Examples with ValueChangeEvent com.vaadin.flow.component.HasValue.ValueChangeEvent used on opensource projects

Example 6 with ValueChangeEvent

use of com.vaadin.flow.component.HasValue.ValueChangeEvent in project flow-components by vaadin.

the class CheckboxGroupTest method selectDisabledItem_noRedundantEvent.

@Test
public void selectDisabledItem_noRedundantEvent() {
    CheckboxGroup<String> group = new CheckboxGroup<>();
    group.setItems("enabled", "disabled");
    group.setItemEnabledProvider("enabled"::equals);
    List<HasValue.ValueChangeEvent<Set<String>>> events = new ArrayList<>();
    group.addValueChangeListener(events::add);
    List<String> keys = group.getChildren().map(Component::getElement).map(element -> element.getProperty("value")).collect(Collectors.toList());
    String enabledKey = keys.get(0);
    String disabledKey = keys.get(1);
    JsonArray array = Json.createArray();
    array.set(0, disabledKey);
    group.getElement().setPropertyJson("value", array);
    Assert.assertThat(group.getValue(), IsEmptyCollection.empty());
    Assert.assertTrue(events.isEmpty());
    array = Json.createArray();
    array.set(0, enabledKey);
    group.getElement().setPropertyJson("value", array);
    Assert.assertEquals(Collections.singleton("enabled"), group.getValue());
    Assert.assertEquals(1, events.size());
    ValueChangeEvent<Set<String>> event = events.get(0);
    Assert.assertThat(event.getOldValue(), IsEmptyCollection.empty());
    Assert.assertEquals(Collections.singleton("enabled"), event.getValue());
}