40 lines
1.4 KiB
Go
40 lines
1.4 KiB
Go
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// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package secp256k1
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import (
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"bytes"
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"encoding/hex"
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"math/big"
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"testing"
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)
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func TestReadBits(t *testing.T) {
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check := func(input string) {
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want, _ := hex.DecodeString(input)
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int, _ := new(big.Int).SetString(input, 16)
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buf := make([]byte, len(want))
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readBits(buf, int)
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if !bytes.Equal(buf, want) {
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t.Errorf("have: %x\nwant: %x", buf, want)
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}
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}
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check("000000000000000000000000000000000000000000000000000000FEFCF3F8F0")
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check("0000000000012345000000000000000000000000000000000000FEFCF3F8F0")
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check("18F8F8F1000111000110011100222004330052300000000000000000FEFCF3F8F0")
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}
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