refactor: fix import cycle for mock resolver

internal/test/test.go

@@ -6,6 +6,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"os"
+	"path/filepath"
 	"strings"
 	"testing"
 
@@ -45,6 +46,14 @@ func CreateTempDir(t *testing.T, dir, pattern string) string {
 	return tempDir
 }
 
+func GetMockSigner(_ context.Context) (dsse.SignerVerifier, error) {
+	priv, err := os.ReadFile(filepath.Join("..", "..", "test", "testdata", "test-signing-key.pem"))
+	if err != nil {
+		return nil, err
+	}
+	return signerverifier.LoadKeyPair(priv)
+}
+
 func Setup(t *testing.T) (context.Context, dsse.SignerVerifier) {
 	var tl tlog.TL
 	if UseMockTL {

pkg/attest/verify_test.go

@@ -34,7 +34,7 @@ func TestVerifyAttestations(t *testing.T) {
 	env := new(attestation.Envelope)
 	err = json.Unmarshal(ex, env)
 	assert.NoError(t, err)
-	resolver := &test.MockResolver{
+	resolver := &oci.MockResolver{
 		Envs: []*attestation.Envelope{env},
 	}
 

pkg/mirror/mirror_test.go

@@ -96,9 +96,9 @@ func TestSavingReferrers(t *testing.T) {
 	err = SaveReferrers(manifest, output)
 	require.NoError(t, err)
 
-	reg := &test.MockRegistryResolver{
+	reg := &oci.MockRegistryResolver{
 		Subject:      subject,
-		MockResolver: &test.MockResolver{},
+		MockResolver: &oci.MockResolver{},
 		ImageNameStr: indexName,
 	}
 	require.NoError(t, err)

pkg/oci/mock.go

@@ -1,15 +1,10 @@
-package test
+package oci
 
 import (
 	"context"
-	"os"
-	"path/filepath"
 
 	"github.com/docker/attest/pkg/attestation"
-	"github.com/docker/attest/pkg/oci"
-	"github.com/docker/attest/pkg/signerverifier"
 	v1 "github.com/google/go-containerregistry/pkg/v1"
-	"github.com/secure-systems-lab/go-securesystemslib/dsse"
 )
 
 type MockResolver struct {
@@ -37,7 +32,7 @@ func (r MockResolver) ImageDescriptor(_ context.Context) (*v1.Descriptor, error)
 }
 
 func (r MockResolver) ImagePlatform(_ context.Context) (*v1.Platform, error) {
-	return oci.ParsePlatform("linux/amd64")
+	return ParsePlatform("linux/amd64")
 }
 
 type MockRegistryResolver struct {
@@ -53,11 +48,3 @@ func (r *MockRegistryResolver) ImageDescriptor(_ context.Context) (*v1.Descripto
 func (r *MockRegistryResolver) ImageName(_ context.Context) (string, error) {
 	return r.ImageNameStr, nil
 }
-
-func GetMockSigner(_ context.Context) (dsse.SignerVerifier, error) {
-	priv, err := os.ReadFile(filepath.Join("..", "..", "test", "testdata", "test-signing-key.pem"))
-	if err != nil {
-		return nil, err
-	}
-	return signerverifier.LoadKeyPair(priv)
-}

pkg/policy/policy_test.go

@@ -38,7 +38,7 @@ func TestRegoEvaluator_Evaluate(t *testing.T) {
 
 	re := policy.NewRegoEvaluator(true)
 
-	defaultResolver := test.MockResolver{
+	defaultResolver := oci.MockResolver{
 		Envs: []*attestation.Envelope{loadAttestation(t, ExampleAttestation)},
 	}