mirror of
https://source.quilibrium.com/quilibrium/ceremonyclient.git
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63 lines
1.2 KiB
Go
63 lines
1.2 KiB
Go
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//
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// Copyright Coinbase, Inc. All Rights Reserved.
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//
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// SPDX-License-Identifier: Apache-2.0
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//
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package internal
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import (
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"bytes"
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestByteSub(t *testing.T) {
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f := bytes.Repeat([]byte{0xFF}, 32)
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ByteSub(f)
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require.Equal(t, f[0], byte(0xFE))
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for i := 1; i < len(f); i++ {
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require.Equal(t, f[i], byte(0xFF))
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}
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ByteSub(f)
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require.Equal(t, f[0], byte(0xFD))
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for i := 1; i < len(f); i++ {
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require.Equal(t, f[i], byte(0xFF))
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}
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f[0] = 0x2
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ByteSub(f)
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for i := 1; i < len(f); i++ {
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require.Equal(t, f[i], byte(0xFF))
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}
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ByteSub(f)
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require.Equal(t, f[0], byte(0xFF))
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require.Equal(t, f[1], byte(0xFE))
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for i := 2; i < len(f); i++ {
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require.Equal(t, f[i], byte(0xFF))
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}
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ByteSub(f)
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require.Equal(t, f[0], byte(0xFE))
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require.Equal(t, f[1], byte(0xFE))
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for i := 2; i < len(f); i++ {
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require.Equal(t, f[i], byte(0xFF))
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}
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f[0] = 1
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f[1] = 1
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ByteSub(f)
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require.Equal(t, f[0], byte(0xFF))
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require.Equal(t, f[1], byte(0xFF))
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require.Equal(t, f[2], byte(0xFE))
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for i := 3; i < len(f); i++ {
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require.Equal(t, f[i], byte(0xFF))
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}
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}
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func TestByteSubAll1(t *testing.T) {
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f := bytes.Repeat([]byte{0x1}, 32)
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ByteSub(f)
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for i := 0; i < len(f); i++ {
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require.Equal(t, f[i], byte(0xFF))
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}
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}
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