def testDeletePages(self):
"""
Test deleting pages from the collection
"""
p = QgsProject()
l = QgsLayout(p)
collection = l.pageCollection()
# add a page
page = QgsLayoutItemPage(l)
page.setPageSize('A4')
collection.addPage(page)
# add a second page
page2 = QgsLayoutItemPage(l)
page2.setPageSize('A5')
collection.addPage(page2)
page_about_to_be_removed_spy = QSignalSpy(collection.pageAboutToBeRemoved)
# delete page
collection.deletePage(None)
self.assertEqual(collection.pageCount(), 2)
self.assertEqual(len(page_about_to_be_removed_spy), 0)
page3 = QgsLayoutItemPage(l)
# try deleting a page not in collection
collection.deletePage(page3)
QCoreApplication.sendPostedEvents(None, QEvent.DeferredDelete)
self.assertFalse(sip.isdeleted(page3))
self.assertEqual(collection.pageCount(), 2)
self.assertEqual(len(page_about_to_be_removed_spy), 0)
self.assertEqual(l.layoutBounds(ignorePages=False), QRectF(0.0, 0.0, 210.0, 517.0))
collection.deletePage(page)
self.assertEqual(collection.pageCount(), 1)
self.assertEqual(l.layoutBounds(ignorePages=False), QRectF(0.0, 0.0, 148.0, 210.0))
self.assertFalse(page in collection.pages())
QCoreApplication.sendPostedEvents(None, QEvent.DeferredDelete)
self.assertTrue(sip.isdeleted(page))
self.assertEqual(len(page_about_to_be_removed_spy), 1)
self.assertEqual(page_about_to_be_removed_spy[-1][0], 0)
collection.deletePage(page2)
self.assertEqual(collection.pageCount(), 0)
self.assertFalse(collection.pages())
self.assertEqual(l.layoutBounds(ignorePages=False), QRectF())
QCoreApplication.sendPostedEvents(None, QEvent.DeferredDelete)
self.assertTrue(sip.isdeleted(page2))
self.assertEqual(len(page_about_to_be_removed_spy), 2)
self.assertEqual(page_about_to_be_removed_spy[-1][0], 0)
