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package com.vaadin.ui;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import java.util.Iterator;
import java.util.NoSuchElementException;
import org.junit.Test;
public class CustomFieldTest {
public static class TestCustomField extends CustomField<String> {
private String value = "initial";
private Button button;
@Override
public String getValue() {
return value;
}
@Override
protected Component initContent() {
button = new Button("Content");
return button;
}
@Override
protected void doSetValue(String value) {
this.value = value;
}
}
@Test(expected = NoSuchElementException.class)
public void iterator() {
TestCustomField field = new TestCustomField();
// Needs to trigger initContent somehow as
// iterator() can't do it even though it should...
field.getContent();
Iterator<Component> iterator = field.iterator();
assertNotNull(iterator);
assertTrue(iterator.hasNext());
assertEquals(field.button, iterator.next());
assertFalse(iterator.hasNext());
iterator.next();
}
}
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