Does this skill help prevent resource leaks?

Yes, it provides standardized patterns for container cleanup using test lifecycle hooks to ensure Docker resources are released even if tests fail.

Do I need Docker to use this skill?

Yes, Testcontainers requires a running Docker or Podman environment to spin up the necessary service containers during test execution.

Is it better to use Testcontainers than mocking?

For integration testing, yes. It allows you to test against real versions of your dependencies, catching compatibility bugs that mocks often miss.

How many services are supported?

There are over 62 pre-configured modules available, including popular choices like PostgreSQL, Redis, Kafka, Elasticsearch, and LocalStack.

What is Testcontainers for Go?

It is a Go library that provides lightweight, throwaway instances of common databases, message queues, or any service that can run in a Docker container for automated testing.

Testcontainers for Go

Name: Testcontainers for Go
Author: linehaul-ai

bylinehaul-ai

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Security & Testing

Simplifies Go integration testing by providing lightweight, throwaway Docker instances for databases, message queues, and cloud services.

About

This skill provides comprehensive guidance and implementation patterns for using Testcontainers for Go, enabling developers to write reliable, reproducible integration tests without mocking external dependencies. By leveraging over 62 pre-configured modules for popular services like PostgreSQL, Kafka, and Redis, it ensures production-ready configurations and automatic resource cleanup. It is an essential tool for teams looking to create isolated test environments that mirror production behavior while maintaining fast, ephemeral infrastructure within their Go-based CI/CD pipelines.

Key Features

2 GitHub stars
Advanced wait strategies to eliminate flaky tests in CI environments
Built-in connection helpers for automatic credential and endpoint management
Support for 62+ pre-configured modules including PostgreSQL, Kafka, and Redis
Database snapshot and restore capabilities for total test isolation
Automated Docker container lifecycle and resource management

Use Cases

Building reproducible test environments that run identically in local and CI settings
Testing application behavior across multiple versions of external dependencies
Writing integration tests that require real database or message queue instances

About

Key Features

2 GitHub stars
Advanced wait strategies to eliminate flaky tests in CI environments
Built-in connection helpers for automatic credential and endpoint management
Support for 62+ pre-configured modules including PostgreSQL, Kafka, and Redis
Database snapshot and restore capabilities for total test isolation
Automated Docker container lifecycle and resource management

Use Cases

Building reproducible test environments that run identically in local and CI settings
Testing application behavior across multiple versions of external dependencies
Writing integration tests that require real database or message queue instances