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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=0x0, siz=0x8"` // device id
NumBytes uint64 `bin:"off=0x8, siz=0x8"` // number of bytes
NumBytesUsed uint64 `bin:"off=0x10, siz=0x8"` // number of bytes used
IOOptimalAlign uint32 `bin:"off=0x18, siz=0x4"` // optimal I/O align
IOOptimalWidth uint32 `bin:"off=0x1c, siz=0x4"` // optimal I/O width
IOMinSize uint32 `bin:"off=0x20, siz=0x4"` // minimal I/O size (sector size)
Type uint64 `bin:"off=0x24, siz=0x8"` // type
Generation uint64 `bin:"off=0x2c, siz=0x8"` // generation
StartOffset uint64 `bin:"off=0x34, siz=0x8"` // start offset
DevGroup uint32 `bin:"off=0x3c, siz=0x4"` // dev group
SeekSpeed uint8 `bin:"off=0x40, siz=0x1"` // seek speed
Bandwidth uint8 `bin:"off=0x41, siz=0x1"` // bandwidth
DevUUID UUID `bin:"off=0x42, siz=0x10"` // device UUID
FSUUID UUID `bin:"off=0x52, siz=0x10"` // FS UUID
binstruct.End `bin:"off=0x62"`
}
type TestType struct {
Magic [5]byte `bin:"off=0x0,siz=0x5"`
Dev DevItem `bin:"off=0x5,siz=0x62"`
Addr PhysicalAddr `bin:"off=0x67, siz=0x8"`
binstruct.End `bin:"off=0x6F"`
}
assert.Equal(t, 0x6F, binstruct.StaticSize(TestType{}))
input := TestType{}
copy(input.Magic[:], "mAgIc")
input.Dev.DeviceID = 12
input.Addr = 0xBEEF
bs, err := binstruct.Marshal(input)
assert.NoError(t, err)
assert.Equal(t, 0x6F, len(bs))
var output TestType
n, err := binstruct.Unmarshal(bs, &output)
assert.NoError(t, err)
assert.Equal(t, 0x6F, n)
assert.Equal(t, input, output)
}
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