tests/system/tests/test_groupadd.py: add test for groupadd -U with empty string

Test verifies that groupadd -U '' correctly creates group with no
members.

Signed-off-by: Iker Pedrosa <ipedrosa@redhat.com>

diff --git a/tests/system/tests/test_groupadd.py b/tests/system/tests/test_groupadd.py
index a979919de4ede4e69e898d177064adafdb16574b..b46621b6ec19ffb955ffbb0a197b7a2e33bbf11d 100644 (file)
--- a/tests/system/tests/test_groupadd.py
+++ b/tests/system/tests/test_groupadd.py
@@ -36,3 +36,33 @@ def test_groupadd__add_group(shadow: Shadow):
         assert gshadow_entry is not None, "Group should be found"
         assert gshadow_entry.name == "tgroup", "Incorrect groupname"
         assert gshadow_entry.password == "!", "Incorrect password"
+
+
+@pytest.mark.topology(KnownTopology.Shadow)
+def test_groupadd__u_option_empty_string_clears_members(shadow: Shadow):
+    """
+    :title: Test groupadd -U option with empty user list
+    :setup:
+        1. None required
+    :steps:
+        1. Run groupadd with -U option and empty string parameter
+        2. Verify group exists after creation
+        3. Confirm group has no members
+    :expectedresults:
+        1. groupadd -U '' command completes successfully
+        2. Group entry is created and accessible
+        3. Group member list is empty (no users assigned to group)
+    :customerscenario: False
+    """
+    shadow.groupadd("-U '' tgroup")
+
+    group_entry = shadow.tools.getent.group("tgroup")
+    assert group_entry is not None, "Group should be found"
+    assert group_entry.name == "tgroup", "Incorrect groupname"
+    assert not group_entry.members, "Group should have no members"
+
+    if shadow.host.features["gshadow"]:
+        gshadow_entry = shadow.tools.getent.gshadow("tgroup")
+        assert gshadow_entry is not None, "Group should be found"
+        assert gshadow_entry.name == "tgroup", "Incorrect groupname"
+        assert not gshadow_entry.members, "Group should have no members"