Add test for QtToolTipEventFilter (#6066)

# Description Adds a test for the `QtToolTipEventFilter` as a continuation of the effort started at #5864 to increase Qt widgets/code coverage ## Type of change - [x] Tests improvements/additions # How has this been tested? - [x] all tests pass with my change - [x] I check if my changes works with both PySide and PyQt backends as there are small differences between the two Qt bindings. ## Final checklist: - [x] My PR is the minimum possible work for the desired functionality
napari · Aug 1, 2023 · d5be72d · d5be72d
1 parent b37eea4
commit d5be72d
Showing 1 changed file with 41 additions and 0 deletions.
diff --git a/napari/_qt/_tests/test_qt_event_filters.py b/napari/_qt/_tests/test_qt_event_filters.py
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+import pytest
+
+from napari._qt.qt_event_filters import QtToolTipEventFilter
+
+pytest.importorskip('qtpy', reason='Cannot test event filters without qtpy.')
+
+
+@pytest.mark.parametrize(
+    "tooltip,is_qt_tag_present",
+    [
+        (
+            "<html>"
+            "<p>A widget to test that a rich text tooltip might be detected "
+            "and therefore not changed to include a qt tag</p>"
+            "</html>",
+            False,
+        ),
+        (
+            "A widget to test that a non-rich text tooltip might "
+            "be detected and therefore changed",
+            True,
+        ),
+    ],
+)
+def test_qt_tooltip_event_filter(qtbot, tooltip, is_qt_tag_present):
+    """
+    Check that the tooltip event filter only changes tooltips with non-rich text.
+    """
+    from qtpy.QtCore import QEvent
+    from qtpy.QtWidgets import QWidget
+
+    # event filter object and QEvent
+    event_filter_handler = QtToolTipEventFilter()
+    qevent = QEvent(QEvent.ToolTipChange)
+
+    # check if tooltip is changed by the event filter
+    widget = QWidget()
+    qtbot.addWidget(widget)
+    widget.setToolTip(tooltip)
+    event_filter_handler.eventFilter(widget, qevent)
+    assert ("<qt>" in widget.toolTip()) == is_qt_tag_present