test for setting log level

Signed-off-by: Jakub Jelen <jjelen@redhat.com>

Author: Jakuje

tests/unit/session_test.py

@@ -2,10 +2,13 @@
 
 """Tests suite for session."""
 
+import logging
+
 import pytest
 
 from pylibsshext.errors import LibsshSessionException
 from pylibsshext.session import Session
+from pylibsshext.logging import ANSIBLE_PYLIBSSH_TRACE
 
 
 def test_make_session():
@@ -19,3 +22,47 @@ def test_session_connection_refused(free_port_num):
     ssh_session = Session()
     with pytest.raises(LibsshSessionException, match=error_msg):
         ssh_session.connect(host='127.0.0.1', port=free_port_num)
+
+
+def test_session_log_level_debug(caplog, free_port_num):
+    """Test setting the log level to DEBUG should reveal copyright information."""
+    ssh_session = Session()
+    ssh_session.set_log_level(logging.DEBUG)
+
+    # the connection will fail but first log lands before that
+    with pytest.raises(LibsshSessionException):
+        ssh_session.connect(host='127.0.0.1', port=free_port_num)
+
+    found_copyright = False
+    for record in caplog.records:
+        if record.levelname == 'DEBUG' and 'and libssh contributors.' in record.msg:
+            found_copyright = True
+    assert found_copyright
+
+
+def test_session_log_level_no_log(caplog, free_port_num):
+    """Test setting the log level to NONE should be quiet."""
+    ssh_session = Session()
+    ssh_session.set_log_level(logging.NOTSET)
+
+    # the connection will fail but first log lands before that
+    with pytest.raises(LibsshSessionException):
+        ssh_session.connect(host='127.0.0.1', port=free_port_num)
+
+    assert len(caplog.records) == 0
+
+
+def test_session_log_level_trace(caplog, free_port_num):
+    """Test setting the log level to TRACE should provide even more logs."""
+    ssh_session = Session()
+    ssh_session.set_log_level(ANSIBLE_PYLIBSSH_TRACE)
+
+    # the connection will fail but first log lands before that
+    with pytest.raises(LibsshSessionException):
+        ssh_session.connect(host='127.0.0.1', port=free_port_num)
+
+    found_trace = False
+    for record in caplog.records:
+        if record.levelname == 'TRACE' and 'socket_callback_connected: Connection refused' in record.msg:
+            found_trace = True
+    assert found_trace