1. 确认在测试用例发送消息到SQS队列时，队列和Lambda函数都在同一个可用区和VPC中。
2. 确认测试用例和事件中传递的消息格式一致。
3. 确认Lambda函数权限设置正确，具有接收和读取SQS队列的权限。以下为Lambda函数IAM角色示例：

{
    "Version":"2012-10-17",
    "Statement":[
        {
            "Effect":"Allow",
            "Action":[
                "sqs:ReceiveMessage",
                "sqs:GetQueueAttributes",
                "sqs:DeleteMessage"
            ],
            "Resource":"arn:aws:sqs:us-west-2:123456789012:MyQueue"
        },
        {
            "Effect":"Allow",
            "Action":[
                "logs:CreateLogGroup",
                "logs:CreateLogStream",
                "logs:PutLogEvents"
            ],
            "Resource":"arn:aws:logs:us-west-2:123456789012:*"
        }
    ]
}

4. 确认Lambda函数代码中处理SQS消息的方法正确。以下为一个Node.js的示例：

exports.handler = async (event, context) => {
    console.log('Received event:', JSON.stringify(event));
    const promisses = event.Records.map(async (record) => {
        console.log(`Processing message ${record}`);

        return new Promise((resolve, reject) => {
            // 处理SQS消息的逻辑
            resolve();
        });
    });
    return Promise.all(promisses).then(() => {
        console.log('All messages processed successfully.');
    });
};