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package crypto11
import (
"testing"
)
func TestULongMasking(t *testing.T) {
ulongData := uint(0x33221100ddccbbaa)
ulongSlice := ulongToBytes(ulongData)
// Build an slice that is longer than the size of a ulong
extraLongSlice := append(ulongSlice, ulongSlice...)
tests := []struct {
slice []uint8
expected uint
}{
{ulongSlice[0:0], 0},
{ulongSlice[0:1], 0xaa},
{ulongSlice[0:2], 0xbbaa},
{ulongSlice[0:3], 0xccbbaa},
{ulongSlice[0:4], 0xddccbbaa},
{ulongSlice[0:5], 0x00ddccbbaa},
{ulongSlice[0:6], 0x1100ddccbbaa},
{ulongSlice[0:7], 0x221100ddccbbaa},
{ulongSlice[0:8], 0x33221100ddccbbaa},
{extraLongSlice, 0x33221100ddccbbaa},
}
for _, test := range tests {
got := bytesToUlong(test.slice)
if test.expected != got {
t.Errorf("conversion failed: 0x%X != 0x%X", test.expected, got)
}
}
}
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