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https://github.com/nspcc-dev/neo-go.git
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24bb66e606
ArrayReverse copies it's argument only if it's len is > 1. It needs to be consistent in all cases.
45 lines
716 B
Go
45 lines
716 B
Go
package util
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import (
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"testing"
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"github.com/stretchr/testify/require"
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)
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var testCases = []struct {
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arr []byte
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rev []byte
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}{
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{
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arr: []byte{},
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rev: []byte{},
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},
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{
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arr: []byte{0x01},
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rev: []byte{0x01},
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},
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{
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arr: []byte{0x01, 0x02, 0x03, 0x04},
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rev: []byte{0x04, 0x03, 0x02, 0x01},
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},
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{
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arr: []byte{0x01, 0x02, 0x03, 0x04, 0x05},
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rev: []byte{0x05, 0x04, 0x03, 0x02, 0x01},
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},
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}
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func TestArrayReverse(t *testing.T) {
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for _, tc := range testCases {
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arg := make([]byte, len(tc.arr))
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copy(arg, tc.arr)
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have := ArrayReverse(arg)
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require.Equal(t, tc.rev, have)
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// test that argument was copied
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for i := range have {
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have[i] = ^have[i]
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}
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require.Equal(t, tc.arr, arg)
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}
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}
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