/*******************************************************************************
* Copyright 2015 Analog Devices, Inc.
*
* 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.analog.lyric.collect.tests;
import static org.junit.Assert.*;
import org.junit.Test;
import com.analog.lyric.collect.CombinatoricIterator;
/**
*
* @since 0.08
* @author Christopher Barber
*/
public class TestCombinatoricIterator
{
@Test
public void test()
{
String[] first = new String[] { "a", "b" };
String[] second = new String[] { "x", "y", "z" };
CombinatoricIterator<String> iter = new CombinatoricIterator<>(String.class, first, second);
assertTrue(iter.hasNext());
String[] values = iter.next();
assertArrayEquals(new String[] { "a", "x" }, values);
String[] values2 = iter.next();
assertArrayEquals(new String[] { "b", "x" }, values);
assertSame(values, values2);
assertArrayEquals(new String[] { "a", "y" }, iter.next());
assertArrayEquals(new String[] { "b", "y" }, iter.next());
assertArrayEquals(new String[] { "a", "z" }, iter.next());
assertArrayEquals(new String[] { "b", "z" }, iter.next());
assertFalse(iter.hasNext());
assertArrayEquals(new String[] { "b", "z" }, iter.next());
iter.reset();
assertTrue(iter.hasNext());
assertArrayEquals(new String[] { "a", "x" }, iter.next());
// Test dimension with only one element
iter = new CombinatoricIterator<>(String.class, new String[] { "one" }, second);
assertTrue(iter.hasNext());
assertArrayEquals(new String[] { "one", "x" }, iter.next());
assertArrayEquals(new String[] { "one", "y" }, iter.next());
assertArrayEquals(new String[] { "one", "z" }, iter.next());
assertFalse(iter.hasNext());
iter = new CombinatoricIterator<>(String.class, first, new String[] { "one" });
assertTrue(iter.hasNext());
assertArrayEquals(new String[] { "a", "one" }, iter.next());
assertArrayEquals(new String[] { "b", "one" }, iter.next());
assertFalse(iter.hasNext());
}
}