AWS
AWS ECS and Fargate Integration Testing: Complete Guide
Testing containerized workloads on AWS ECS and Fargate requires a different mindset than testing traditional server-based applications.
AWS
Latest
Mobile Testing
AWS Device Farm: Complete Guide to Mobile App Testing
AWS Device Farm lets you run tests on real Android and iOS devices hosted in AWS data centers.
AWS
AWS CloudFormation Testing: From Linting to Deployment Validation
CloudFormation templates grow from 50 lines to 5000 lines. They define VPCs, IAM policies, RDS instances, and load balancers.
LLM Testing
AWS Bedrock Model Evaluation: Automated Testing and Quality Metrics
AWS Bedrock Model Evaluation lets you run structured quality assessments against Bedrock-hosted models — comparing outputs against ground truth, scoring on custom criteria, and tracking results across model versions. Here's how to set up automated evaluation pipelines using the Bedrock API and boto3. What Bedrock Model Evaluation Offers
API Testing
AWS Cognito Testing Guide: User Pools, Identity Pools, JWT Validation, and Amplify
AWS Cognito provides user authentication, authorization, and identity management for AWS-hosted applications.
DevOps
AWS CDK Testing Patterns: Assertions, Snapshots, and Integration Tests
AWS CDK generates CloudFormation templates from TypeScript, Python, or Java code. The CDK Assertions library lets you test the generated template — verifying resource configurations without deploying anything. CDK snapshot tests catch unintended template changes. CDK integ tests validate actual deployments in real AWS accounts. Together, these three patterns give you
Testing
Object Storage Testing Best Practices: Mocking vs Real Buckets, CORS, CDN Invalidation, and Encryption
Teams who write good unit tests for their business logic but skip integration tests for their storage configuration get burned.
Testing
Testing S3 Multipart Uploads: Chunked Uploads, Resumable Uploads, and Large File Handling
Multipart upload is S3's mechanism for uploading files larger than 5GB (required) or any large file where reliability matters (recommended above 100MB).
Testing
Amazon Redshift Testing: Unit Tests, Data Validation, and CI Integration
Testing Redshift pipelines is expensive and slow when done against a live cluster. This guide covers running Redshift-compatible tests against LocalStack, validating COPY/UNLOAD workflows, asserting on distribution and sort key behavior, and integrating Great Expectations for ongoing data quality monitoring — all in a CI pipeline that costs nothing
Testing
AWS S3 Testing Guide: Unit Testing with moto, Presigned URLs, Versioning, and Lifecycle Policies
S3 is one of those services that looks trivially easy to test — until you actually try. Presigned URLs have expiry logic. Versioning changes how deletes work.
Testing
AWS Messaging Testing Best Practices: DLQ, Retry, Idempotency, and Message Ordering
The failure modes of SQS, SNS, and EventBridge are well-known: duplicate delivery, out-of-order messages, poison pills that fill DLQs, and missing idempotency guards that corrupt state. This post covers the testing patterns that catch these bugs before they reach production. Key Takeaways Test idempotency explicitly. SQS delivers
Testing
LocalStack Integration Testing: Full SQS + SNS + Lambda Stack Setup
moto is great for unit tests but stops at service boundaries. When you need SQS triggering Lambda, SNS fan-out to multiple SQS queues, or Lambda updating DynamoDB — you need LocalStack. This guide sets up a full LocalStack integration test environment with Docker Compose, pytest fixtures, and reusable infrastructure helpers.