frostfs-api-go/pkg/checksum_test.go

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package pkg
import (
"crypto/rand"
"crypto/sha256"
"testing"
"github.com/nspcc-dev/neofs-api-go/v2/refs"
"github.com/stretchr/testify/require"
)
func randSHA256(t *testing.T) [sha256.Size]byte {
cSHA256 := [sha256.Size]byte{}
_, err := rand.Read(cSHA256[:])
require.NoError(t, err)
return cSHA256
}
func TestChecksum(t *testing.T) {
c := NewChecksum()
cSHA256 := [sha256.Size]byte{}
_, _ = rand.Read(cSHA256[:])
c.SetSHA256(cSHA256)
require.Equal(t, ChecksumSHA256, c.Type())
require.Equal(t, cSHA256[:], c.Sum())
cV2 := c.ToV2()
require.Equal(t, refs.SHA256, cV2.GetType())
require.Equal(t, cSHA256[:], cV2.GetSum())
cTZ := [64]byte{}
_, _ = rand.Read(cSHA256[:])
c.SetTillichZemor(cTZ)
require.Equal(t, ChecksumTZ, c.Type())
require.Equal(t, cTZ[:], c.Sum())
cV2 = c.ToV2()
require.Equal(t, refs.TillichZemor, cV2.GetType())
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))
}
func TestChecksumEncoding(t *testing.T) {
cs := NewChecksum()
cs.SetSHA256(randSHA256(t))
t.Run("binary", func(t *testing.T) {
data, err := cs.Marshal()
require.NoError(t, err)
c2 := NewChecksum()
require.NoError(t, c2.Unmarshal(data))
require.Equal(t, cs, c2)
})
t.Run("json", func(t *testing.T) {
data, err := cs.MarshalJSON()
require.NoError(t, err)
cs2 := NewChecksum()
require.NoError(t, cs2.UnmarshalJSON(data))
require.Equal(t, cs, cs2)
})
t.Run("string", func(t *testing.T) {
cs2 := NewChecksum()
require.NoError(t, cs2.Parse(cs.String()))
require.Equal(t, cs, cs2)
})
}