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- /*
- * Copyright 2000-2014 Vaadin Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
- package com.vaadin.ui;
-
- import static org.junit.Assert.assertEquals;
- import static org.junit.Assert.assertFalse;
- import static org.junit.Assert.assertNull;
- import static org.junit.Assert.assertSame;
- import static org.junit.Assert.assertTrue;
-
- import java.util.ArrayList;
- import java.util.Arrays;
- import java.util.Collection;
- import java.util.List;
- import java.util.Optional;
- import java.util.concurrent.atomic.AtomicReference;
-
- import org.jsoup.nodes.Element;
- import org.junit.Before;
- import org.junit.Test;
- import org.mockito.Mockito;
-
- import com.vaadin.data.HasDataProvider;
- import com.vaadin.data.HasValue.ValueChangeEvent;
- import com.vaadin.data.provider.DataProvider;
- import com.vaadin.data.provider.bov.Person;
- import com.vaadin.event.selection.SingleSelectionEvent;
- import com.vaadin.event.selection.SingleSelectionListener;
- import com.vaadin.shared.Registration;
- import com.vaadin.shared.data.DataCommunicatorClientRpc;
- import com.vaadin.ui.declarative.DesignContext;
-
- /**
- * Test for {@link AbstractSingleSelect} and {@link AbstractSingleSelection}
- *
- * @author Vaadin Ltd
- */
- public class AbstractSingleSelectTest {
-
- private List<Person> selectionChanges;
- private List<Person> oldSelections;
-
- private static class PersonListing extends AbstractSingleSelect<Person>
- implements HasDataProvider<Person> {
-
- @Override
- protected Element writeItem(Element design, Person item,
- DesignContext context) {
- return null;
- }
-
- @Override
- protected void readItems(Element design, DesignContext context) {
- }
-
- @Override
- public DataProvider<Person, ?> getDataProvider() {
- return internalGetDataProvider();
- }
-
- @Override
- public void setDataProvider(DataProvider<Person, ?> dataProvider) {
- internalSetDataProvider(dataProvider);
- }
- }
-
- @Before
- public void initListing() {
- listing = new PersonListing();
- listing.setItems(PERSON_A, PERSON_B, PERSON_C);
-
- selectionChanges = new ArrayList<>();
- oldSelections = new ArrayList<>();
- listing.addSelectionListener(e -> selectionChanges.add(e.getValue()));
- listing.addSelectionListener(e -> oldSelections.add(e.getOldValue()));
- }
-
- public static final Person PERSON_C = new Person("c", 3);
- public static final Person PERSON_B = new Person("b", 2);
- public static final Person PERSON_A = new Person("a", 1);
- public static final String RPC_INTERFACE = DataCommunicatorClientRpc.class
- .getName();
- private PersonListing listing;
-
- @Test
- public void select() {
-
- listing.setValue(PERSON_B);
-
- assertTrue(listing.getSelectedItem().isPresent());
-
- assertEquals(PERSON_B, listing.getSelectedItem().orElse(null));
-
- assertFalse(listing.isSelected(PERSON_A));
- assertTrue(listing.isSelected(PERSON_B));
- assertFalse(listing.isSelected(PERSON_C));
-
- assertEquals(Optional.of(PERSON_B), listing.getSelectedItem());
-
- assertEquals(Arrays.asList(PERSON_B), selectionChanges);
- verifyValueChanges();
- }
-
- @Test
- public void selectDeselect() {
-
- listing.setValue(PERSON_B);
- listing.setValue(null);
-
- assertFalse(listing.getSelectedItem().isPresent());
-
- assertFalse(listing.isSelected(PERSON_A));
- assertFalse(listing.isSelected(PERSON_B));
- assertFalse(listing.isSelected(PERSON_C));
-
- assertFalse(listing.getSelectedItem().isPresent());
-
- assertEquals(Arrays.asList(PERSON_B, null), selectionChanges);
- verifyValueChanges();
- }
-
- @Test
- public void reselect() {
-
- listing.setValue(PERSON_B);
- listing.setValue(PERSON_C);
-
- assertEquals(PERSON_C, listing.getSelectedItem().orElse(null));
-
- assertFalse(listing.isSelected(PERSON_A));
- assertFalse(listing.isSelected(PERSON_B));
- assertTrue(listing.isSelected(PERSON_C));
-
- assertEquals(Optional.of(PERSON_C), listing.getSelectedItem());
-
- assertEquals(Arrays.asList(PERSON_B, PERSON_C), selectionChanges);
- verifyValueChanges();
- }
-
- @Test
- public void selectTwice() {
-
- listing.setValue(PERSON_C);
- listing.setValue(PERSON_C);
-
- assertEquals(PERSON_C, listing.getSelectedItem().orElse(null));
-
- assertFalse(listing.isSelected(PERSON_A));
- assertFalse(listing.isSelected(PERSON_B));
- assertTrue(listing.isSelected(PERSON_C));
-
- assertEquals(Optional.of(PERSON_C), listing.getSelectedItem());
-
- assertEquals(Arrays.asList(PERSON_C), selectionChanges);
- verifyValueChanges();
- }
-
- @Test
- public void deselectTwice() {
-
- listing.setValue(PERSON_C);
- listing.setValue(null);
- listing.setValue(null);
-
- assertFalse(listing.getSelectedItem().isPresent());
-
- assertFalse(listing.isSelected(PERSON_A));
- assertFalse(listing.isSelected(PERSON_B));
- assertFalse(listing.isSelected(PERSON_C));
-
- assertFalse(listing.getSelectedItem().isPresent());
-
- assertEquals(Arrays.asList(PERSON_C, null), selectionChanges);
- verifyValueChanges();
- }
-
- @Test
- public void getValue() {
- listing.setSelectedItem(PERSON_B);
-
- assertEquals(PERSON_B, listing.getValue());
-
- listing.setValue(null);
- assertNull(listing.getValue());
- verifyValueChanges();
- }
-
- @Test
- @SuppressWarnings({ "rawtypes" })
- public void getValue_isDelegatedTo_getSelectedItem() {
- AbstractSingleSelect select = Mockito.mock(AbstractSingleSelect.class);
- Optional selected = Optional.of(new Object());
- Mockito.when(select.getSelectedItem()).thenReturn(selected);
- Mockito.doCallRealMethod().when(select).getValue();
-
- assertSame(selected.get(), select.getValue());
-
- selected = Optional.empty();
- Mockito.when(select.getSelectedItem()).thenReturn(selected);
- assertNull(select.getValue());
- }
-
- @Test
- public void setValue() {
- listing.setValue(PERSON_C);
-
- assertEquals(PERSON_C, listing.getSelectedItem().get());
-
- listing.setValue(null);
-
- assertFalse(listing.getSelectedItem().isPresent());
- verifyValueChanges();
- }
-
- @Test
- @SuppressWarnings({ "rawtypes", "unchecked" })
- public void setValue_isDelegatedTo_setSelectedItem() {
- AbstractSingleSelect select = Mockito.mock(AbstractSingleSelect.class);
- Mockito.doCallRealMethod().when(select).setValue(Mockito.any());
-
- Object value = new Object();
- select.setValue(value);
- Mockito.verify(select).setSelectedItem(value);
-
- select.setValue(null);
- Mockito.verify(select).setSelectedItem(null);
- }
-
- @SuppressWarnings("serial")
- @Test
- public void addValueChangeListener() {
- AtomicReference<SingleSelectionListener<String>> selectionListener = new AtomicReference<>();
- Registration registration = Mockito.mock(Registration.class);
- String value = "foo";
- AbstractSingleSelect<String> select = new AbstractSingleSelect<String>() {
- @Override
- public Registration addSelectionListener(
- SingleSelectionListener<String> listener) {
- selectionListener.set(listener);
- return registration;
- }
-
- @Override
- public String getValue() {
- return value;
- }
-
- @Override
- protected Element writeItem(Element design, String item,
- DesignContext context) {
- return null;
- }
-
- @Override
- protected void readItems(Element design, DesignContext context) {
- }
-
- @Override
- public void setItems(Collection<String> items) {
- throw new UnsupportedOperationException(
- "Not needed in this test");
- }
-
- @Override
- public DataProvider<String, ?> getDataProvider() {
- return null;
- }
- };
-
- AtomicReference<ValueChangeEvent<?>> event = new AtomicReference<>();
- Registration actualRegistration = select.addValueChangeListener(evt -> {
- assertNull(event.get());
- event.set(evt);
- });
- assertSame(registration, actualRegistration);
-
- selectionListener.get().selectionChange(
- new SingleSelectionEvent<>(select, value, true));
-
- assertEquals(select, event.get().getComponent());
- assertEquals(value, event.get().getOldValue());
- assertEquals(value, event.get().getValue());
- assertTrue(event.get().isUserOriginated());
- }
-
- private void verifyValueChanges() {
- if (!oldSelections.isEmpty()) {
- assertEquals(null, oldSelections.get(0));
- assertEquals(selectionChanges.size(), oldSelections.size());
- for (int i = 0; i < oldSelections.size() - 1; i++) {
- assertEquals(selectionChanges.get(i), oldSelections.get(i + 1));
- }
- }
- }
- }
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