Silence a "potentially unused parameter" warning

configBlobImageSource.f is only called if the digest is exactly one value, so the function doesn't need to use it (and none of them do). So, remove it; this also drops a recently-introduced warning in VS Code. Should not change (test) behavior. Signed-off-by: Miloslav Trmač <[email protected]>
containers · Jul 20, 2022 · f4febfc · f4febfc
1 parent 81eae1e
commit f4febfc
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Showing 2 changed files with 14 additions and 15 deletions.
diff --git a/internal/image/docker_schema2_test.go b/internal/image/docker_schema2_test.go
@@ -133,40 +133,40 @@ func TestManifestSchema2ConfigInfo(t *testing.T) {
 // configBlobImageSource allows testing various GetBlob behaviors in .ConfigBlob()
 type configBlobImageSource struct {
 	mocks.ForbiddenImageSource // We inherit almost all of the methods, which just panic()
-	f                          func(digest digest.Digest) (io.ReadCloser, int64, error)
+	f                          func() (io.ReadCloser, int64, error)
 }
 
 func (f configBlobImageSource) GetBlob(ctx context.Context, info types.BlobInfo, _ types.BlobInfoCache) (io.ReadCloser, int64, error) {
 	if info.Digest.String() != "sha256:9ca4bda0a6b3727a6ffcc43e981cad0f24e2ec79d338f6ba325b4dfd0756fb8f" {
 		panic("Unexpected digest in GetBlob")
 	}
-	return f.f(info.Digest)
+	return f.f()
 }
 
 func TestManifestSchema2ConfigBlob(t *testing.T) {
 	realConfigJSON, err := os.ReadFile("fixtures/schema2-config.json")
 	require.NoError(t, err)
 
 	for _, c := range []struct {
-		cbISfn func(digest digest.Digest) (io.ReadCloser, int64, error)
+		cbISfn func() (io.ReadCloser, int64, error)
 		blob   []byte
 	}{
 		// Success
-		{func(digest digest.Digest) (io.ReadCloser, int64, error) {
+		{func() (io.ReadCloser, int64, error) {
 			return io.NopCloser(bytes.NewReader(realConfigJSON)), int64(len(realConfigJSON)), nil
 		}, realConfigJSON},
 		// Various kinds of failures
 		{nil, nil},
-		{func(digest digest.Digest) (io.ReadCloser, int64, error) {
+		{func() (io.ReadCloser, int64, error) {
 			return nil, -1, errors.New("Error returned from GetBlob")
 		}, nil},
-		{func(digest digest.Digest) (io.ReadCloser, int64, error) {
+		{func() (io.ReadCloser, int64, error) {
 			reader, writer := io.Pipe()
 			err = writer.CloseWithError(errors.New("Expected error reading input in ConfigBlob"))
 			assert.NoError(t, err)
 			return reader, 1, nil
 		}, nil},
-		{func(digest digest.Digest) (io.ReadCloser, int64, error) {
+		{func() (io.ReadCloser, int64, error) {
 			nonmatchingJSON := []byte("This does not match ConfigDescriptor.Digest")
 			return io.NopCloser(bytes.NewReader(nonmatchingJSON)), int64(len(nonmatchingJSON)), nil
 		}, nil},
@@ -330,7 +330,7 @@ func newSchema2ImageSource(t *testing.T, dockerRef string) *schema2ImageSource {
 
 	return &schema2ImageSource{
 		configBlobImageSource: configBlobImageSource{
-			f: func(digest digest.Digest) (io.ReadCloser, int64, error) {
+			f: func() (io.ReadCloser, int64, error) {
 				return io.NopCloser(bytes.NewReader(realConfigJSON)), int64(len(realConfigJSON)), nil
 			},
 		},

diff --git a/internal/image/oci_test.go b/internal/image/oci_test.go
@@ -15,7 +15,6 @@ import (
 	"github.com/containers/image/v5/internal/testing/mocks"
 	"github.com/containers/image/v5/manifest"
 	"github.com/containers/image/v5/types"
-	"github.com/opencontainers/go-digest"
 	imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -142,25 +141,25 @@ func TestManifestOCI1ConfigBlob(t *testing.T) {
 	require.NoError(t, err)
 
 	for _, c := range []struct {
-		cbISfn func(digest digest.Digest) (io.ReadCloser, int64, error)
+		cbISfn func() (io.ReadCloser, int64, error)
 		blob   []byte
 	}{
 		// Success
-		{func(digest digest.Digest) (io.ReadCloser, int64, error) {
+		{func() (io.ReadCloser, int64, error) {
 			return io.NopCloser(bytes.NewReader(realConfigJSON)), int64(len(realConfigJSON)), nil
 		}, realConfigJSON},
 		// Various kinds of failures
 		{nil, nil},
-		{func(digest digest.Digest) (io.ReadCloser, int64, error) {
+		{func() (io.ReadCloser, int64, error) {
 			return nil, -1, errors.New("Error returned from GetBlob")
 		}, nil},
-		{func(digest digest.Digest) (io.ReadCloser, int64, error) {
+		{func() (io.ReadCloser, int64, error) {
 			reader, writer := io.Pipe()
 			err = writer.CloseWithError(errors.New("Expected error reading input in ConfigBlob"))
 			require.NoError(t, err)
 			return reader, 1, nil
 		}, nil},
-		{func(digest digest.Digest) (io.ReadCloser, int64, error) {
+		{func() (io.ReadCloser, int64, error) {
 			nonmatchingJSON := []byte("This does not match ConfigDescriptor.Digest")
 			return io.NopCloser(bytes.NewReader(nonmatchingJSON)), int64(len(nonmatchingJSON)), nil
 		}, nil},
@@ -345,7 +344,7 @@ func newOCI1ImageSource(t *testing.T, dockerRef string) *oci1ImageSource {
 
 	return &oci1ImageSource{
 		configBlobImageSource: configBlobImageSource{
-			f: func(digest digest.Digest) (io.ReadCloser, int64, error) {
+			f: func() (io.ReadCloser, int64, error) {
 				return io.NopCloser(bytes.NewReader(realConfigJSON)), int64(len(realConfigJSON)), nil
 			},
 		},