Add mirror tests

pkg/mirror/mirror_test.go

@@ -0,0 +1,61 @@
+package mirror
+
+import (
+	"fmt"
+	"net/http/httptest"
+	"net/url"
+	"path/filepath"
+	"testing"
+
+	"github.com/docker/attest/internal/test"
+	"github.com/docker/attest/pkg/oci"
+	"github.com/google/go-containerregistry/pkg/registry"
+	"github.com/google/go-containerregistry/pkg/v1/empty"
+	"github.com/stretchr/testify/require"
+)
+
+func TestSavingIndex(t *testing.T) {
+	UnsignedTestImage := filepath.Join("..", "..", "test", "testdata", "unsigned-test-image")
+	outputLayout := test.CreateTempDir(t, "", "mirror-test")
+	attIdx, err := oci.IndexFromPath(UnsignedTestImage)
+	require.NoError(t, err)
+
+	server := httptest.NewServer(registry.New(registry.WithReferrersSupport(true)))
+	defer server.Close()
+
+	u, err := url.Parse(server.URL)
+	require.NoError(t, err)
+
+	indexName := fmt.Sprintf("%s/repo:root", u.Host)
+	output, err := oci.ParseImageSpecs(indexName)
+	require.NoError(t, err)
+	err = SaveIndex(output, attIdx.Index, indexName)
+	require.NoError(t, err)
+
+	ociOutput, err := oci.ParseImageSpecs("oci://" + outputLayout)
+	err = SaveIndex(ociOutput, attIdx.Index, indexName)
+	require.NoError(t, err)
+}
+
+func TestSavingImage(t *testing.T) {
+
+	outputLayout := test.CreateTempDir(t, "", "mirror-test")
+
+	img := empty.Image
+
+	server := httptest.NewServer(registry.New(registry.WithReferrersSupport(true)))
+	defer server.Close()
+
+	u, err := url.Parse(server.URL)
+	require.NoError(t, err)
+
+	indexName := fmt.Sprintf("%s/repo:root", u.Host)
+	output, err := oci.ParseImageSpec(indexName)
+	require.NoError(t, err)
+	err = SaveImage(output, img, indexName)
+	require.NoError(t, err)
+
+	ociOutput, err := oci.ParseImageSpec("oci://" + outputLayout)
+	err = SaveImage(ociOutput, img, indexName)
+	require.NoError(t, err)
+}