// in again here.
	pvcutil.EnforceDataSourceBackwardsCompatibility(&newPvc.Spec, &oldPvc.Spec)
	pvcutil.NormalizeDataSources(&newPvc.Spec)

	// We also normalize the data source fields of the old PVC, so that objects saved
	// from an earlier version will pass validation.
	pvcutil.NormalizeDataSources(&oldPvc.Spec)
}

		return false
	}
	if oldPVCSpec.DataSourceRef != nil {
		return true
	}
	return false
}

// NormalizeDataSources ensures that DataSource and DataSourceRef have the same contents
// as long as both are not explicitly set.
// This should be used by creates/gets of PVCs, but not updates
func NormalizeDataSources(pvcSpec *core.PersistentVolumeClaimSpec) {
	// Don't enable this behavior if the feature gate is not on

	// We set dataSourceRef to the same value as dataSource at creation time now,
	// but for pre-existing PVCs with data sources, the dataSourceRef field will
	// be blank, so we fill it in here at read time.
	pvcutil.NormalizeDataSources(&pvc.Spec)
}

// StatusREST implements the REST endpoint for changing the status of a persistentvolumeclaim.
type StatusREST struct {
	store *genericregistry.Store
}

	featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.CrossNamespaceVolumeDataSource, true)

	for testName, test := range tests {
		t.Run(testName, func(t *testing.T) {
			NormalizeDataSources(&test.spec)
			if !reflect.DeepEqual(test.spec.DataSource, test.want) {
				t.Errorf("expected condition was not met, test: %s, spec.datasource: %+v, want: %+v",
					testName, test.spec.DataSource, test.want)
			}