Rework package structure for unixfs and subpackage

cc @jbenet

unixfs/format_test.go

@@ -0,0 +1,36 @@
+package unixfs
+
+import (
+	"testing"
+
+	"github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/goprotobuf/proto"
+)
+
+func TestMultiBlock(t *testing.T) {
+	mbf := new(MultiBlock)
+	for i := 0; i < 15; i++ {
+		mbf.AddBlockSize(100)
+	}
+
+	mbf.Data = make([]byte, 128)
+
+	b, err := mbf.GetBytes()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	pbn := new(PBData)
+	err = proto.Unmarshal(b, pbn)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	ds, err := DataSize(b)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if ds != (100*15)+128 {
+		t.Fatal("Datasize calculations incorrect!")
+	}
+}