terraform-test

Terraform testing uses .tftest.hcl files to validate module outputs and resource configurations. You define run blocks to execute plan or apply modes, then use assertions to verify expected infrastructure behavior without deploying real resources.

Mock providers simulate provider responses during Terraform testing, allowing you to validate conditional logic and module configurations without real infrastructure dependencies. Use them to test edge cases and default configurations safely in isolated environments.

Yes, Terraform testing validates HCL configurations using plan mode within run blocks. This executes tests against the planned state rather than applied resources, ensuring infrastructure stability and preventing breaking changes without provisioning actual cloud resources.

Run blocks in Terraform testing execute specific operations like plan or apply within .tftest.hcl files. They allow you to define distinct test scenarios that validate module behavior across various configurations, capturing state changes for subsequent assertions.

Yes, understanding Terraform HCL syntax and infrastructure as code principles is required. The testing framework builds upon these foundations, using HCL to structure .tftest.hcl files, define run blocks, and write assertions for module validation.

Writing comprehensive Terraform tests using .tftest.hcl files prevents breaking changes by validating module outputs and resource configurations. Define assertions covering default setups and edge cases to ensure infrastructure stability across module updates without manual verification.