/*
 *  Licensed to GraphHopper GmbH under one or more contributor
 *  license agreements. See the NOTICE file distributed with this work for 
 *  additional information regarding copyright ownership.
 * 
 *  GraphHopper GmbH licenses this file to you 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.graphhopper.util;

import org.junit.Test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

/**
 * @author Peter Karich
 */
public class SimpleIntDequeTest {
    @Test
    public void testSmall() {
        SimpleIntDeque deque = new SimpleIntDeque(8, 2f);
        assertTrue(deque.isEmpty());
        assertEquals(0, deque.getSize());
    }

    @Test
    public void testEmpty() {
        SimpleIntDeque deque = new SimpleIntDeque(1, 2f);
        deque.push(1);
        assertEquals(1, deque.getSize());
        deque.pop();
        assertEquals(0, deque.getSize());
        deque.push(2);
        assertEquals(1, deque.getSize());
    }

    @Test
    public void testPush() {
        SimpleIntDeque deque = new SimpleIntDeque(8, 2f);

        for (int i = 0; i < 60; i++) {
            deque.push(i);
            assertEquals(i + 1, deque.getSize());
        }

        assertEquals(60, deque.getSize());

        assertEquals(0, deque.pop());
        assertEquals(59, deque.getSize());

        assertEquals(1, deque.pop());
        assertEquals(58, deque.getSize());

        deque.push(2);
        assertEquals(59, deque.getSize());
        deque.push(3);
        assertEquals(60, deque.getSize());

        for (int i = 0; i < 50; i++) {
            assertEquals(i + 2, deque.pop());
        }

        assertEquals(10, deque.getSize());
        assertEquals(39, deque.getCapacity());

        deque.push(123);
        assertEquals(11, deque.getSize());

        assertEquals(52, deque.pop());
        assertEquals(10, deque.getSize());
    }
}