Tests: Usermod rename user, change password, lock password

tests/system/requirements.txt

@@ -1,5 +1,6 @@
 flaky
 jc
+passlib
 pytest
 git+https://github.com/next-actions/pytest-mh@1.0.21
 git+https://github.com/next-actions/pytest-ticket

tests/system/tests/test_usermod.py

@@ -5,6 +5,7 @@
 from __future__ import annotations
 
 import pytest
+from passlib.hash import sha512_crypt
 from pytest_mh.conn import ProcessError
 
 from framework.roles.shadow import Shadow
@@ -171,3 +172,63 @@ def test_usermod__set_expire_date_with_empty_date(shadow: Shadow, expiration_dat
     assert result is not None, "User should be found"
     assert result.name == "tuser1", "Incorrect username"
     assert result.expiration_date is None, "Expiration date should be empty"
+
+
+@pytest.mark.topology(KnownTopology.Shadow)
+def test_usermod__rename_user_in_group(shadow: Shadow):
+    """
+    :title: Rename user who is member of a group
+    :setup:
+        1. Create group
+        2. Create user with additional group membership
+        3. Rename user
+    :steps:
+        1. Check passwd entry
+        2. Check group entry for user's primary group
+        3. Check group entry for secondary group membership
+    :expectedresults:
+        1. Passwd entry for renamed user exists
+        2. User's primary group still exists with old name
+        3. User is member of group with new name
+    :customerscenario: False
+    """
+    shadow.groupadd("tgroup")
+    shadow.useradd("-G tgroup tuser1")
+    shadow.usermod("-l tuser2 tuser1")
+
+    passwd_entry = shadow.tools.getent.passwd("tuser2")
+    assert passwd_entry is not None, "User should be found"
+    assert passwd_entry.name == "tuser2", "Incorrect username"
+
+    group_entry = shadow.tools.getent.group("tuser1")
+    assert group_entry is not None, "Primary group should still exist"
+    assert group_entry.name == "tuser1", "Primary group should keep old name"
+
+    tgroup_group = shadow.tools.getent.group("tgroup")
+    assert tgroup_group is not None, "tgroup group should exist"
+    assert "tuser2" in tgroup_group.members, "User should be in tgroup group with new name"
+
+
+@pytest.mark.topology(KnownTopology.Shadow)
+def test_usermod__change_password(shadow: Shadow):
+    """
+    :title: Change user password
+    :setup:
+        1. Create user
+        2. Change password using usermod -p
+    :steps:
+        1. Check shadow entry has new password
+    :expectedresults:
+        1. Password is updated in shadow file
+    :customerscenario: False
+    """
+    shadow.useradd("tuser1")
+
+    password = "Secret123"
+    password_hash = sha512_crypt.hash(password)
+    shadow.usermod(f"-p '{password_hash}' tuser1")
+
+    shadow_entry = shadow.tools.getent.shadow("tuser1")
+    assert shadow_entry is not None, "User should be found"
+    assert shadow_entry.password is not None, "Password should not be None"
+    assert shadow_entry.password.startswith("$6$"), "Password should be SHA-512 crypt hash"