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Testing Two-Stack Queue Implementation in JCSprout

This test suite validates the implementation of a queue data structure using two stacks in Java. It demonstrates the core queue operations through a series of append and delete operations while verifying the FIFO behavior.

Test Coverage Overview

The test coverage focuses on validating queue operations implemented using two stacks.

Tests queue insertion with appendTail() method
Validates FIFO behavior through deleteHead() operations
Verifies queue size management
Tests multiple rounds of queue operations

Implementation Analysis

The testing approach uses JUnit to verify the TwoStackQueue implementation. The test demonstrates sequential operations by first adding multiple elements, then removing them all, followed by a second round of operations to ensure consistent behavior.

Uses generic type parameters for flexibility
Implements logging for operation verification
Validates queue state between operations

Technical Details

JUnit testing framework
SLF4J logging implementation
Generic type implementation (String used in test)
Stack-based queue implementation testing

Best Practices Demonstrated

The test demonstrates several testing best practices for data structure implementations.

Clear test method organization
Proper logging for operation tracking
Multiple operation verification
State validation between operations
Comprehensive operation sequence testing

crossoverjie/jcsprout

src/test/java/com/crossoverjie/algorithm/TwoStackQueueTest.java

            
package com.crossoverjie.algorithm;

import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class TwoStackQueueTest {
    private final static Logger LOGGER = LoggerFactory.getLogger(TwoStackQueueTest.class);
    @Test
    public void queue(){
        TwoStackQueue<String> twoStackQueue = new TwoStackQueue<String>() ;
        twoStackQueue.appendTail("1") ;
        twoStackQueue.appendTail("2") ;
        twoStackQueue.appendTail("3") ;
        twoStackQueue.appendTail("4") ;
        twoStackQueue.appendTail("5") ;


        int size = twoStackQueue.getSize();

        for (int i = 0; i< size ; i++){
            LOGGER.info(twoStackQueue.deleteHead());
        }

        LOGGER.info("========第二次添加=========");

        twoStackQueue.appendTail("6") ;

        size = twoStackQueue.getSize();

        for (int i = 0; i< size ; i++){
            LOGGER.info(twoStackQueue.deleteHead());
        }
    }

}