neoneo-go/pkg/util/array_test.go
Evgenii Stratonikov 24bb66e606 util: fix a bug with not copying slice of len=1 in ArrayReverse
ArrayReverse copies it's argument only if it's len is > 1.
It needs to be consistent in all cases.
2020-02-06 12:15:35 +03:00

45 lines
716 B
Go

package util
import (
"testing"
"github.com/stretchr/testify/require"
)
var testCases = []struct {
arr []byte
rev []byte
}{
{
arr: []byte{},
rev: []byte{},
},
{
arr: []byte{0x01},
rev: []byte{0x01},
},
{
arr: []byte{0x01, 0x02, 0x03, 0x04},
rev: []byte{0x04, 0x03, 0x02, 0x01},
},
{
arr: []byte{0x01, 0x02, 0x03, 0x04, 0x05},
rev: []byte{0x05, 0x04, 0x03, 0x02, 0x01},
},
}
func TestArrayReverse(t *testing.T) {
for _, tc := range testCases {
arg := make([]byte, len(tc.arr))
copy(arg, tc.arr)
have := ArrayReverse(arg)
require.Equal(t, tc.rev, have)
// test that argument was copied
for i := range have {
have[i] = ^have[i]
}
require.Equal(t, tc.arr, arg)
}
}