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: rekor_test.go
    path of file: ./repos/trivy/pkg/attestation/sbom
    
    the code of the file until where you have to start completion: package sbom_test

import (
	"context"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"

	"github.com/aquasecurity/trivy/pkg/attestation/sbom"
	"github.com/aquasecurity/trivy/pkg/log"
	"github.com/aquasecurity/trivy/pkg/rekortest"
)

func TestRekor_RetrieveSBOM(t *testing.T) {
	tests := []struct {
		name    string
		digest  string
		want    string
		wantErr string
	}{
		{
			name:   "happy path",
			digest: "sha256:5891b5b522d5df086d0ff0b110fbd9d21bb4fc7163af34d08286a2e846f6be03",
			want:   `{"bomFormat":"CycloneDX","specVersion":"1.5","version":2}`,
		},
		{
			name:    "404",
			digest:  "sha256:unknown",
			wantErr: "failed to search",
		},
	}

	require.NoError(t, log.InitLogger(false, true))
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			ts := rekorte
    
func TestRekor_RetrieveSBOM(t *testing.T) {
	tests := []struct {
		name    string
		digest  string
		want    string
		wantErr string
	}{
		{
			name:   "happy path",
			digest: "sha256:5891b5b522d5df086d0ff0b110fbd9d21bb4fc7163af34d08286a2e846f6be03",
			want:   `{"bomFormat":"CycloneDX","specVersion":"1.5","version":2}`,
		},
		{
			name:    "404",
			digest:  "sha256:unknown",
			wantErr: "failed to search",
		},
	}

	require.NoError(t, log.InitLogger(false, true))
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			ts := rekortest.NewServer(t)
			defer ts.Close()

			// Set the testing URL
			rc, err := sbom.NewRekor(ts.URL())
			require.NoError(t, err)

			got, err := rc.RetrieveSBOM(context.Background(), tt.digest)
			if tt.wantErr != "" {
				assert.ErrorContains(t, err, tt.wantErr)
				return
			}
			require.NoError(t, err, tt.name)
			assert.Equal(t, tt.want, string(got))
		})
	}
}