diff --git a/tests/conftest.py b/tests/conftest.py
index f8aa360..5cfb114 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -87,3 +87,9 @@ def tmpfile(tmpdir):
 def item():
     from beeref.items import BeePixmapItem
     yield BeePixmapItem(QtGui.QImage())
+
+
+@pytest.fixture(scope="session")
+def qapp():
+    from beeref.__main__ import BeeRefApplication
+    yield BeeRefApplication([])
diff --git a/tests/test_main.py b/tests/test_main.py
index d88c3d4..e40f5c3 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -1,4 +1,4 @@
-from unittest.mock import patch
+from unittest.mock import patch, MagicMock
 
 from PyQt6 import QtCore
 
@@ -18,7 +18,16 @@ def test_beeref_mainwindow_init(show_mock, qapp):
     show_mock.assert_called()
 
 
-@patch('PyQt6.QtWidgets.QApplication')
+@patch('beeref.view.BeeGraphicsView.open_from_file')
+def test_beerefapplication_fileopenevent(open_mock, qapp, main_window):
+    event = MagicMock()
+    event.type.return_value = QtCore.QEvent.Type.FileOpen
+    event.file.return_value = 'test.bee'
+    assert qapp.event(event) is True
+    open_mock.assert_called_once_with('test.bee')
+
+
+@patch('beeref.__main__.BeeRefApplication')
 @patch('beeref.__main__.CommandlineArgs')
 def test_main(args_mock, app_mock, qapp):
     app_mock.return_value = qapp