Local testing with AWS SAM CLI
The AWS SAM CLI enables you to test serverless applications locally across different infrastructure as code (IaC) tools. This guide explains how to use the AWS SAM CLI for local testing with various IaC frameworks.
Key benefits of using AWS SAM CLI for local testing include:
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Rapid development - Test code changes without deploying to AWS
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Cost efficiency - Develop and test without incurring AWS charges
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Offline capability - Work on your applications without an internet connection
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Simplified debugging - Step through Lambda function code locally using a debugger
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Realistic testing - Test your applications using local emulation of AWS services
Test AWS SAM applications locally
For information about testing applications defined using AWS SAM templates, see Testing and debugging serverless applications in this guide.
Test AWS CloudFormation templates locally
To use the AWS SAM CLI's local testing capabilities with AWS CloudFormation, add the AWS SAM transform to your AWS CloudFormation template. For more information, see AWS SAM template anatomy for:
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Adding AWS SAM transform to AWS CloudFormation templates
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Understanding template compatibility
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Exploring serverless resource syntax
Test AWS CDK applications locally
You can use the AWS SAM CLI to test AWS CDK applications locally after you synthesize the AWS CDK application to AWS CloudFormation templates using the cdk synth command.
For more information, look at Locally test and build AWS CDK applications with the AWS SAM CLI in the AWS CDK developer guide. This includes:
Test Terraform applications locally
The AWS SAM CLI supports Terraform projects and Terraform Cloud. You can use it to perform local debugging and testing of: Lambda functions and layers and the Amazon API Gateway HTTP and REST APIs.
To set up your environment and learn about all available features, see Terraform Support in this guide. This includes:
