You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: metadata_test.go
    path of file: ./repos/juju/caas/kubernetes/provider/storage
    
    the code of the file until where you have to start completion: // Copyright 2022 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.

package storage_test

import (
	gc "gopkg.in/check.v1"
	storagev1 "k8s.io/api/storage/v1"
	meta "k8s.io/apimachinery/pkg/apis/meta/v1"

	"github.com/juju/juju/caas/kubernetes/provider/storage"
)

type metadataSuite struct{}

var _ = gc.Suite(&metadataSuite{})

func (*metadataSuite) TestPreferredStorageAny(c *gc.C) {
	tests := []struct {
		Name         string
		StorageClass *storagev1.StorageClass
		Result       bool
	}{
		{
			Name: "Test Any Storage Class",
			StorageClass: &storagev1.StorageClass{
				ObjectMeta: meta.ObjectMeta{
					Name: "test1",
				},
			},
			Result: true,
		},
		{
			Name:         "Test Any Storage Class returns false for nil",
			StorageClass: nil,
			Result:       false,
		},
	}

	for _, test := range tests {
		c.Logf("running test %s", test.Name)
		any := storage.PreferredStorageAny{}
		c.Assert(any.Matches(test.StorageClass), gc.Equals, test.Result)
	}
}

func (*metadataSuite) TestPreferredStorageNominated(c *gc.C) {
    
func (*metadataSuite) TestPreferredStorageWorkloadAnnotation(c *gc.C) {
	tests := []struct {
		Name         string
		StorageClass *storagev1.StorageClass
		Result       bool
	}{
		{
			Name: "Test operator storage annotation matches",
			StorageClass: &storagev1.StorageClass{
				ObjectMeta: meta.ObjectMeta{
					Name: "test1",
					Annotations: map[string]string{
						"juju.is/workload-storage": "true",
					},
				},
			},
			Result: true,
		},
		{
			Name: "Test operator storage doesn't match bad value",
			StorageClass: &storagev1.StorageClass{
				ObjectMeta: meta.ObjectMeta{
					Name: "test1",
					Annotations: map[string]string{
						"juju.is/workload-storage": "false",
					},
				},
			},
			Result: false,
		},
		{
			Name: "Test operator storage doesn't match operator storage",
			StorageClass: &storagev1.StorageClass{
				ObjectMeta: meta.ObjectMeta{
					Name: "test1",
					Annotations: map[string]string{
						"juju.is/operator-storage": "true",
					},
				},
			},
			Result: false,
		},
	}

	for _, test := range tests {
		c.Logf("running test %s", test.Name)
		annotation := storage.PreferredStorageWorkloadAnnotation{}
		c.Assert(annotation.Matches(test.StorageClass), gc.Equals, test.Result)
	}
}