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// Copyright 2024 The Tessera authors. All Rights Reserved.
//
// 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 parse_test
import (
"bytes"
"encoding/base64"
"testing"
"github.com/transparency-dev/tessera/internal/parse"
)
func TestCheckpointUnsafe(t *testing.T) {
testCases := []struct {
desc string
cp string
wantOrigin string
wantSize uint64
wantHash []byte
wantErr bool
}{
{
desc: "happy checkpoint",
cp: "original.example.com\n42\nqINS1GRFhWHwdkUeqLEoP4yEMkTBBzxBkGwGQlVlVcs=\n",
wantOrigin: "original.example.com",
wantSize: 42,
wantHash: mustDecodeB64(t, "qINS1GRFhWHwdkUeqLEoP4yEMkTBBzxBkGwGQlVlVcs="),
},
{
desc: "Negative size",
cp: "original.example.com\n-42\nqINS1GRFhWHwdkUeqLEoP4yEMkTBBzxBkGwGQlVlVcs=\n",
wantErr: true,
},
{
desc: "Bad hash",
cp: "original.example.com\n42\nthisisnotright\n",
wantErr: true,
},
{
desc: "Empty origin",
cp: "\n42\nqINS1GRFhWHwdkUeqLEoP4yEMkTBBzxBkGwGQlVlVcs=\n",
wantOrigin: "",
wantSize: 42,
wantHash: mustDecodeB64(t, "qINS1GRFhWHwdkUeqLEoP4yEMkTBBzxBkGwGQlVlVcs="),
},
{
desc: "No origin",
cp: "42\nqINS1GRFhWHwdkUeqLEoP4yEMkTBBzxBkGwGQlVlVcs=\n",
wantErr: true,
},
}
for _, tC := range testCases {
t.Run(tC.desc, func(t *testing.T) {
origin, size, hash, err := parse.CheckpointUnsafe([]byte(tC.cp))
if gotErr := err != nil; gotErr != tC.wantErr {
t.Fatalf("gotErr != wantErr (%t != %t): %v", gotErr, tC.wantErr, err)
}
if tC.wantErr {
return
}
if tC.wantOrigin != origin {
t.Errorf("origin: got != want (%v != %v)", origin, tC.wantOrigin)
}
if tC.wantSize != size {
t.Errorf("size : got != want (%v != %v)", size, tC.wantSize)
}
if !bytes.Equal(tC.wantHash, hash) {
t.Errorf("hash : got != want (%v != %v)", hash, tC.wantHash)
}
})
}
}
func mustDecodeB64(t *testing.T, encoded string) []byte {
t.Helper()
res, err := base64.StdEncoding.DecodeString(encoded)
if err != nil {
t.Fatal(err)
}
return res
}
func BenchmarkCheckpointUnsafe(b *testing.B) {
cpRaw := []byte("go.sum database tree\n31700353\nqINS1GRFhWHwdkUeqLEoP4yEMkTBBzxBkGwGQlVlVcs=\n\n— sum.golang.org Az3grnmrIUEDFqHzAElIQCPNoRFRAAdFo47fooyWKMHb89k11GJh5zHIfNCOBmwn/C3YI8oW9/C8DJ87F61QqspBYwM=")
for b.Loop() {
_, _, _, err := parse.CheckpointUnsafe(cpRaw)
if err != nil {
b.Error(err)
}
}
}
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