fix: Fixed test for System-Assigned Identity output

avm/res/api-management/service/main.bicep

@@ -569,7 +569,7 @@ output resourceId string = service.id
 output resourceGroupName string = resourceGroup().name
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = service.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = service.?identity.?principalId
 
 @description('The location the resource was deployed into.')
 output location string = service.location

avm/res/api-management/service/version.json

@@ -1,7 +1,7 @@
 {
     "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-    "version": "0.6",
+    "version": "0.7",
     "pathFilters": [
         "./main.json"
     ]
-}
+}

avm/res/app/container-app/main.bicep

@@ -314,7 +314,7 @@ output resourceGroupName string = resourceGroup().name
 output name string = containerApp.name
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = containerApp.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = containerApp.?identity.?principalId
 
 @description('The location the resource was deployed into.')
 output location string = containerApp.location

avm/res/app/container-app/version.json

@@ -1,6 +1,6 @@
 {
   "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-  "version": "0.11",
+  "version": "0.12",
   "pathFilters": [
     "./main.json"
   ]

avm/res/app/job/main.bicep

@@ -280,7 +280,7 @@ output location string = job.location
 @metadata({
   example: '00000000-0000-0000-0000-000000000000'
 })
-output systemAssignedMIPrincipalId string = job.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = job.?identity.?principalId
 
 // =============== //
 //   Definitions   //

avm/res/app/job/version.json

@@ -1,6 +1,6 @@
 {
     "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-    "version": "0.5",
+    "version": "0.6",
     "pathFilters": [
         "./main.json"
     ]

avm/res/app/managed-environment/main.bicep

@@ -270,7 +270,7 @@ output name string = managedEnvironment.name
 output resourceId string = managedEnvironment.id
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = managedEnvironment.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = managedEnvironment.?identity.?principalId
 
 @description('The Default domain of the Managed Environment.')
 output defaultDomain string = managedEnvironment.properties.defaultDomain

avm/res/app/managed-environment/version.json

@@ -1,6 +1,6 @@
 {
     "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-    "version": "0.8",
+    "version": "0.9",
     "pathFilters": [
         "./main.json"
     ]

avm/res/batch/batch-account/main.bicep

@@ -342,7 +342,7 @@ output resourceGroupName string = resourceGroup().name
 output location string = batchAccount.location
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = batchAccount.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = batchAccount.?identity.?principalId
 
 @description('The private endpoints of the batch account.')
 output privateEndpoints array = [

avm/res/batch/batch-account/version.json

@@ -1,6 +1,6 @@
 {
     "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-    "version": "0.9",
+    "version": "0.10",
     "pathFilters": [
         "./main.json"
     ]

avm/res/cache/redis/main.bicep

@@ -376,7 +376,7 @@ output sslPort int = redis.properties.sslPort
 output subnetResourceId string = !empty(subnetResourceId) ? redis.properties.subnetId : ''
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = redis.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = redis.?identity.?principalId
 
 @description('The location the resource was deployed into.')
 output location string = redis.location

avm/res/cache/redis/version.json

@@ -1,6 +1,6 @@
 {
     "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-    "version": "0.8",
+    "version": "0.9",
     "pathFilters": [
         "./main.json"
     ]

avm/res/cdn/profile/main.bicep

@@ -343,7 +343,7 @@ output endpointId string = !empty(endpointProperties) ? profile_endpoint.outputs
 output uri string = !empty(endpointProperties) ? profile_endpoint.outputs.uri : ''
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = profile.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = profile.?identity.?principalId
 
 @description('The list of records required for custom domains validation.')
 output dnsValidation dnsValidationType[] = [

avm/res/cdn/profile/version.json

@@ -1,7 +1,7 @@
 {
     "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-    "version": "0.11",
+    "version": "0.12",
     "pathFilters": [
         "./main.json"
     ]
-}
+}

avm/res/communication/communication-service/main.bicep

@@ -185,7 +185,7 @@ output resourceGroupName string = resourceGroup().name
 output location string = communicationService.location
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = communicationService.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = communicationService.?identity.?principalId
 
 // ================ //
 // Definitions      //

avm/res/communication/communication-service/version.json

@@ -1,6 +1,6 @@
 {
   "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-  "version": "0.2",
+  "version": "0.3",
   "pathFilters": [
     "./main.json"
   ]

avm/res/compute/disk-encryption-set/main.bicep

@@ -214,7 +214,7 @@ output name string = diskEncryptionSet.name
 output resourceGroupName string = resourceGroup().name
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = diskEncryptionSet.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = diskEncryptionSet.?identity.?principalId
 
 @description('The idenities of the disk encryption set.')
 output identities object = diskEncryptionSet.identity

avm/res/compute/disk-encryption-set/version.json

@@ -1,6 +1,6 @@
 {
     "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-    "version": "0.3",
+    "version": "0.4",
     "pathFilters": [
         "./main.json"
     ]

avm/res/compute/virtual-machine-scale-set/main.bicep

@@ -875,7 +875,7 @@ output resourceGroupName string = resourceGroup().name
 output name string = vmss.name
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = vmss.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = vmss.?identity.?principalId
 
 @description('The location the resource was deployed into.')
 output location string = vmss.location

avm/res/compute/virtual-machine-scale-set/version.json

@@ -1,7 +1,7 @@
 {
     "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-    "version": "0.5",
+    "version": "0.6",
     "pathFilters": [
         "./main.json"
     ]
-}
+}

avm/res/compute/virtual-machine/main.bicep

@@ -1040,7 +1040,7 @@ output resourceId string = vm.id
 output resourceGroupName string = resourceGroup().name
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = vm.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = vm.?identity.?principalId
 
 @description('The location the resource was deployed into.')
 output location string = vm.location

avm/res/compute/virtual-machine/version.json

@@ -1,6 +1,6 @@
 {
   "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-  "version": "0.11",
+  "version": "0.12",
   "pathFilters": [
     "./main.json"
   ]

avm/res/container-registry/registry/credential-set/main.bicep

@@ -47,7 +47,7 @@ output resourceGroupName string = resourceGroup().name
 output resourceId string = credentialSet.id
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = credentialSet.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = credentialSet.?identity.?principalId
 
 // =============== //
 //   Definitions   //

avm/res/container-registry/registry/main.bicep

@@ -508,7 +508,7 @@ output resourceGroupName string = resourceGroup().name
 output resourceId string = registry.id
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = registry.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = registry.?identity.?principalId
 
 @description('The location the resource was deployed into.')
 output location string = registry.location

avm/res/container-registry/registry/version.json

@@ -1,6 +1,6 @@
 {
     "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-    "version": "0.6",
+    "version": "0.7",
     "pathFilters": [
         "./main.json"
     ]

avm/res/container-service/managed-cluster/main.bicep

@@ -1016,7 +1016,7 @@ output controlPlaneFQDN string = enablePrivateCluster
   : managedCluster.properties.fqdn
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = managedCluster.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = managedCluster.?identity.?principalId
 
 @description('The Client ID of the AKS identity.')
 output kubeletIdentityClientId string = managedCluster.properties.?identityProfile.?kubeletidentity.?clientId ?? ''

avm/res/container-service/managed-cluster/version.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-  "version": "0.5",
+  "version": "0.6",
   "pathFilters": [
     "./main.json"
   ]
-}
+}

avm/res/data-factory/factory/main.bicep

@@ -389,7 +389,7 @@ output resourceId string = dataFactory.id
 output resourceGroupName string = resourceGroup().name
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = dataFactory.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = dataFactory.?identity.?principalId
 
 @description('The location the resource was deployed into.')
 output location string = dataFactory.location

avm/res/data-factory/factory/version.json

@@ -1,6 +1,6 @@
 {
   "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-  "version": "0.8",
+  "version": "0.9",
   "pathFilters": [
     "./main.json"
   ]

avm/res/data-protection/backup-vault/main.bicep

@@ -187,7 +187,7 @@ output resourceGroupName string = resourceGroup().name
 output name string = backupVault.name
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = backupVault.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = backupVault.?identity.?principalId
 
 @description('The location the resource was deployed into.')
 output location string = backupVault.location

avm/res/data-protection/backup-vault/version.json

@@ -1,6 +1,6 @@
 {
     "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-    "version": "0.7",
+    "version": "0.8",
     "pathFilters": [
         "./main.json"
     ]

avm/res/databricks/access-connector/main.bicep

@@ -129,7 +129,7 @@ output resourceId string = accessConnector.id
 output resourceGroupName string = resourceGroup().name
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = accessConnector.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = accessConnector.?identity.?principalId
 
 @description('The location the resource was deployed into.')
 output location string = accessConnector.location

avm/res/databricks/access-connector/version.json

@@ -1,6 +1,6 @@
 {
     "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-    "version": "0.3",
+    "version": "0.4",
     "pathFilters": [
         "./main.json"
     ]

avm/res/digital-twins/digital-twins-instance/endpoint--event-hub/main.bicep

@@ -79,7 +79,7 @@ output name string = endpoint.name
 
 @description('The principal ID of the system assigned identity. Note: As of 2024-03 is not exported by API.')
 #disable-next-line BCP187
-output systemAssignedMIPrincipalId string = endpoint.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = endpoint.?identity.?principalId
 
 // =============== //
 //   Definitions   //

avm/res/digital-twins/digital-twins-instance/endpoint--service-bus/main.bicep

@@ -79,7 +79,7 @@ output name string = endpoint.name
 
 @description('The principal ID of the system assigned identity. Note: As of 2024-03 is not exported by API.')
 #disable-next-line BCP187
-output systemAssignedMIPrincipalId string = endpoint.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = endpoint.?identity.?principalId
 
 // =============== //
 //   Definitions   //

avm/res/digital-twins/digital-twins-instance/main.bicep

@@ -309,7 +309,7 @@ output hostname string = digitalTwinsInstance.properties.hostName
 output location string = digitalTwinsInstance.location
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = digitalTwinsInstance.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = digitalTwinsInstance.?identity.?principalId
 
 // =============== //
 //   Definitions   //

avm/res/digital-twins/digital-twins-instance/version.json

@@ -1,7 +1,7 @@
 {
     "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-    "version": "0.1",
+    "version": "0.2",
     "pathFilters": [
         "./main.json"
     ]
-}
+}

avm/res/document-db/database-account/main.bicep

@@ -647,7 +647,7 @@ output resourceId string = databaseAccount.id
 output resourceGroupName string = resourceGroup().name
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = databaseAccount.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = databaseAccount.?identity.?principalId
 
 @description('The location the resource was deployed into.')
 output location string = databaseAccount.location

avm/res/document-db/database-account/version.json

@@ -1,6 +1,6 @@
 {
   "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-  "version": "0.10",
+  "version": "0.11",
   "pathFilters": [
     "./main.json"
   ]

avm/res/elastic-san/elastic-san/version.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-  "version": "0.1",
+  "version": "0.2",
   "pathFilters": [
     "./main.json"
   ]
-}
+}

avm/res/elastic-san/elastic-san/volume-group/main.bicep

@@ -216,7 +216,7 @@ output location string = location
 output resourceGroupName string = resourceGroup().name
 
 @sys.description('The principal ID of the system assigned identity of the deployed Elastic SAN Volume Group.')
-output systemAssignedMIPrincipalId string = volumeGroup.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = volumeGroup.?identity.?principalId
 
 @sys.description('Details on the deployed Elastic SAN Volumes.')
 output volumes volumeOutputType[] = [

avm/res/event-grid/domain/main.bicep

@@ -277,7 +277,7 @@ output resourceGroupName string = resourceGroup().name
 output location string = domain.location
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = domain.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = domain.?identity.?principalId
 
 @description('The private endpoints of the event grid domain.')
 output privateEndpoints array = [

avm/res/event-grid/domain/version.json

@@ -1,6 +1,6 @@
 {
   "$schema": "https://aka.ms/bicep-registry-module-version-file-schema#",
-  "version": "0.6",
+  "version": "0.7",
   "pathFilters": [
     "./main.json"
   ]

avm/res/event-grid/namespace/main.bicep

@@ -439,7 +439,7 @@ output location string = namespace.location
 output resourceGroupName string = resourceGroup().name
 
 @description('The principal ID of the system assigned identity.')
-output systemAssignedMIPrincipalId string = namespace.?identity.?principalId ?? ''
+output systemAssignedMIPrincipalId string? = namespace.?identity.?principalId
 
 @sys.description('The Resources IDs of the EventGrid Namespace Topics.')
 output topicResourceIds array = [