/*
* Copyright 2002-2013 the original author or authors.
*
* 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 org.springframework.beans.propertyeditors;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.junit.Test;
import static org.junit.Assert.*;
/**
* Unit tests for the {@link CustomCollectionEditor} class.
*
* @author Rick Evans
* @author Chris Beams
*/
public class CustomCollectionEditorTests {
@Test(expected = IllegalArgumentException.class)
public void testCtorWithNullCollectionType() throws Exception {
new CustomCollectionEditor(null);
}
@Test(expected = IllegalArgumentException.class)
@SuppressWarnings("unchecked")
public void testCtorWithNonCollectionType() throws Exception {
new CustomCollectionEditor((Class) String.class);
}
@Test(expected = IllegalArgumentException.class)
public void testWithCollectionTypeThatDoesNotExposeAPublicNoArgCtor() throws Exception {
CustomCollectionEditor editor = new CustomCollectionEditor(CollectionTypeWithNoNoArgCtor.class);
editor.setValue("1");
}
@Test
public void testSunnyDaySetValue() throws Exception {
CustomCollectionEditor editor = new CustomCollectionEditor(ArrayList.class);
editor.setValue(new int[] {0, 1, 2});
Object value = editor.getValue();
assertNotNull(value);
assertTrue(value instanceof ArrayList);
List<?> list = (List<?>) value;
assertEquals("There must be 3 elements in the converted collection", 3, list.size());
assertEquals(new Integer(0), list.get(0));
assertEquals(new Integer(1), list.get(1));
assertEquals(new Integer(2), list.get(2));
}
@Test
public void testWhenTargetTypeIsExactlyTheCollectionInterfaceUsesFallbackCollectionType() throws Exception {
CustomCollectionEditor editor = new CustomCollectionEditor(Collection.class);
editor.setValue("0, 1, 2");
Collection<?> value = (Collection<?>) editor.getValue();
assertNotNull(value);
assertEquals("There must be 1 element in the converted collection", 1, value.size());
assertEquals("0, 1, 2", value.iterator().next());
}
@Test
public void testSunnyDaySetAsTextYieldsSingleValue() throws Exception {
CustomCollectionEditor editor = new CustomCollectionEditor(ArrayList.class);
editor.setValue("0, 1, 2");
Object value = editor.getValue();
assertNotNull(value);
assertTrue(value instanceof ArrayList);
List<?> list = (List<?>) value;
assertEquals("There must be 1 element in the converted collection", 1, list.size());
assertEquals("0, 1, 2", list.get(0));
}
@SuppressWarnings({ "serial", "unused" })
private static final class CollectionTypeWithNoNoArgCtor extends ArrayList<Object> {
public CollectionTypeWithNoNoArgCtor(String anArg) {
}
}
}