Add unit-tests and fix failed

go.mod

@@ -181,7 +181,7 @@ require (
 	go.opentelemetry.io/otel/trace v1.20.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	golang.org/x/mod v0.14.0 // indirect
-	golang.org/x/sync v0.6.0 // indirect
+	golang.org/x/sync v0.6.0
 	golang.org/x/sys v0.18.0 // indirect
 	golang.org/x/term v0.18.0 // indirect
 	golang.org/x/time v0.5.0 // indirect

pkg/providers/nutanix/validator.go

@@ -5,7 +5,6 @@ import (
 	"fmt"
 	"net/http"
 	"regexp"
-	"slices"
 	"strconv"
 	"strings"
 
@@ -174,7 +173,7 @@ func (v *Validator) validateFailureDomains(ctx context.Context, client Client, s
 func (v *Validator) validateWorkerMachineGroup(spec *cluster.Spec, workerMachineGroupName string) error {
 	workerMachineGroupNames := getWorkerMachineGroupNames(spec)
 
-	if !slices.Contains(workerMachineGroupNames, workerMachineGroupName) {
+	if !sliceContains(workerMachineGroupNames, workerMachineGroupName) {
 		return fmt.Errorf("worker machine group %s not found in the cluster worker node group definitions", workerMachineGroupName)
 	}
 
@@ -588,3 +587,12 @@ func findProjectUUIDByName(ctx context.Context, v3Client Client, projectName str
 
 	return res.Entities[0].Metadata.UUID, nil
 }
+
+func sliceContains(slice []string, element string) bool {
+	for _, sliceElement := range slice {
+		if sliceElement == element {
+			return true
+		}
+	}
+	return false
+}

pkg/providers/nutanix/validator_test.go

@@ -59,6 +59,9 @@ var nutanixDatacenterConfigSpecWithFailureDomainInvalidCluster string
 //go:embed testdata/datacenterConfig_with_failure_domains_invalid_subnet.yaml
 var nutanixDatacenterConfigSpecWithFailureDomainInvalidSubnet string
 
+//go:embed testdata/datacenterConfig_with_failure_domains_invalid_wg.yaml
+var nutanixDatacenterConfigSpecWithFailureDomainInvalidWorkerMachineGroups string
+
 func fakeClusterList() *v3.ClusterListIntentResponse {
 	return &v3.ClusterListIntentResponse{
 		Entities: []*v3.ClusterIntentResponse{
@@ -217,6 +220,40 @@ func fakeProjectList() *v3.ProjectListResponse {
 	}
 }
 
+func TestSliceContainsFunc(t *testing.T) {
+	tests := []struct {
+		name     string
+		slice    []string
+		value    string
+		expected bool
+	}{
+		{
+			name:     "empty slice",
+			slice:    []string{},
+			value:    "test",
+			expected: false,
+		},
+		{
+			name:     "slice contains value",
+			slice:    []string{"test", "test1", "test2"},
+			value:    "test",
+			expected: true,
+		},
+		{
+			name:     "slice does not contain value",
+			slice:    []string{"test", "test2", "test3"},
+			value:    "test1",
+			expected: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			assert.Equal(t, tt.expected, sliceContains(tt.slice, tt.value))
+		})
+	}
+}
+
 func TestNutanixValidatorValidateMachineConfig(t *testing.T) {
 	ctrl := gomock.NewController(t)
 
@@ -721,6 +758,11 @@ func TestNutanixValidatorValidateDatacenterConfig(t *testing.T) {
 			dcConfFile: nutanixDatacenterConfigSpecWithFailureDomainInvalidSubnet,
 			expectErr:  true,
 		},
+		{
+			name:       "failure domains with invalid workerMachineGroups",
+			dcConfFile: nutanixDatacenterConfigSpecWithFailureDomainInvalidWorkerMachineGroups,
+			expectErr:  true,
+		},
 	}
 
 	ctrl := gomock.NewController(t)