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package gatt
import (
"bytes"
"testing"
)
func TestUUID16(t *testing.T) {
if want, got := (UUID{[]byte{0x00, 0x18}}), UUID16(0x1800); !got.Equal(want) {
t.Errorf("UUID16: got %x, want %x", got, want)
}
}
func TestReverse(t *testing.T) {
cases := []struct {
fwd []byte
back []byte
}{
{fwd: []byte{0, 1}, back: []byte{1, 0}},
{fwd: []byte{0, 1, 2}, back: []byte{2, 1, 0}},
{fwd: []byte{0, 1, 2, 3}, back: []byte{3, 2, 1, 0}},
{
fwd: []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
back: []byte{15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0},
},
}
for _, tt := range cases {
got := reverse(tt.fwd)
if !bytes.Equal(got, tt.back) {
t.Errorf("reverse(%x): got %x want %x", tt.fwd, got, tt.back)
}
u := UUID{tt.fwd}
got = reverse(u.b)
if !bytes.Equal(got, tt.back) {
t.Errorf("UUID.reverse(%x): got %x want %x", tt.fwd, got, tt.back)
}
}
}
func BenchmarkReverseBytes16(b *testing.B) {
u := UUID{make([]byte, 2)}
for i := 0; i < b.N; i++ {
reverse(u.b)
}
}
func BenchmarkReverseBytes128(b *testing.B) {
u := UUID{make([]byte, 16)}
for i := 0; i < b.N; i++ {
reverse(u.b)
}
}
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