Implemented initial test for vm converter

Replaced empty test with basic test

Update and verify go modules in hack/tools

Watch Cluster for changes in AzureJSONMachineTemplate, AzureJSONMachine, and AzureJSONMachinePool controllers

Update support link

Fix hack/tools imports so "make modules" works

Added test without optional fields

Add header and remove comment

Added expected error field and better diff printing in case of error

Added tests for individual fields

Fix import order for linter

azure/converters/vm_test.go

@@ -0,0 +1,151 @@
+/*
+Copyright 2022 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package converters
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2021-11-01/compute"
+	"github.com/Azure/go-autorest/autorest/to"
+	"github.com/google/go-cmp/cmp"
+	. "github.com/onsi/gomega"
+	infrav1 "sigs.k8s.io/cluster-api-provider-azure/api/v1beta1"
+)
+
+func TestSDKToVM(t *testing.T) {
+	tests := []struct {
+		name          string
+		sdk           compute.VirtualMachine
+		want          *VM
+		expectedError string
+	}{
+		{
+			name: "Basic conversion with required fields",
+			sdk: compute.VirtualMachine{
+				ID:   to.StringPtr("test-vm-id"),
+				Name: to.StringPtr("test-vm-name"),
+				VirtualMachineProperties: &compute.VirtualMachineProperties{
+					ProvisioningState: to.StringPtr("Succeeded"),
+				},
+			},
+			expectedError: "",
+			want: &VM{
+				ID:    "test-vm-id",
+				Name:  "test-vm-name",
+				State: infrav1.ProvisioningState(compute.ProvisioningStateSucceeded),
+			},
+		},
+		{
+			name: "Should convert and populate with VMSize",
+			sdk: compute.VirtualMachine{
+				ID:   to.StringPtr("test-vm-id"),
+				Name: to.StringPtr("test-vm-name"),
+				VirtualMachineProperties: &compute.VirtualMachineProperties{
+					ProvisioningState: to.StringPtr("Succeeded"),
+					HardwareProfile: &compute.HardwareProfile{
+						VMSize: compute.VirtualMachineSizeTypesStandardA1,
+					},
+				},
+			},
+			expectedError: "",
+			want: &VM{
+				ID:     "test-vm-id",
+				Name:   "test-vm-name",
+				State:  infrav1.ProvisioningState(compute.ProvisioningStateSucceeded),
+				VMSize: "Standard_A1",
+			},
+		},
+		{
+			name: "Should convert and populate with availability zones",
+			sdk: compute.VirtualMachine{
+				ID:   to.StringPtr("test-vm-id"),
+				Name: to.StringPtr("test-vm-name"),
+				VirtualMachineProperties: &compute.VirtualMachineProperties{
+					ProvisioningState: to.StringPtr("Succeeded"),
+				},
+				Zones: &[]string{"1", "2"},
+			},
+			expectedError: "",
+			want: &VM{
+				ID:               "test-vm-id",
+				Name:             "test-vm-name",
+				State:            infrav1.ProvisioningState(compute.ProvisioningStateSucceeded),
+				AvailabilityZone: "1",
+			},
+		},
+		{
+			name: "Should convert and populate with tags",
+			sdk: compute.VirtualMachine{
+				ID:   to.StringPtr("test-vm-id"),
+				Name: to.StringPtr("test-vm-name"),
+				VirtualMachineProperties: &compute.VirtualMachineProperties{
+					ProvisioningState: to.StringPtr("Succeeded"),
+				},
+				Tags: map[string]*string{"foo": to.StringPtr("bar")},
+			},
+			expectedError: "",
+			want: &VM{
+				ID:    "test-vm-id",
+				Name:  "test-vm-name",
+				State: infrav1.ProvisioningState(compute.ProvisioningStateSucceeded),
+				Tags:  infrav1.Tags{"foo": "bar"},
+			},
+		},
+		{
+			name: "Should convert and populate with all fields",
+			sdk: compute.VirtualMachine{
+				ID:   to.StringPtr("test-vm-id"),
+				Name: to.StringPtr("test-vm-name"),
+				VirtualMachineProperties: &compute.VirtualMachineProperties{
+					ProvisioningState: to.StringPtr("Succeeded"),
+					HardwareProfile: &compute.HardwareProfile{
+						VMSize: compute.VirtualMachineSizeTypesStandardA1,
+					},
+				},
+				Zones: &[]string{"1"},
+				Tags:  map[string]*string{"foo": to.StringPtr("bar")},
+			},
+			expectedError: "",
+			want: &VM{
+				ID:               "test-vm-id",
+				Name:             "test-vm-name",
+				State:            infrav1.ProvisioningState(compute.ProvisioningStateSucceeded),
+				VMSize:           "Standard_A1",
+				AvailabilityZone: "1",
+				Tags:             infrav1.Tags{"foo": "bar"},
+			},
+		},
+	}
+	for _, tt := range tests {
+		tt := tt
+		t.Run(tt.name, func(t *testing.T) {
+			g := NewWithT(t)
+			t.Parallel()
+			got, err := SDKToVM(tt.sdk)
+			if tt.expectedError != "" {
+				g.Expect(err).To(HaveOccurred())
+				g.Expect(err).To(MatchError(tt.expectedError))
+			} else {
+				g.Expect(err).NotTo(HaveOccurred())
+			}
+			if !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("Diff between expected result and actual result:\n%s", cmp.Diff(tt.want, got))
+			}
+		})
+	}
+}