119 lines
3.7 KiB
Java
Executable file
119 lines
3.7 KiB
Java
Executable file
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2015 Ziver Koc
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package zutil.struct;
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import org.junit.Test;
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import java.util.Iterator;
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import java.util.NoSuchElementException;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.fail;
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/**
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* Created by Ziver on 2015-09-22.
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*/
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public class CircularBufferTest {
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@Test
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public void addToEmpty() {
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CircularBuffer<Integer> buff = new CircularBuffer<Integer>(0);
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try {
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buff.add(10);
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fail("IndexOutOfBoundsException was not thrown");
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} catch (IndexOutOfBoundsException e) {}
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}
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@Test
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public void addOneElement() {
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CircularBuffer<Integer> buff = new CircularBuffer<Integer>(1);
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assertEquals(0, buff.size());
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buff.add(10);
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assertEquals(1, buff.size());
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assertEquals((Integer) 10, buff.get(0));
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}
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@Test
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public void addThreeElements() {
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CircularBuffer<Integer> buff = new CircularBuffer<Integer>(10);
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buff.add(10);
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buff.add(11);
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buff.add(12);
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assertEquals(3, buff.size());
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assertEquals((Integer) 12, buff.get(0));
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assertEquals((Integer) 11, buff.get(1));
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assertEquals((Integer) 10, buff.get(2));
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}
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@Test
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public void addOutOfRange() {
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CircularBuffer<Integer> buff = new CircularBuffer<Integer>(2);
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buff.add(10);
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buff.add(11);
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buff.add(12);
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assertEquals(2, buff.size());
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assertEquals((Integer) 12, buff.get(0));
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assertEquals((Integer) 11, buff.get(1));
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try {
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buff.get(2);
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fail("IndexOutOfBoundsException was not thrown");
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} catch (IndexOutOfBoundsException e) {}
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}
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@Test
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public void iteratorEmpty() {
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CircularBuffer<Integer> buff = new CircularBuffer<Integer>(10);
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Iterator<Integer> it = buff.iterator();
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assert (!it.hasNext());
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try {
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it.next();
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fail("NoSuchElementException was not thrown");
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} catch (NoSuchElementException e) {}
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}
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@Test
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public void iteratorThreeElements() {
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CircularBuffer<Integer> buff = new CircularBuffer<Integer>(10);
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buff.add(10);
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buff.add(11);
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buff.add(12);
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Iterator<Integer> it = buff.iterator();
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assert (it.hasNext());
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assertEquals((Integer) 12, it.next());
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assert (it.hasNext());
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assertEquals((Integer) 11, it.next());
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assert (it.hasNext());
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assertEquals((Integer) 10, it.next());
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assert (!it.hasNext());
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try {
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it.next();
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fail("NoSuchElementException was not thrown");
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} catch (NoSuchElementException e) {}
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}
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}
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