Fix failing unit tests due to missing kubeconfig in unit test environment

Author: cemakd

pkg/gce-cloud-provider/compute/gce.go

@@ -197,7 +197,7 @@ func CreateCloudProvider(ctx context.Context, vendorVersion string, configPath s
 
 	if multiTenancyEnabled {
 		klog.Info("Setting up multitenancy")
-		ti, err := tenancy.NewTenantsInformer(multiTenancyEnabled)
+		ti, err := tenancy.NewTenantsInformer(multiTenancyEnabled, tenancy.GetKubeConfig())
 		if err != nil {
 			return nil, fmt.Errorf("failed initializing tenant informer: %w", err)
 		}

pkg/gce-cloud-provider/compute/tenancy/informer.go

@@ -42,13 +42,12 @@ var defaultResyncPeriod = 10 * time.Minute
 // tenancy.gke.io/tenants objects.
 //
 // After creating a new TenantsInformer, you must call Run() to start it.
-func NewTenantsInformer(isMultiTenantCluster bool) (TenantsInformer, error) {
+func NewTenantsInformer(isMultiTenantCluster bool, kubeConfig *rest.Config) (TenantsInformer, error) {
 	if !isMultiTenantCluster {
 		return NewNoopTenantsInformer(), nil
 	}
 
-	kc := GetKubeConfig()
-	dynamicClient, err := newDynamicClientForConfig(kc)
+	dynamicClient, err := newDynamicClientForConfig(kubeConfig)
 	if err != nil {
 		return nil, fmt.Errorf("failed to create dynamic client for CRD: %w", err)
 	}

pkg/gce-cloud-provider/compute/tenancy/informer_test.go

@@ -18,7 +18,7 @@ func TestNewTenantsInformer_MultiTenantCluster(t *testing.T) {
 	newDynamicClientForConfig = func(*rest.Config) (dynamic.Interface, error) {
 		return dynamicfake.NewSimpleDynamicClient(runtime.NewScheme()), nil
 	}
-	informer, err := NewTenantsInformer(true)
+	informer, err := NewTenantsInformer(true, &rest.Config{})
 	if err != nil {
 		t.Fatalf("NewTenantsInformer(true, &rest.Config{}, 1h) failed: %v", err)
 	}
@@ -34,7 +34,7 @@ func TestNewTenantsInformer_SingleTenantCluster(t *testing.T) {
 	newDynamicClientForConfig = func(*rest.Config) (dynamic.Interface, error) {
 		return dynamicfake.NewSimpleDynamicClient(runtime.NewScheme()), nil
 	}
-	informer, err := NewTenantsInformer(false)
+	informer, err := NewTenantsInformer(false, &rest.Config{})
 	if err != nil {
 		t.Fatalf("NewTenantsInformer(false, &rest.Config{}, 1h) failed: %v", err)
 	}