Merge pull request #23 from loderunner/master
add FromBytes constructor
diff --git a/uuid.go b/uuid.go
index 23161a8..1320d60 100644
--- a/uuid.go
+++ b/uuid.go
@@ -97,6 +97,13 @@
return uuid, nil
}
+// FromBytes creates a new UUID from a byte slice. Returns an error if the slice
+// does not have a length of 16. The bytes are copied from the slice.
+func FromBytes(b []byte) (uuid UUID, err error) {
+ err = uuid.UnmarshalBinary(b)
+ return uuid, err
+}
+
// Must returns uuid if err is nil and panics otherwise.
func Must(uuid UUID, err error) UUID {
if err != nil {
diff --git a/uuid_test.go b/uuid_test.go
index 2426168..3ecd8c2 100644
--- a/uuid_test.go
+++ b/uuid_test.go
@@ -121,6 +121,25 @@
}
}
+func TestFromBytes(t *testing.T) {
+ b := []byte{
+ 0x7d, 0x44, 0x48, 0x40,
+ 0x9d, 0xc0,
+ 0x11, 0xd1,
+ 0xb2, 0x45,
+ 0x5f, 0xfd, 0xce, 0x74, 0xfa, 0xd2,
+ }
+ uuid, err := FromBytes(b)
+ if err != nil {
+ t.Fatalf("%s", err)
+ }
+ for i := 0; i < len(uuid); i++ {
+ if b[i] != uuid[i] {
+ t.Fatalf("FromBytes() got %v expected %v\b", uuid[:], b)
+ }
+ }
+}
+
func TestConstants(t *testing.T) {
for x, tt := range constants {
v, ok := tt.c.(fmt.Stringer)
