tests: rename user

This is the transformation to Python of the test located in
`tests/usertools/01/10_usermod_rename_user.test`, which checks that
`usermod` is able to rename a user. The test checks that the new user,
the group and home folder exists.

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

tests/system/tests/test_usermod.py

@@ -0,0 +1,43 @@
+"""
+Test usermod
+"""
+
+from __future__ import annotations
+
+import pytest
+
+from framework.roles.shadow import Shadow
+from framework.topology import KnownTopology
+
+
+@pytest.mark.topology(KnownTopology.Shadow)
+def test_usermod__rename_user(shadow: Shadow):
+    """
+    :title: Rename user
+    :setup:
+        1. Create user
+        2. Rename user
+    :steps:
+        1. User exists with new name and GID is 1000
+        2. Group exists and GID is 1000
+        3. Home folder exists
+    :expectedresults:
+        1. User is found and UID matches
+        2. Group is found and GID matches
+        3. Home folder is found
+    :customerscenario: False
+    """
+    shadow.useradd("tuser1")
+    shadow.usermod("-l tuser2 tuser1")
+
+    result = shadow.tools.id("tuser2")
+    assert result is not None, "User should be found"
+    assert result.user.name == "tuser2", "Incorrect username"
+    assert result.user.id == 1000, "Incorrect UID"
+
+    result = shadow.tools.getent.group("tuser1")
+    assert result is not None, "Group should be found"
+    assert result.name == "tuser1", "Incorrect groupname"
+    assert result.gid == 1000, "Incorrect GID"
+
+    assert shadow.fs.exists("/home/tuser1"), "Home folder should be found"