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package poseidon
import (
"encoding/hex"
"math/big"
"testing"
"github.com/iden3/go-iden3-crypto/utils"
"github.com/stretchr/testify/assert"
"golang.org/x/crypto/blake2b"
)
func TestBlake2bVersion(t *testing.T) {
h := blake2b.Sum256([]byte("poseidon_constants"))
assert.Equal(t, "e57ba154fb2c47811dc1a2369b27e25a44915b4e4ece4eb8ec74850cb78e01b1", hex.EncodeToString(h[:]))
}
func TestPoseidonHash(t *testing.T) {
b0 := big.NewInt(0)
b1 := big.NewInt(1)
b2 := big.NewInt(2)
h, err := Hash([]*big.Int{b1})
assert.Nil(t, err)
assert.Equal(t, "11043376183861534927536506085090418075369306574649619885724436265926427398571", h.String())
h, err = Hash([]*big.Int{b1, b2})
assert.Nil(t, err)
assert.Equal(t, "17117985411748610629288516079940078114952304104811071254131751175361957805920", h.String())
h, err = Hash([]*big.Int{b1, b2, b0, b0, b0})
assert.Nil(t, err)
assert.Equal(t, "3975478831357328722254985704342968745327876719981393787143845259590563829094", h.String())
h, err = Hash([]*big.Int{b1, b2, b0, b0, b0, b0})
assert.Nil(t, err)
assert.Equal(t, "19772360636270345724087386688434825760738403416279047262510528378903625000110", h.String())
b3 := big.NewInt(3)
b4 := big.NewInt(4)
h, err = Hash([]*big.Int{b3, b4, b0, b0, b0})
assert.Nil(t, err)
assert.Equal(t, "3181200837746671699652342497997860344148947482942465819251904554707352676086", h.String())
h, err = Hash([]*big.Int{b3, b4, b0, b0, b0, b0})
assert.Nil(t, err)
assert.Equal(t, "8386348873272147968934270337233829407378789978142456170950021426339096575008", h.String())
b5 := big.NewInt(5)
b6 := big.NewInt(6)
h, err = Hash([]*big.Int{b1, b2, b3, b4, b5, b6})
assert.Nil(t, err)
assert.Equal(t, "5202465217520500374834597824465244016759843635092906214933648999760272616044", h.String())
}
func TestErrorInputs(t *testing.T) {
b0 := big.NewInt(0)
b1 := big.NewInt(1)
b2 := big.NewInt(2)
_, err := Hash([]*big.Int{b1, b2, b0, b0, b0, b0})
assert.Nil(t, err)
_, err = Hash([]*big.Int{b1, b2, b0, b0, b0, b0, b0})
assert.NotNil(t, err)
assert.Equal(t, "invalid inputs length 7, max 7", err.Error())
_, err = Hash([]*big.Int{b1, b2, b0, b0, b0, b0, b0, b0})
assert.NotNil(t, err)
assert.Equal(t, "invalid inputs length 8, max 7", err.Error())
}
func BenchmarkPoseidonHash(b *testing.B) {
b0 := big.NewInt(0)
b1 := utils.NewIntFromString("12242166908188651009877250812424843524687801523336557272219921456462821518061")
b2 := utils.NewIntFromString("12242166908188651009877250812424843524687801523336557272219921456462821518061")
bigArray4 := []*big.Int{b1, b2, b0, b0, b0, b0}
for i := 0; i < b.N; i++ {
Hash(bigArray4) //nolint:errcheck
}
}