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//
// Copyright 2021 The Sigstore Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package remote
import (
"testing"
"github.com/google/go-containerregistry/pkg/name"
v1 "github.com/google/go-containerregistry/pkg/v1"
"github.com/google/go-containerregistry/pkg/v1/random"
"github.com/google/go-containerregistry/pkg/v1/remote"
)
func TestSignedImage(t *testing.T) {
ri := remote.Image
t.Cleanup(func() {
remoteImage = ri
})
wantLayers := int64(7)
remoteImage = func(_ name.Reference, _ ...remote.Option) (v1.Image, error) {
// Only called for signature images
return random.Image(300 /* byteSize */, wantLayers)
}
ref, err := name.ParseReference("gcr.io/distroless/static:nonroot")
if err != nil {
t.Fatalf("ParseRef() = %v", err)
}
si, err := SignedImage(ref)
if err != nil {
t.Fatalf("Signatures() = %v", err)
}
sigs, err := si.Signatures()
if err != nil {
t.Fatalf("Signatures() = %v", err)
}
if sl, err := sigs.Get(); err != nil {
t.Errorf("Get() = %v", err)
} else if got := int64(len(sl)); got != wantLayers {
t.Errorf("len(Get()) = %d, wanted %d", got, wantLayers)
}
atts, err := si.Attestations()
if err != nil {
t.Fatalf("Signatures() = %v", err)
}
if al, err := atts.Get(); err != nil {
t.Errorf("Get() = %v", err)
} else if got := int64(len(al)); got != wantLayers {
t.Errorf("len(Get()) = %d, wanted %d", got, wantLayers)
}
}
func TestSignedImageWithAttachment(t *testing.T) {
ri := remote.Image
t.Cleanup(func() {
remoteImage = ri
})
wantLayers := int64(1) // File must have a single layer
remoteImage = func(_ name.Reference, _ ...remote.Option) (v1.Image, error) {
// Only called for signature images
return random.Image(300 /* byteSize */, wantLayers)
}
ref, err := name.ParseReference("gcr.io/distroless/static:nonroot")
if err != nil {
t.Fatalf("ParseRef() = %v", err)
}
si, err := SignedImage(ref)
if err != nil {
t.Fatalf("Signatures() = %v", err)
}
file, err := si.Attachment("sbom")
if err != nil {
t.Fatalf("Signatures() = %v", err)
}
payload, err := file.Payload()
if err != nil {
t.Errorf("Payload() = %v", err)
}
// We check greater than because it's wrapped in a tarball with `random.Layer`
if len(payload) < 300 {
t.Errorf("Payload() = %d bytes, wanted %d", len(payload), 300)
}
}
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