[BUG] Deployments with more than one module fail at tenant scope

[jonathankerkin]

Existing rule

No response

Description of the issue

Deployments that contain more than one module fail. Type of module, and complexity of module does not effect the failure. Pinning to an earlier version of PSRule.Rules.Azure (1.38.0) removes the error.

Having a single module referenced in the deployment does not cause the error.

Error messages

Error: Failed to expand bicep source '/home/runner/work/azure-governance/azure-governance/deployments/mg-platform/mg-out-of-band/deploy.bicep'. Exception calling "GetBicepResources" with "2" argument(s): "Unable to expand resources because the source file '/home/runner/work/azure-governance/azure-governance/deployments/mg-platform/mg-out-of-band/deploy.bicep' was not valid. Index was outside the bounds of the array."

Reproduction

Any deployment with more than one module present causes this error. Deployment sample
'
module mg '../../../modules/management-group/v1/main.bicep' = {
name: 'mg-outofband'
params: {
displayName: 'Out of Band'
parent: 'mg-platform'
}
}

module oobSubscription '../../../modules/subscription/v2/main.bicep' = {
scope: managementGroup(mg.name)
name: 'sub-oob-prd-001'
params: {
subscriptionManagementGroupId: mg.name
subscriptionBillingScope: billingScope.id
tags: {
businessOwner: ''
businessGroup: 'Infrastructure'
costCentre: 'Infrastructure'
environment: 'prd'
technicalContacts: 'i'
technicalGroup: 'Infrastructure'
sourceCode: 'github.com/aurizon/azure-governance'
}
assignments: [
{
principalId: ''
description: 'Grant permissions for deployments from azure-core-platform GitHub Actions.'
principalType: 'ServicePrincipal'
role: 'Owner'
}
]
emails: ''
subscriptionWorkload: 'Production'
}
}
`

Version of PSRule

2.9.0

Version of PSRule for Azure

1.39.3

Additional context

No response

[BernieWhite]

Thanks for reporting the issue @jonathankerkin

[BernieWhite]

@jonathankerkin This should be fixed in latest preview PSRule for Azure v1.40.0-B0147.