java unit test单元测试示例程序

package org.example; import javax.transaction.InvalidTransactionException; import java.util.UUID; public class Transaction { private String id; private Long buyerId; private Long createTimestamp; private int status; private String walletTransactionId; // 添加一个成员变量及其 set 方法。就可以将对象放到外面 private WalletRpcService walletRpcService; private TransactionLock lock; // 修改点2,提出方法，在test类中重写此方法。 protected boolean isExpired() { long executionInvokedTimestamp = System.currentTimeMillis(); System.out.println("=======方法内部的isExpired=="); return executionInvokedTimestamp - createTimestamp > 14; } public void setTransactionLock(TransactionLock lock) { this.lock = lock; } // 修改点3：WalletRpcService改为注入的方式，通过构造传入，避免在类中new public Transaction(String preAssignedId, Long buyerId, WalletRpcService walletRpcService) { if (preAssignedId != null && !preAssignedId.isEmpty()) { this.id = preAssignedId; } else { this.id = UUID.randomUUID().toString(); } if (!this.id.startsWith("t_")) { this.id = "t_" + preAssignedId; } this.buyerId = buyerId; this.status = STATUS.TO_BE_EXECUTD; this.createTimestamp = System.currentTimeMillis(); this.walletRpcService = walletRpcService; } public boolean execute() throws InvalidTransactionException { if (buyerId == null) { throw new InvalidTransactionException(); } if (status == STATUS.EXECUTED) { return true; } boolean isLocked = false; try { isLocked = lock.lock(id); if (!isLocked) { return false; // 锁定未成功，返回 false，job 兜底执行 } if (status == STATUS.EXECUTED) { return true; } // createTimestamp 临时 if (isExpired()) { this.status = STATUS.EXPIRED; return false; } String walletTransactionId = walletRpcService.moveMoney(); if (walletTransactionId != null) { this.walletTransactionId = walletTransactionId; this.status = STATUS.EXECUTED; return true; } else { this.status = STATUS.FAILED; return false; } } finally { if (isLocked) { lock.unlock(id); } } } }