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package com.vaadin.data;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import java.util.concurrent.atomic.AtomicReference;
import org.junit.Before;
import org.junit.Test;
import com.vaadin.data.Binder.BindingBuilder;
import com.vaadin.data.HasValue.ValueChangeEvent;
import com.vaadin.data.converter.StringToIntegerConverter;
import com.vaadin.tests.data.bean.Person;
import com.vaadin.ui.TextField;
/**
* @author Vaadin Ltd
*
*/
public class BinderValueChangeTest
extends BinderTestBase<Binder<Person>, Person> {
private AtomicReference<ValueChangeEvent<?>> event;
private static class TestTextField extends TextField {
@Override
protected boolean setValue(String value, boolean userOriginated) {
return super.setValue(value, userOriginated);
}
}
@Before
public void setUp() {
binder = new Binder<>();
item = new Person();
event = new AtomicReference<>();
}
@Test
public void unboundField_noEvents() {
binder.addValueChangeListener(this::statusChanged);
BindingBuilder<Person, String> binding = binder.forField(nameField);
nameField.setValue("");
assertNull(event.get());
binding.bind(Person::getFirstName, Person::setFirstName);
assertNull(event.get());
}
@Test
public void setBean_unbound_noEvents() {
binder.addValueChangeListener(this::statusChanged);
assertNull(event.get());
binder.setBean(item);
assertNull(event.get());
}
@Test
public void readBean_unbound_noEvents() {
binder.addValueChangeListener(this::statusChanged);
assertNull(event.get());
binder.readBean(item);
assertNull(event.get());
}
@Test
public void setValue_unbound_singleEventOnSetValue() {
binder.forField(nameField).bind(Person::getFirstName,
Person::setFirstName);
binder.forField(ageField)
.withConverter(new StringToIntegerConverter(""))
.bind(Person::getAge, Person::setAge);
binder.addValueChangeListener(this::statusChanged);
assertNull(event.get());
nameField.setValue("foo");
verifyEvent(nameField);
}
@Test
public void setValue_bound_singleEventOnSetValue() {
binder.forField(nameField).bind(Person::getFirstName,
Person::setFirstName);
binder.forField(ageField)
.withConverter(new StringToIntegerConverter(""))
.bind(Person::getAge, Person::setAge);
binder.setBean(item);
binder.addValueChangeListener(this::statusChanged);
assertNull(event.get());
nameField.setValue("foo");
verifyEvent(nameField);
}
@Test
public void userOriginatedUpdate_unbound_singleEventOnSetValue() {
TestTextField field = new TestTextField();
binder.forField(field).bind(Person::getFirstName, Person::setFirstName);
binder.forField(ageField)
.withConverter(new StringToIntegerConverter(""))
.bind(Person::getAge, Person::setAge);
binder.addValueChangeListener(this::statusChanged);
assertNull(event.get());
field.setValue("foo", true);
verifyEvent(field, true);
}
@Test
public void addListenerFirst_bound_singleEventOnSetValue() {
binder.addValueChangeListener(this::statusChanged);
binder.forField(nameField).bind(Person::getFirstName,
Person::setFirstName);
binder.forField(ageField)
.withConverter(new StringToIntegerConverter(""))
.bind(Person::getAge, Person::setAge);
binder.setBean(item);
assertNull(event.get());
ageField.setValue(String.valueOf(1));
verifyEvent(ageField);
}
private void verifyEvent(HasValue<?> field) {
verifyEvent(field, false);
}
private void verifyEvent(HasValue<?> field, boolean isUserOriginated) {
ValueChangeEvent<?> changeEvent = event.get();
assertNotNull(changeEvent);
assertEquals(field, changeEvent.getSource());
assertEquals(field, changeEvent.getComponent());
assertEquals(isUserOriginated, changeEvent.isUserOriginated());
}
private void statusChanged(ValueChangeEvent<?> evt) {
assertNull(event.get());
event.set(evt);
}
}
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