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[#140] sdk: Implement checksum comparison function

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Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
This commit is contained in:
Leonard Lyubich 2020-09-11 18:18:02 +03:00 committed by Stanislav Bogatyrev
parent 6ce70d4a18
commit 5473b4ef95
2 changed files with 25 additions and 0 deletions
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5
pkg/checksum.go
View file

@ -1,6 +1,7 @@
package pkg package pkg
import ( import (
"bytes"
"crypto/sha256" "crypto/sha256"
"github.com/nspcc-dev/neofs-api-go/v2/refs" "github.com/nspcc-dev/neofs-api-go/v2/refs"
@ -72,3 +73,7 @@ func (c *Checksum) SetTillichZemor(v [64]byte) {
func (c *Checksum) ToV2() *refs.Checksum { func (c *Checksum) ToV2() *refs.Checksum {
return (*refs.Checksum)(c) return (*refs.Checksum)(c)
} }
func EqualChecksums(cs1, cs2 *Checksum) bool {
return cs1.GetType() == cs2.GetType() && bytes.Equal(cs1.GetSum(), cs2.GetSum())
}

20
pkg/checksum_test.go
View file

@ -38,3 +38,23 @@ func TestChecksum(t *testing.T) {
require.Equal(t, refs.TillichZemor, cV2.GetType()) require.Equal(t, refs.TillichZemor, cV2.GetType())
require.Equal(t, cTZ[:], cV2.GetSum()) require.Equal(t, cTZ[:], cV2.GetSum())
} }
func TestEqualChecksums(t *testing.T) {
require.True(t, EqualChecksums(nil, nil))
csSHA := [sha256.Size]byte{}
_, _ = rand.Read(csSHA[:])
cs1 := NewChecksum()
cs1.SetSHA256(csSHA)
cs2 := NewChecksum()
cs2.SetSHA256(csSHA)
require.True(t, EqualChecksums(cs1, cs2))
csSHA[0]++
cs2.SetSHA256(csSHA)
require.False(t, EqualChecksums(cs1, cs2))
}