initial commit

1 files changed, 49 insertions, 0 deletions

diff --git a/pkg/binstruct/binstruct_test.go b/pkg/binstruct/binstruct_test.go
new file mode 100644
index 0000000..33a2f0a
--- /dev/null
+++ b/pkg/binstruct/binstruct_test.go
@@ -0,0 +1,49 @@
+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 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"`
+
+		binstruct.End `bin:"off=67"`
+	}
+
+	input := TestType{}
+	copy(input.Magic[:], "mAgIc")
+	input.Dev.DeviceID = 12
+
+	bs, err := binstruct.Marshal(input)
+	assert.NoError(t, err)
+	assert.True(t, len(bs) == 0x67, "len(bs)=0x%x", len(bs))
+}