diff --git a/tests/unit_tests/test_tree_widget.py b/tests/unit_tests/test_tree_widget.py
new file mode 100644
index 00000000..657c3c58
--- /dev/null
+++ b/tests/unit_tests/test_tree_widget.py
@@ -0,0 +1,23 @@
+import pytest
+from PySide6.QtWidgets import QTreeView, QWidget
+
+from bec_widgets.utils.colors import apply_theme
+
+
+class DummyTree(QWidget):
+    def __init__(self):
+        super().__init__()
+        tree = QTreeView(self)
+        apply_theme("dark")
+
+
+@pytest.fixture
+def tree_widget(qtbot):
+    tree = DummyTree()
+    qtbot.addWidget(tree)
+    qtbot.waitExposed(tree)
+    yield tree
+
+
+def test_tree_widget_init(tree_widget):
+    assert isinstance(tree_widget, QWidget)