[AKS] Fixed the issue of Enable-AzAksAddon when there are no addons (#21706)

* [AKS] support parameter OutboundType

* [AKS] Fixed the issue of Enable-AzAksAddon when there are no addons

Author: YanaXu

src/Aks/Aks.Test/ScenarioTests/KubernetesTests.cs

@@ -38,6 +38,13 @@ public void TestAzureKubernetesAddons()
             TestRunner.RunTestScript("Test-NewAzAksAddons");
         }
 
+        [Fact]
+        [Trait(Category.AcceptanceType, Category.CheckIn)]
+        public void TestAzureKubernetesAddonsEnableAndDisable()
+        {
+            TestRunner.RunTestScript("Test-EnableAndDisableAzAksAddons");
+        }
+
         [Fact(Skip = "Please make sure you have graph directory.read permission which is required for grant acrpull permission.")]
         [Trait(Category.AcceptanceType, Category.CheckIn)]
         public void TestNewAzAksWithAcr()

src/Aks/Aks.Test/ScenarioTests/KubernetesTests.ps1

@@ -198,6 +198,42 @@ function Test-NewAzAksAddons
     }
 }
 
+function Test-EnableAndDisableAzAksAddons
+{
+    # Setup
+    $resourceGroupName = Get-RandomResourceGroupName
+    $kubeClusterName = Get-RandomClusterName
+    $kubeClusterName2 = Get-RandomClusterName
+
+    try
+    {
+        New-AzResourceGroup -Name $resourceGroupName -Location 'eastus'
+
+        $cluster = New-AzAksCluster -ResourceGroupName $resourceGroupName -Name $kubeClusterName
+        Assert-Null $cluster.AddonProfiles
+
+        $cluster = $cluster | Enable-AzAksAddon -Name HttpApplicationRouting
+        Assert-AreEqual $true $cluster.AddonProfiles['httpapplicationrouting'].Enabled
+        $cluster = $cluster | Disable-AzAksAddon -Name HttpApplicationRouting
+        Assert-AreEqual $false $cluster.AddonProfiles['httpapplicationrouting'].Enabled
+
+        $cluster2 = New-AzAksCluster -ResourceGroupName $resourceGroupName -Name $kubeClusterName2
+        Assert-Null $cluster2.AddonProfiles
+        #$workspace = New-AzOperationalInsightsWorkspace -Location $location -Name 'akstestws' -ResourceGroupName $resourceGroupName
+        #$workspaceId = $workspace.ResourceId
+        $workspaceId = '/subscriptions/0b1f6471-1bf0-4dda-aec3-cb9272f09590/resourceGroups/akstestgroup/providers/Microsoft.OperationalInsights/workspaces/akstestws'
+
+        $cluster2 = Enable-AzAksAddon -Name 'Monitoring' -WorkspaceResourceId $workspaceId -ResourceGroupName $resourceGroupName -ClusterName $kubeClusterName2
+        Assert-AreEqual $true $cluster2.AddonProfiles['omsagent'].Enabled
+        $cluster2 = Disable-AzAksAddon -Name 'Monitoring' -ResourceGroupName $resourceGroupName -ClusterName $kubeClusterName2
+        Assert-AreEqual $false $cluster2.AddonProfiles['omsagent'].Enabled
+    }
+    finally
+    {
+        Remove-AzResourceGroup -Name $resourceGroupName -Force
+    }
+}
+
 
 <#
 .SYNOPSIS