feat: Argument spec implementation for ssh role

[DonatSzabo]

Enhancement: Added argument spec and assert role spec validation to the ssh role. Also wrote tests for it found in tests/tests_invalid_input.

Reason: Because it is a good addition to the linux-system-roles project.

Result: Successfully added it and prepared tests for it. I used AI during this implementation.

Issue Tracker Tickets (Jira or BZ if any): linux-system-roles/postfix#206 https://redhat.atlassian.net/browse/RHELMISC-16008

Notes: Had to move the fact dependent variables out of vars: into set_fact, so it would run after the setup task.

Summary by CodeRabbit

• New Features

  • Added documented input specifications for SSH role settings, including supported types, defaults, and configuration options.
  • Added validation to reject invalid SSH role parameters before configuration begins.

• Bug Fixes

  • Improved test reliability for platform-specific package selection and configuration ownership.
  • Ensured cleanup and SSH configuration restoration occur after invalid-input checks, including when validation fails.

• Tests

  • Added coverage confirming valid inputs succeed and invalid inputs are rejected with appropriate errors.

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📥 Commits

Reviewing files that changed from the base of the PR and between 549346c and ff3f86c.

📒 Files selected for processing (6)

• meta/argument_specs.yml
• tasks/assert_role_vars.yml
• tasks/main.yml
• tests/tests_additional_packages.yml
• tests/tests_global_config_mode.yml
• tests/tests_invalid_input.yml

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📝 Walkthrough

Walkthrough

The SSH role now declares input metadata and validates selected variables before configuration. Tests evaluate fact-dependent values before facts are cleared and restore configuration during invalid-input test cleanup.

Changes

SSH input validation

Layer / File(s)	Summary
Input specifications meta/argument_specs.yml	The role declares types, defaults, and descriptions for 11 input variables.
Runtime validation and test cleanup tasks/assert_role_vars.yml, tasks/main.yml, tests/tests_invalid_input.yml	The role validates selected variables before configuration. Invalid-input tests cover argument specifications and runtime assertions, then restore configuration in an always cleanup section.
Eager test variable evaluation tests/tests_additional_packages.yml, tests/tests_global_config_mode.yml	Fact-dependent test variables are set before the role runs, while facts are available.

Priority: ⬇️ Low

Merge Risk: 🔵 Low · up to ff3f8

The role documentation may advertise a different ssh_drop_in_name default than runtime behavior, potentially misleading users; this is a low-severity documentation issue and the change is otherwise mergeable.

🚥 Pre-merge checks | ✅ 5 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description Format	⚠️ Warning	The description includes the required Enhancement:, Reason:, and Result: sections. It does not include the mandatory Signed-off-by: section with a name and email address. The reviewed commits …	Add a Signed-off-by: Full Name email@example.com line to the PR description and create or amend the commits with git commit -s so the sign-off is recorded.

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title follows the required Conventional Commits format and accurately describes the addition of argument specifications for the SSH role.
Description check	✅ Passed	The description includes all required template sections and explains the enhancement, reason, result, issue references, and fact-dependent variable changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Description Format

Explanation

The description includes the required Enhancement:, Reason:, and Result: sections. It does not include the mandatory Signed-off-by: section with a name and email address. The reviewed commits also contain no sign-off trailers.

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[DonatSzabo]

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Actionable comments posted: 2

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Inline comments:
In `@meta/argument_specs.yml`:
- Line 39: Update the ssh_drop_in_name entry in the argument specification to
document the same platform-resolved default or condition defined by
__ssh_drop_in_name in defaults/main.yml, replacing the null value and keeping
the documentation aligned with role execution.

In `@tests/tests_invalid_input.yml`:
- Around line 206-207: Move the “Restore configuration files” task that includes
tasks/restore.yml into the existing always block covering “Run invalid input
tests,” and add the tests::cleanup tag to the cleanup task so restoration runs
even when assertions fail.

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Reviewing files that changed from the base of the PR and between 32a0423 and cb2c49e.

📒 Files selected for processing (6)

• meta/argument_specs.yml
• tasks/assert_role_vars.yml
• tasks/main.yml
• tests/tests_additional_packages.yml
• tests/tests_global_config_mode.yml
• tests/tests_invalid_input.yml

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[richm]

ansible check tests fixed by #268

[richm]

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[DonatSzabo]

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[DonatSzabo]

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[richm]

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[richm]

@DonatSzabo you'll need to rebase on top of the latest main branch to get the fix for ansible-test milestone