fix

Author: Zheyu Shen

builder/azure/arm/config.go

@@ -1601,6 +1601,12 @@ func assertRequiredParametersSet(c *Config, errs *packersdk.MultiError) {
 		errs = packersdk.MultiErrorAppend(errs, fmt.Errorf("The disk_caching_type %q is invalid", c.DiskCachingType))
 	}
 
+	if c.DiskControllerType != "" {
+		if !strings.EqualFold(c.DiskControllerType, "SCSI") && !strings.EqualFold(c.DiskControllerType, "NVMe") {
+			errs = packersdk.MultiErrorAppend(errs, fmt.Errorf("The disk_controller_type %q is invalid, the valid values are SCSI and NVMe", c.DiskControllerType))
+		}
+	}
+
 	/////////////////////////////////////////////
 	// License Type (Azure Hybrid Benefit)
 	if c.LicenseType != "" {

…oymentDiskControllerType01.approved.json …tDiskControllerTypeDefault.approved.jsonbuilder/azure/arm/template_factory_test.TestVirtualMachineDeploymentDiskControllerType01.approved.json renamed to builder/azure/arm/template_factory_test.TestVirtualMachineDeploymentDiskControllerTypeDefault.approved.json builder/azure/arm/template_factory_test.TestVirtualMachineDeploymentDiskControllerType01.approved.json renamed to builder/azure/arm/template_factory_test.TestVirtualMachineDeploymentDiskControllerTypeDefault.approved.json

@@ -674,7 +674,7 @@ func TestVirtualMachineDeploymentAcceleratedNetworking02(t *testing.T) {
 }
 
 // Ensure disk controller type is not set when not specified in config
-func TestVirtualMachineDeploymentDiskControllerType01(t *testing.T) {
+func TestVirtualMachineDeploymentDiskControllerTypeDefault(t *testing.T) {
 	var c Config
 	_, err := c.Prepare(getArmBuilderConfiguration(), getPackerConfiguration())
 	if err != nil {
@@ -689,7 +689,7 @@ func TestVirtualMachineDeploymentDiskControllerType01(t *testing.T) {
 }
 
 // Ensure disk controller type is set when specified in config
-func TestVirtualMachineDeploymentDiskControllerType02(t *testing.T) {
+func TestVirtualMachineDeploymentDiskControllerTypeNVMe(t *testing.T) {
 	var c Config
 	_, err := c.Prepare(getArmBuilderConfiguration(), getPackerConfiguration())
 	if err != nil {