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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 payload
import (
"encoding/json"
"testing"
"github.com/go-test/deep"
"github.com/google/go-containerregistry/pkg/name"
)
const validDigest = "sha256:d34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33f"
func mustParseDigest(t *testing.T, digestStr string) name.Digest {
t.Helper()
digest, err := name.NewDigest(digestStr)
if err != nil {
t.Fatalf("could not parse digest %q: %v", digestStr, err)
}
return digest
}
func TestMarshalCosign(t *testing.T) {
t.Parallel()
testCases := []struct {
desc string
imgPayload Cosign
expected string
}{
{
desc: "no claims",
imgPayload: Cosign{
Image: mustParseDigest(t, "example.com/test/image@"+validDigest),
},
expected: `{"critical":{"identity":{"docker-reference":"example.com/test/image"},"image":{"docker-manifest-digest":"sha256:d34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33f"},"type":"cosign container image signature"},"optional":null}`,
},
{
desc: "standard atomic signature",
imgPayload: Cosign{
Image: mustParseDigest(t, "example.com/atomic/test/image@"+validDigest),
Annotations: map[string]interface{}{
"creator": "atomic",
"timestamp": 1458239713,
},
},
expected: `{"critical":{"identity":{"docker-reference":"example.com/atomic/test/image"},"image":{"docker-manifest-digest":"sha256:d34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33f"},"type":"cosign container image signature"},"optional":{"creator":"atomic","timestamp":1458239713}}`,
},
{
desc: "arbitrary claims",
imgPayload: Cosign{
Image: mustParseDigest(t, "example.com/cosign/test/image@"+validDigest),
Annotations: map[string]interface{}{
"creator": "anyone",
"some_struct": map[string]interface{}{
"foo": "bar",
"false": true,
"nothing": nil,
},
"CamelCase WithSpace": 8.314,
},
},
expected: `{"critical":{"identity":{"docker-reference":"example.com/cosign/test/image"},"image":{"docker-manifest-digest":"sha256:d34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33f"},"type":"cosign container image signature"},"optional":{"CamelCase WithSpace":8.314,"creator":"anyone","some_struct":{"false":true,"foo":"bar","nothing":null}}}`,
},
{
desc: "custom identity",
imgPayload: Cosign{
Image: mustParseDigest(t, "example.com/test/image@"+validDigest),
ClaimedIdentity: "docker.io/library/test:1.2.3",
},
expected: `{"critical":{"identity":{"docker-reference":"docker.io/library/test:1.2.3"},"image":{"docker-manifest-digest":"sha256:d34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33f"},"type":"cosign container image signature"},"optional":null}`,
},
}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
tc := tc
t.Parallel()
payload, err := json.Marshal(tc.imgPayload)
if err != nil {
t.Fatalf("json.Marshal returned error: %v", err)
}
if tc.expected != string(payload) {
t.Errorf("marshaled payload was %q, wanted %q", string(payload), tc.expected)
}
})
}
}
func TestUnmarshalCosign(t *testing.T) {
t.Parallel()
testCases := []struct {
desc string
payload string
expected Cosign
expectErr bool
}{
{
desc: "no claims",
payload: `{"critical":{"identity":{"docker-reference":"example.com/test/image"},"image":{"docker-manifest-digest":"sha256:d34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33f"},"type":"cosign container image signature"},"optional":null}`,
expected: Cosign{
Image: mustParseDigest(t, "example.com/test/image@"+validDigest),
ClaimedIdentity: "example.com/test/image",
},
},
{
desc: "arbitrary claims",
payload: `{"critical":{"identity":{"docker-reference":"example.com/cosign/test/image"},"image":{"docker-manifest-digest":"sha256:d34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33f"},"type":"cosign container image signature"},"optional":{"CamelCase WithSpace":8.314,"creator":"anyone","some_struct":{"false":true,"foo":"bar","nothing":null}}}`,
expected: Cosign{
Image: mustParseDigest(t, "example.com/cosign/test/image@"+validDigest),
ClaimedIdentity: "example.com/cosign/test/image",
Annotations: map[string]interface{}{
"creator": "anyone",
"some_struct": map[string]interface{}{
"foo": "bar",
"false": true,
"nothing": nil,
},
"CamelCase WithSpace": 8.314,
},
},
},
{
desc: "unknown type",
payload: `{"critical":{"identity":{"docker-reference":"example.com/atomic/test/image"},"image":{"docker-manifest-digest":"sha256:d34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33fd34db33f"},"type":"atomic container signature"},"optional":{}}`,
expectErr: true,
},
}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
tc := tc
t.Parallel()
var imgPayload Cosign
err := json.Unmarshal([]byte(tc.payload), &imgPayload)
if err != nil {
if !tc.expectErr {
t.Fatalf("json.Unmarshal unexpectedly returned an error: %v", err)
}
return // operation failed successfully
}
if tc.expectErr {
t.Fatalf("json.Unmarshal returned %v, expected an error", imgPayload)
}
if diff := deep.Equal(tc.expected, imgPayload); diff != nil {
t.Errorf("Cosign unmarshalled incorrectly: %v", diff)
}
})
}
}
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