ListItemReaderTests.java example

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spring-batch-master
/*
 * Copyright 2006-2007 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.batch.item.support;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.springframework.batch.item.support.ListItemReader;

import junit.framework.TestCase;

public class ListItemReaderTests extends TestCase {

	ListItemReader<String> reader = new ListItemReader<String>(Arrays.asList(new String[] { "a", "b", "c" }));

	public void testNext() throws Exception {
		assertEquals("a", reader.read());
		assertEquals("b", reader.read());
		assertEquals("c", reader.read());
		assertEquals(null, reader.read());
	}

	public void testChangeList() throws Exception {
		List<String> list = new ArrayList<String>(Arrays.asList(new String[] { "a", "b", "c" }));
		reader = new ListItemReader<String>(list);
		assertEquals("a", reader.read());
		list.clear();
		assertEquals(0, list.size());
		assertEquals("b", reader.read());
	}
}