overlay: Move and improve tests

Orange/widgets/utils/overlay.py

@@ -17,7 +17,7 @@
     QStyleOptionButton, QStylePainter, QFocusFrame, QWidget, QStyleOption
 )
 from AnyQt.QtGui import QIcon, QPixmap, QPainter
-from AnyQt.QtCore import Qt, QSize, QRect, QPoint, QEvent, QTimer
+from AnyQt.QtCore import Qt, QSize, QRect, QPoint, QEvent
 from AnyQt.QtCore import pyqtSignal as Signal, pyqtSlot as Slot
 
 
@@ -606,51 +606,3 @@ def buttonRole(self, button):
     @proxydoc(MessageWidget.button)
     def button(self, standardButton):
         return self.__msgwidget.button(standardButton)
-
-
-import unittest
-
-
-class TestOverlay(unittest.TestCase):
-    def setUp(self):
-        from AnyQt.QtWidgets import QApplication
-        app = QApplication.instance()
-        if app is None:
-            app = QApplication([])
-        self.app = app
-
-    def _exec(self, timeout):
-        QTimer.singleShot(timeout, self.app.quit)
-        return self.app.exec_()
-
-    def tearDown(self):
-        del self.app
-
-    def test_overlay(self):
-        container = QWidget()
-        overlay = MessageOverlayWidget(parent=container)
-        overlay.setWidget(container)
-        overlay.setIcon(QStyle.SP_MessageBoxInformation)
-        container.show()
-        container.raise_()
-        self._exec(500)
-        self.assertTrue(overlay.isVisible())
-
-        overlay.setText("Hello world! It's so nice here")
-        self._exec(500)
-        button_ok = overlay.addButton(MessageOverlayWidget.Ok)
-        button_close = overlay.addButton(MessageOverlayWidget.Close)
-        button_help = overlay.addButton(MessageOverlayWidget.Help)
-
-        self.assertTrue(all([button_ok, button_close, button_help]))
-        self.assertIs(overlay.button(MessageOverlayWidget.Ok), button_ok)
-        self.assertIs(overlay.button(MessageOverlayWidget.Close), button_close)
-        self.assertIs(overlay.button(MessageOverlayWidget.Help), button_help)
-
-        button = overlay.addButton("Click Me!",
-                                   MessageOverlayWidget.AcceptRole)
-        self.assertIsNot(button, None)
-        self.assertTrue(overlay.buttonRole(button),
-                        MessageOverlayWidget.AcceptRole)
-
-        self._exec(10000)

Orange/widgets/utils/tests/test_overlay.py

@@ -0,0 +1,86 @@
+
+import unittest.mock
+from AnyQt.QtCore import Qt, QEvent
+from AnyQt.QtTest import QTest
+from AnyQt.QtWidgets import QWidget, QHBoxLayout, QStyle, QApplication
+
+from Orange.widgets.tests.base import GuiTest
+from Orange.widgets.utils.overlay import (
+    OverlayWidget, MessageOverlayWidget
+)
+
+class TestOverlay(GuiTest):
+    def test_overlay_message(self):
+        container = QWidget()
+        overlay = MessageOverlayWidget(parent=container)
+        overlay.setWidget(container)
+        overlay.setIcon(QStyle.SP_MessageBoxInformation)
+        container.show()
+        QTest.qWaitForWindowExposed(container)
+
+        self.assertTrue(overlay.isVisible())
+
+        overlay.setText("Hello world! It's so nice here")
+        QApplication.sendPostedEvents(overlay, QEvent.LayoutRequest)
+        self.assertTrue(overlay.geometry().isValid())
+
+        button_ok = overlay.addButton(MessageOverlayWidget.Ok)
+        button_close = overlay.addButton(MessageOverlayWidget.Close)
+        button_help = overlay.addButton(MessageOverlayWidget.Help)
+
+        self.assertTrue(all([button_ok, button_close, button_help]))
+        self.assertIs(overlay.button(MessageOverlayWidget.Ok), button_ok)
+        self.assertIs(overlay.button(MessageOverlayWidget.Close), button_close)
+        self.assertIs(overlay.button(MessageOverlayWidget.Help), button_help)
+
+        button = overlay.addButton("Click Me!",
+                                   MessageOverlayWidget.AcceptRole)
+        self.assertIsNot(button, None)
+        self.assertTrue(overlay.buttonRole(button),
+                        MessageOverlayWidget.AcceptRole)
+
+        mock = unittest.mock.MagicMock()
+        overlay.accepted.connect(mock)
+        QTest.mouseClick(button, Qt.LeftButton)
+        self.assertFalse(overlay.isVisible())
+
+        mock.assert_called_once_with()
+
+    def test_layout(self):
+        container = QWidget()
+        container.setLayout(QHBoxLayout())
+        container1 = QWidget()
+        container.layout().addWidget(container1)
+        container.show()
+        QTest.qWaitForWindowExposed(container)
+        container.resize(600, 600)
+
+        overlay = OverlayWidget(parent=container)
+        overlay.setWidget(container)
+        overlay.resize(20, 20)
+        overlay.show()
+
+        center = overlay.geometry().center()
+        self.assertTrue(290 < center.x() < 310)
+        self.assertTrue(290 < center.y() < 310)
+
+        overlay.setAlignment(Qt.AlignTop | Qt.AlignHCenter)
+        geom = overlay.geometry()
+        self.assertEqual(geom.top(), 0)
+        self.assertTrue(290 < geom.center().x() < 310)
+
+        overlay.setAlignment(Qt.AlignLeft | Qt.AlignVCenter)
+        geom = overlay.geometry()
+        self.assertEqual(geom.left(), 0)
+        self.assertTrue(290 < geom.center().y() < 310)
+
+        overlay.setAlignment(Qt.AlignBottom | Qt.AlignRight)
+        geom = overlay.geometry()
+        self.assertEqual(geom.right(), 600 - 1)
+        self.assertEqual(geom.bottom(), 600 - 1)
+
+        overlay.setWidget(container1)
+        geom = overlay.geometry()
+
+        self.assertEqual(geom.right(), container1.geometry().right())
+        self.assertEqual(geom.bottom(), container1.geometry().bottom())