> For the complete documentation index, see [llms.txt](https://eric-lo.gitbook.io/lab-serverless-function/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://eric-lo.gitbook.io/lab-serverless-function/deploy-and-test-your-restapi.md).

# Deploy and test your Function

First, click **Test** button on the left of **Deploy**.

![](/files/pGoiSALIh5PrluPSzRwf)

Select **Create new test event**. For Event template, choose **hello-world**. Give a name to your test and write your test case in json format, like the following figure. Then click **Create** to create your test.

![](/files/NvH2sS4cLuzRPM5VNjRd)

Then click Test again, you will get a file called Execution result, showing the result of your test.

![](/files/4GI3czTWXMlbLzgK1ibM)

We can also invoke our deployed lambda function through aws cli. Go to the shell we opened before entering into the AWS Console, paste the following command, you will successfully invoke your sum function and get the result.

```
# The function return will be saved in response.json.
aws lambda invoke --cli-binary-format raw-in-base64-out --function-name sum --payload '{ "a": 2, "b": 3}' response.json && less response.json
```

![](/files/RotCOfHsVSov1fLhvg9n)


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