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TestArrayQueue.java
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TestArrayQueue.java
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package com.haibo.yan.algorithm.array;
import org.testng.annotations.Test;
import static org.testng.Assert.assertEquals;
public class TestArrayQueue {
@Test
public void test1() {
ArrayQueue<Integer> queue = new ArrayQueue<>(3);
assertEquals(queue.length(), 0);
queue.pushBack(1);
assertEquals(queue.head().intValue(), 1);
assertEquals(queue.length(), 1);
queue.pushBack(2);
assertEquals(queue.head().intValue(), 1);
assertEquals(queue.length(), 2);
queue.pushBack(3);
assertEquals(queue.head().intValue(), 1);
assertEquals(queue.length(), 3);
assertEquals(queue.popFront().intValue(), 1);
assertEquals(queue.head().intValue(), 2);
assertEquals(queue.length(), 2);
assertEquals(queue.popFront().intValue(), 2);
assertEquals(queue.head().intValue(), 3);
assertEquals(queue.length(), 1);
queue.pushBack(4);
assertEquals(queue.head().intValue(), 3);
assertEquals(queue.length(), 2);
queue.pushBack(5);
assertEquals(queue.head().intValue(), 3);
assertEquals(queue.length(), 3);
}
@Test
public void test2() {
ArrayQueue<Integer> queue = new ArrayQueue<>(1);
assertEquals(queue.length(), 0);
queue.pushBack(1);
assertEquals(queue.length(), 1);
try {
queue.pushBack(2);
} catch (IndexOutOfBoundsException ioe) {
assertEquals(ioe.getMessage(), "Stack is full");
}
assertEquals(queue.head().intValue(), 1);
assertEquals(queue.popFront().intValue(), 1);
assertEquals(queue.length(), 0);
queue.pushBack(2);
assertEquals(queue.head().intValue(), 2);
assertEquals(queue.popFront().intValue(), 2);
}
}