.decode())
+
+
+if __name__ == "__main__":
+    unittest.main()