# Terraform 1 12

> Apply Terraform 1.12 language, CLI, state, testing, migration, and behaviour changes. Load for Terraform work targeting 1.12 or later when the model's knowledge may predate the 2025-05-14 release.

- Skill: `cedws/terraform-1-12` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add cedws/terraform-1-12`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cedws/terraform-1-12/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: DevOps & Infra
- Author: cedws (https://skillmd.com/u/cedws)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cedws/terraform-1-12

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# Terraform 1.12

This overview applies when the project's target Terraform version is at least 1.12.

## Expressions

- Logical `&&` and `||` operators can short-circuit. An unevaluated operand cannot produce errors or side effects from functions.

## Import and identity

- An `import` block can identify a remote object with `identity` instead of `id` when the provider exposes a structured identity schema. The two arguments are mutually exclusive.
- An import block's `for_each` expression cannot depend on the resource it imports.

## Testing

- `terraform test -parallelism=n` controls concurrent provider operations within a run's plan or apply.
- Test `run` blocks can opt into parallel execution when their state dependencies allow it.
- Failed assertions produce structured diagnostic objects for machine-readable output.
- A missing expected failure no longer prevents subsequent test runs from executing.

## Backends and compatibility

- The OCI Object Storage backend is available for remote state.
- Terraform 1.12 requires Linux kernel 3.2 or later.