Validate that at least one check is enabled (check-commits or check-pull-request)

[Copilot]

Problem

The action could be misconfigured with both check-commits and check-pull-request set to false, which would result in the action not performing any validation. This creates a confusing user experience where the action runs successfully but doesn't actually check anything.

Solution

Added early validation to fail the action if both checks are disabled. The validation:

• Runs immediately after prerequisite checks, before any processing begins
• Provides a clear error message indicating at least one check must be enabled
• Uses GitHub Actions error annotation for better visibility in the workflow UI

# Example configurations that will now fail with a clear error:
with:
  check-commits: false
  check-pull-request: false  # ❌ Error: At least one check must be enabled

Changes

action.yml

• Added validation check after prerequisite command checks
• Fails with error message if both check-commits and check-pull-request are false

tests/action.test.sh

• Added new test suite test_input_validation() with 4 test cases covering all input combinations:
  • Both checks disabled → should be detected as invalid ✅
  • Only check-commits enabled → valid ✅
  • Only check-pull-request enabled → valid ✅
  • Both checks enabled → valid ✅

Testing

All tests passing:

• ✅ 29 bash tests (25 original + 4 new)
• ✅ 3 JavaScript tests
• ✅ Manual verification of validation logic

Fixes #[issue_number]

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• dev.azure.com
  • Triggering command: node /home/REDACTED/work/azdo_commit_message_validator/azdo_commit_message_validator/node_modules/.bin/jest (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

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This section details on the original issue you should resolve

<issue_title>Validate that commit check or pr check is enabled</issue_title>
<issue_description>If both check-commits and check-pull-request is false, fail the action (at least 1 should be enabled) </issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes #65

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