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verifier_test.go
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verifier_test.go
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package preimage
import (
"crypto/sha256"
"errors"
"fmt"
"reflect"
"testing"
"github.com/stretchr/testify/require"
)
func TestWithVerification(t *testing.T) {
validData := []byte{1, 2, 3, 4, 5, 6}
keccak256Key := Keccak256Key(Keccak256(validData))
sha256Key := Sha256Key(sha256.Sum256(validData))
anError := errors.New("boom")
validKeys := []Key{keccak256Key, sha256Key}
type testData struct {
name string
key Key
data []byte
err error
expectedErr error
expectedData []byte
}
tests := []testData{
{
name: "LocalKey NoVerification",
key: LocalIndexKey(1),
data: []byte{4, 3, 5, 7, 3},
expectedData: []byte{4, 3, 5, 7, 3},
},
{
name: "BlobKey NoVerification",
key: BlobKey([32]byte{1, 2, 3, 4}),
data: []byte{4, 3, 5, 7, 3},
expectedData: []byte{4, 3, 5, 7, 3},
},
{
name: "KZGPointEvaluationKey NoVerification",
key: PrecompileKey([32]byte{1, 2, 3, 4}),
data: []byte{4, 3, 5, 7, 3},
expectedData: []byte{4, 3, 5, 7, 3},
},
{
name: "UnknownKey",
key: invalidKey([32]byte{0xaa}),
data: []byte{},
expectedErr: ErrUnsupportedKeyType,
},
}
for _, key := range validKeys {
name := reflect.TypeOf(key).Name()
tests = append(tests,
testData{
name: fmt.Sprintf("%v-Valid", name),
key: key,
data: validData,
expectedData: validData,
},
testData{
name: fmt.Sprintf("%v-Error", name),
key: key,
data: validData,
err: anError,
expectedErr: anError,
},
testData{
name: fmt.Sprintf("%v-InvalidData", name),
key: key,
data: []byte{6, 7, 8},
expectedErr: ErrIncorrectData,
},
testData{
name: fmt.Sprintf("%v-EmptyData", name),
key: key,
data: []byte{},
expectedErr: ErrIncorrectData,
})
}
for _, test := range tests {
test := test
t.Run(test.name, func(t *testing.T) {
source := WithVerification(func(key [32]byte) ([]byte, error) {
return test.data, test.err
})
actual, err := source(test.key.PreimageKey())
require.ErrorIs(t, err, test.expectedErr)
require.Equal(t, test.expectedData, actual)
})
}
}
type invalidKey [32]byte
func (k invalidKey) PreimageKey() (out [32]byte) {
out = k // copy the source hash
out[0] = byte(254) // apply invalid prefix
return
}