diff --git a/modules/test_checklist.py b/modules/test_checklist.py
new file mode 100644
index 0000000..761cbb7
--- /dev/null
+++ b/modules/test_checklist.py
@@ -0,0 +1,78 @@
+# modules/test_checklist.py
+import os
+import sys
+
+# Add the parent directory to sys.path to allow module imports
+parent_path = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
+sys.path.insert(0, parent_path)
+
+import unittest
+from unittest.mock import patch
+from checklist import process_checklist_command, initialize_checklist_database
+import time
+
+class TestProcessChecklistCommand(unittest.TestCase):
+    def setUp(self):
+        # Always start with a fresh DB
+        initialize_checklist_database()
+        # Patch settings for consistent test behavior
+        patcher1 = patch('modules.checklist.reverse_in_out', False)
+        patcher2 = patch('modules.checklist.bbs_ban_list', [])
+        patcher3 = patch('modules.checklist.bbs_admin_list', ['999'])
+        self.mock_reverse = patcher1.start()
+        self.mock_ban = patcher2.start()
+        self.mock_admin = patcher3.start()
+        self.addCleanup(patcher1.stop)
+        self.addCleanup(patcher2.stop)
+        self.addCleanup(patcher3.stop)
+
+    def test_checkin_command(self):
+        result = process_checklist_command(1, "checkin test note", name="TESTUSER", location=["loc"])
+        self.assertIn("Checked✅In: TESTUSER", result)
+
+    def test_checkout_command(self):
+        # First checkin
+        process_checklist_command(1, "checkin test note", name="TESTUSER", location=["loc"])
+        # Then checkout
+        result = process_checklist_command(1, "checkout", name="TESTUSER", location=["loc"])
+        self.assertIn("Checked⌛️Out: TESTUSER", result)
+
+    def test_checkin_with_interval(self):
+        result = process_checklist_command(1, "checkin 15 hiking", name="TESTUSER", location=["loc"])
+        self.assertIn("monitoring every 15min", result)
+
+    def test_checkout_all(self):
+        # Multiple checkins
+        process_checklist_command(1, "checkin note1", name="TESTUSER", location=["loc"])
+        process_checklist_command(1, "checkin note2", name="TESTUSER", location=["loc"])
+        result = process_checklist_command(1, "checkout all", name="TESTUSER", location=["loc"])
+        self.assertIn("Checked out", result)
+        self.assertIn("check-ins for TESTUSER", result)
+
+
+    def test_checklistapprove_nonadmin(self):
+        process_checklist_command(1, "checkin foo", name="FOO", location=["loc"])
+        result = process_checklist_command(2, "checklistapprove 1", name="NOTADMIN", location=["loc"])
+        self.assertNotIn("approved", result)
+
+    def test_checklistdeny_nonadmin(self):
+        process_checklist_command(1, "checkin foo", name="FOO", location=["loc"])
+        result = process_checklist_command(2, "checklistdeny 1", name="NOTADMIN", location=["loc"])
+        self.assertNotIn("denied", result)
+
+    def test_help_command(self):
+        result = process_checklist_command(1, "checklist ?", name="TESTUSER", location=["loc"])
+        self.assertIn("Command: checklist", result)
+
+    def test_checklist_listing(self):
+        process_checklist_command(1, "checkin foo", name="FOO", location=["loc"])
+        result = process_checklist_command(1, "checklist", name="FOO", location=["loc"])
+        self.assertIsInstance(result, str)
+        self.assertIn("checked-In", result)
+
+    def test_invalid_command(self):
+        result = process_checklist_command(1, "foobar", name="FOO", location=["loc"])
+        self.assertEqual(result, "Invalid command.")
+
+if __name__ == "__main__":
+    unittest.main()
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