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|
package binstruct_test
import (
"testing"
"github.com/stretchr/testify/assert"
"lukeshu.com/btrfs-tools/pkg/binstruct"
)
func TestSmoke(t *testing.T) {
type UUID [16]byte
type PhysicalAddr int64
type DevItem struct {
DeviceID uint64 `bin:"off=0, siz=8, desc=device id"`
NumBytes uint64 `bin:"off=8, siz=8, desc=number of bytes"`
NumBytesUsed uint64 `bin:"off=10, siz=8, desc=number of bytes used"`
IOOptimalAlign uint32 `bin:"off=18, siz=4, desc=optimal I/O align"`
IOOptimalWidth uint32 `bin:"off=1c, siz=4, desc=optimal I/O width"`
IOMinSize uint32 `bin:"off=20, siz=4, desc=minimal I/O size (sector size)"`
Type uint64 `bin:"off=24, siz=8, desc=type"`
Generation uint64 `bin:"off=2c, siz=8, desc=generation"`
StartOffset uint64 `bin:"off=34, siz=8, desc=start offset"`
DevGroup uint32 `bin:"off=3c, siz=4, desc=dev group"`
SeekSpeed uint8 `bin:"off=40, siz=1, desc=seek speed"`
Bandwidth uint8 `bin:"off=41, siz=1, desc=bandwidth"`
DevUUID UUID `bin:"off=42, siz=10, desc=device UUID"`
FSUUID UUID `bin:"off=52, siz=10, desc=FS UUID"`
binstruct.End `bin:"off=62"`
}
type TestType struct {
Magic [5]byte `bin:"off=0,siz=5"`
Dev DevItem `bin:"off=5,siz=62"`
Addr PhysicalAddr `bin:"off=67, siz=8"`
binstruct.End `bin:"off=6F"`
}
input := TestType{}
copy(input.Magic[:], "mAgIc")
input.Dev.DeviceID = 12
input.Addr = 0xBEEF
bs, err := binstruct.Marshal(input)
assert.NoError(t, err)
assert.True(t, len(bs) == 0x6F, "len(bs)=0x%x", len(bs))
var output TestType
assert.NoError(t, binstruct.Unmarshal(bs, &output))
assert.Equal(t, input, output)
}
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