key

util/util.go

-package data
+package util
 
 import (
 	"fmt"
@@ -8,6 +8,9 @@ import (
 var Debug bool
 var NotImplementedError = fmt.Errorf("Error: not implemented yet.")
 
+// a Key for maps. It's a string (rep of a multihash).
+type Key string
+
 // Shorthand printing functions.
 func PErr(format string, a ...interface{}) {
 	fmt.Fprintf(os.Stderr, format, a...)

util/util_test.go

+package util
+
+import (
+  "bytes"
+  "fmt"
+  mh "github.com/jbenet/go-multihash"
+  "testing"
+)
+
+func TestKey(t *testing.T) {
+
+  h1, err := mh.Sum([]byte("beep boop"), mh.SHA2_256, -1)
+  if err != nil {
+    t.Error(err)
+  }
+
+  k1 := Key(h1)
+  h2 := mh.Multihash(k1)
+  k2 := Key(h2)
+
+  if !bytes.Equal(h1, h2) {
+    t.Error("Multihashes not equal.")
+  }
+
+  if k1 != k2 {
+    t.Error("Keys not equal.")
+  }
+}