Examples with SerializablePredicate com.vaadin.flow.function.SerializablePredicate used on opensource projects

Example 1 with SerializablePredicate

use of com.vaadin.flow.function.SerializablePredicate in project flow by vaadin.

the class BinderConverterValidatorTest method binderLoad_withCrossFieldValidation_clearsErrors.

@Test
public void binderLoad_withCrossFieldValidation_clearsErrors() {
    TestTextField lastNameField = new TestTextField();
    final SerializablePredicate<String> lengthPredicate = v -> v.length() > 2;
    BindingBuilder<Person, String> firstNameBinding = binder.forField(nameField).withValidator(lengthPredicate, "length");
    firstNameBinding.bind(Person::getFirstName, Person::setFirstName);
    Binding<Person, String> lastNameBinding = binder.forField(lastNameField).withValidator(v -> !nameField.getValue().isEmpty() || lengthPredicate.test(v), "err").withValidator(lengthPredicate, "length").bind(Person::getLastName, Person::setLastName);
    // this will be triggered as a new bean is bound with binder.bind(),
    // causing a validation error to be visible until reset is done
    nameField.addValueChangeListener(v -> lastNameBinding.validate());
    Person person = new Person();
    binder.setBean(person);
    Assert.assertFalse(componentErrors.containsKey(nameField));
    Assert.assertFalse(componentErrors.containsKey(lastNameField));
    nameField.setValue("x");
    Assert.assertTrue(componentErrors.containsKey(nameField));
    Assert.assertTrue(componentErrors.containsKey(lastNameField));
    binder.setBean(person);
    Assert.assertFalse(componentErrors.containsKey(nameField));
    Assert.assertFalse(componentErrors.containsKey(lastNameField));
}