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package com.vaadin.ui;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertSame;
import org.easymock.Capture;
import org.easymock.EasyMock;
import org.easymock.EasyMockSupport;
import org.junit.Before;
import org.junit.Test;
import com.vaadin.data.HasValue.ValueChangeEvent;
import com.vaadin.data.HasValue.ValueChangeListener;
import com.vaadin.server.ClientConnector;
public class AbstractFieldTest extends EasyMockSupport {
private final class IdentityTextField extends TextField {
@Override
protected boolean isDifferentValue(String newValue) {
// Checks for identity instead of equality
return newValue != getValue();
}
}
class TextField extends AbstractField<String> {
String value = "";
@Override
public String getValue() {
return value;
}
@Override
protected void doSetValue(String value) {
this.value = value;
}
}
TextField field;
ValueChangeListener<String> l;
Capture<ValueChangeEvent<String>> capture;
@Before
public void setUp() {
field = new TextField();
l = mockListener();
capture = new Capture<>();
}
@Test
public void readOnlyFieldAcceptsValueChangeFromServer() {
field.setReadOnly(true);
field.setValue("foo");
assertEquals("foo", field.getValue());
}
@Test
public void readOnlyFieldIgnoresValueChangeFromClient() {
field.setReadOnly(true);
field.setValue("bar", true);
assertEquals("", field.getValue());
}
@Test
public void valueChangeListenerInvoked() {
l.valueChange(EasyMock.capture(capture));
replayAll();
field.setValue("foo");
field.addValueChangeListener(l);
field.setValue("bar");
assertEventEquals(capture.getValue(), "bar", field, false);
verifyAll();
}
@Test
public void valueChangeListenerInvokedFromClient() {
l.valueChange(EasyMock.capture(capture));
replayAll();
field.setValue("foo");
field.addValueChangeListener(l);
field.setValue("bar", true);
assertEventEquals(capture.getValue(), "bar", field, true);
verifyAll();
}
@Test
public void valueChangeListenerNotInvokedIfValueUnchanged() {
// expect zero invocations of l
replayAll();
field.setValue("foo");
field.addValueChangeListener(l);
field.setValue("foo");
verifyAll();
}
@Test
public void valueChangeListenerNotInvokedAfterRemove() {
// expect zero invocations of l
replayAll();
field.addValueChangeListener(l).remove();
field.setValue("foo");
verifyAll();
}
@SuppressWarnings("unchecked")
private ValueChangeListener<String> mockListener() {
return createStrictMock(ValueChangeListener.class);
}
private void assertEventEquals(ValueChangeEvent<String> e, String value,
ClientConnector source, boolean userOriginated) {
assertEquals("event value", value, e.getValue());
assertSame("event source", source, e.getSource());
assertSame("event source connector", source, e.getSource());
assertEquals("event from user", userOriginated, e.isUserOriginated());
}
@Test
public void identityField_realChange() {
TextField identityField = new IdentityTextField();
identityField.addValueChangeListener(l);
// Expect event to both listeners for actual change
l.valueChange(EasyMock.capture(capture));
replayAll();
identityField.setValue("value");
verifyAll();
}
@Test
public void identityField_onlyIdentityChange() {
TextField identityField = new IdentityTextField();
identityField.setValue("value");
identityField.addValueChangeListener(l);
// Expect event to both listeners for actual change
l.valueChange(EasyMock.capture(capture));
replayAll();
String sameValueDifferentIdentity = new String("value");
identityField.setValue(sameValueDifferentIdentity);
verifyAll();
}
@Test
public void identityField_noChange() {
TextField identityField = new IdentityTextField();
identityField.setValue("value");
identityField.addValueChangeListener(l);
// Expect no event for identical value
replayAll();
identityField.setValue(identityField.getValue());
verifyAll();
}
}
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