[BUG] Exception Calling GetBicepResources

[oZakari]

Description of the issue

Creating a subscription placement module for the Bicep registry.

Tests are failing with exception during PSRule.

Error messages

https://github.com/oZakari/bicep-registry-modules/actions/runs/12997174362/job/36247590993

Error: Failed to expand bicep source '/home/runner/work/bicep-registry-modules/bicep-registry-modules/avm/ptn/mgmt-groups/subscription-placement/tests/e2e/defaults/main.test.bicep'. Exception calling "GetBicepResources" with "2" argument(s): "Unable to expand resources because the source file '/home/runner/work/bicep-registry-modules/bicep-registry-modules/avm/ptn/mgmt-groups/subscription-placement/tests/e2e/defaults/main.test.bicep' was not valid. An error occurred evaluating expression '[format('subPlacment-{0}{1}', uniqueString(parameters('parSubscriptionPlacement')[copyIndex()].managementGroupId), copyIndex())]' line 16682. The argument 'baseString' for 'UniqueString' is not a valid string."

Reproduction

Run the tests locally within the Bicep Registry Module

Version of PSRule

2.9.0

How are you running PSRule

GitHub Actions

Additional context

No response

[github-actions]

Thanks for raising your first issue, the team appreciates the time you have taken 😉