From f3cc98212211e857600ffc2fe792d10ac05d5ef8 Mon Sep 17 00:00:00 2001 From: Sam Cunliffe Date: Fri, 2 Jun 2023 15:41:25 +0100 Subject: [PATCH] A simple test of _update_buttons_checked. A (slightly) dumb pixel-by-pixel test that the checked and unchecked icons are different. --- src/napari_matplotlib/tests/test_ui.py | 49 ++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 src/napari_matplotlib/tests/test_ui.py diff --git a/src/napari_matplotlib/tests/test_ui.py b/src/napari_matplotlib/tests/test_ui.py new file mode 100644 index 00000000..3b30ad3a --- /dev/null +++ b/src/napari_matplotlib/tests/test_ui.py @@ -0,0 +1,49 @@ +import pytest +from qtpy.QtCore import QSize +from qtpy.QtGui import QImage + +from napari_matplotlib import HistogramWidget, ScatterWidget, SliceWidget + + +def _are_different(a: QImage, b: QImage) -> bool: + """ + Check that a and b are identical, pixel by pixel. Via a stupid nested for loop. + """ + assert not a.isNull() + assert not b.isNull() + assert a.size() == b.size() + for x in range(a.width()): + for y in range(a.height()): + if a.pixel(x, y) != b.pixel(x, y): + return True # exit quickly + return False + + +@pytest.mark.parametrize( + "Widget", [HistogramWidget, ScatterWidget, SliceWidget] +) +def test_mpl_toolbar_buttons_checked(make_napari_viewer, Widget): + """Test that the icons for checkable actions change when when a tool is selected. + + A simple test of NapariNavigationToolbar._update_buttons_checked. Make sure the + checked and unchecked icons are not the same. + """ + checkable_actions = ["Zoom", "Pan"] + + viewer = make_napari_viewer() + widget = Widget(viewer) + + # search through all of the icons for the ones whose icons are expected to + # change when checked + for action in widget.toolbar.actions(): + if action.text() in checkable_actions: + assert action.isChecked() is False + assert action.isCheckable() is True + unchecked = action.icon().pixmap(QSize(48, 48)).toImage() + + # simulate the user click (QTest.mouseClick can't take a QAction) + action.trigger() + + assert action.isChecked() is True + checked = action.icon().pixmap(QSize(48, 48)).toImage() + assert _are_different(unchecked, checked) pFad - Phonifier reborn

Pfad - The Proxy pFad of © 2024 Garber Painting. All rights reserved.

Note: This service is not intended for secure transactions such as banking, social media, email, or purchasing. Use at your own risk. We assume no liability whatsoever for broken pages.

Alternative Proxies:

Alternative Proxy

pFad Proxy

pFad v3 Proxy

pFad v4 Proxy