您如何测试针对AWS API编写的代码

I'm writing an application in Java that will upload a file up to AWS S3. The file will be given to the application in an argument, not hardcoded. I'd like to write tests to ensure that the file actually gets uploaded to S3. The test will be written before the code for TDD. (I have actually already written the code, but I'd like to ingrain TDD practices into all of my work as a habit)I'm writing an application in Java that will up