ImageAltText
open /run/com.vaadin.tests.components.image.ImageAltText?restartApplication
assertAttribute vaadin=runcomvaadintestscomponentsimageImageAltText::/VVerticalLayout[0]/VVerticalLayout[0]/VImage[0]@alt Original alt text
click vaadin=runcomvaadintestscomponentsimageImageAltText::/VVerticalLayout[0]/VVerticalLayout[0]/VButton[0]/domChild[0]
assertAttribute vaadin=runcomvaadintestscomponentsimageImageAltText::/VVerticalLayout[0]/VVerticalLayout[0]/VImage[0]@alt New alt text!
screenCapture image_alt_text