Testcontainers best practices recipes

[timtebeek]

Based on this nice article from @sivaprasadreddy
https://www.atomicjar.com/2023/11/testcontainers-best-practices/

What problem are you trying to solve?

Automate some of the best practices for testcontainers, such that users can adopt these with little effort, unlocking a move to testcontainers cloud in some areas.

• Don’t rely on fixed ports for tests
• Don’t hardcode the hostname
• Don’t hardcode the container name
• Copy files into containers instead of mounting them
• Use the same container versions as in production
• Use proper container lifecycle strategy
• Leverage your framework’s integration for Testcontainers
• User preconfigured technology-specific modules when possible
• Use WaitStrategies to check the container is ready

Any additional context

In part also discussed on

• Rewrite testcontainers to use explicit image and version #433 (comment)

[timtebeek]

For context: we already have some recipes in this module; my suggestion is to expand the recipe coverage with the above.

rewrite-testing-frameworks/src/main/resources/META-INF/rewrite/testcontainers.yml

Lines 17 to 28 in 0e44bf7

	type: specs.openrewrite.org/v1beta/recipe
	name: org.openrewrite.java.testing.testcontainers.TestContainersBestPractices
	displayName: Testcontainers best practices
	description: Apply best practices to Testcontainers usage.
	recipeList:
	# Upgrade to latest version of Testcontainers
	- org.openrewrite.java.dependencies.UpgradeDependencyVersion:
	groupId: org.testcontainers
	artifactId: "*"
	newVersion: 1.19.x
	- org.openrewrite.java.testing.testcontainers.ExplicitContainerImages
	- org.openrewrite.java.testing.testcontainers.GetHostMigration