diff --git a/tests/test_utils_logign.py b/tests/test_utils_logign.py
new file mode 100644
index 000000000..9a3279f60
--- /dev/null
+++ b/tests/test_utils_logign.py
@@ -0,0 +1,95 @@
+import logging
+import pytest
+import pytest
+import sys
+import os
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+from slic.utils.logign import *
+
+import logzero
+from logzero import logger as log
+
+
+# Setup custom levels for testing
+@pytest.fixture(scope="module", autouse=True)
+def setup_logger():
+    add_log_Level(log, "ENLARGE", logging.INFO + 5, func_name="enlarge")
+    logcfg("DEBUG")
+
+
+@pytest.mark.parametrize("level,msg,should_appear", [
+    ("WARNING", "warn to ignore", False),
+    ("WARNING", "warn to keep", True),
+    ("INFO",    "info message", True),
+    ("ENLARGE", "enlarge to ignore", False),
+    ("ENLARGE", "other enlarge", True),
+])
+def test_ignore_log_msg_filter(capfd, level, msg, should_appear):
+    # Clear captured output before logging
+    capfd.readouterr()
+
+    # Set up filter
+    with ignore_log_msg(log, lvl=level, msg=msg):
+        # Trigger all log levels
+        log.warning("warn to ignore")
+        log.warning("warn to keep")
+        log.info("info message")
+        log.enlarge("enlarge to ignore")
+        log.enlarge("other enlarge")
+
+    # Capture the output
+    out = capfd.readouterr().out + capfd.readouterr().err
+
+    # Check if the message appears
+    if should_appear:
+        assert msg in out, f"Expected '{msg}' to appear in logs"
+    else:
+        assert msg not in out, f"Expected '{msg}' to be filtered from logs"
+
+
+def test_ignore_only_by_level(capfd):
+    capfd.readouterr()
+
+    with ignore_log_msg(log, lvl="WARNING", msg=None):
+        log.warning("should be ignored")
+        log.info("should appear")
+
+    out = capfd.readouterr().err
+    assert "should be ignored" not in out
+    assert "should appear" in out
+
+
+def test_ignore_only_by_msg(capfd):
+    capfd.readouterr()
+
+    with ignore_log_msg(log, lvl=None, msg="skip this"):
+        log.warning("skip this")
+        log.warning("keep this")
+
+    out = capfd.readouterr().err
+    assert "skip this" not in out
+    assert "keep this" in out
+
+
+def test_ignore_nothing_when_all_none(capfd):
+    capfd.readouterr()
+
+    with ignore_log_msg(log, lvl=None, msg=None):
+        log.warning("warning")
+        log.info("info")
+
+    out = capfd.readouterr().err
+    assert "warning" not in out  # because logcfg("DEBUG") sets level > warning by default
+    assert "info" in out
+
+
+def test_filter_removed_after_context(capfd):
+    capfd.readouterr()
+
+    with ignore_log_msg(log, lvl="WARNING", msg="temp msg"):
+        log.warning("temp msg")
+
+    # Now outside context: should appear again
+    log.warning("temp msg")
+    out = capfd.readouterr().err
+    assert "temp msg" in out