Examples with StreamResource com.vaadin.flow.server.StreamResource used on opensource projects

Example 26 with StreamResource

use of com.vaadin.flow.server.StreamResource in project flow by vaadin.

the class ElementTest method setResourceAttribute_elementIsAttached_removeAttribute.

@Test
public void setResourceAttribute_elementIsAttached_removeAttribute() throws URISyntaxException, InterruptedException {
    UI ui = createUI();
    UI.setCurrent(ui);
    StreamResource resource = createEmptyResource("resource");
    ui.getElement().setAttribute("foo", resource);
    String uri = ui.getElement().getAttribute("foo");
    Optional<StreamResource> res = ui.getSession().getResourceRegistry().getResource(StreamResource.class, new URI(uri));
    Assert.assertTrue(res.isPresent());
    res = null;
    WeakReference<StreamResource> ref = new WeakReference<>(resource);
    resource = null;
    ui.getElement().removeAttribute("foo");
    TestUtil.isGarbageCollected(ref);
    res = ui.getSession().getResourceRegistry().getResource(StreamResource.class, new URI(uri));
    Assert.assertFalse(res.isPresent());
    Assert.assertFalse(ui.getElement().hasAttribute("foo"));
    Assert.assertNull(ui.getElement().getAttribute("foo"));
}