Merge pull request #108 from heetch/fix/uuid-zero-object

Allow UUID empty string decoding as empty UUID object

decode.go

@@ -176,6 +176,12 @@ func (d *decoder) eval(target reflect.Value) {
 				}
 			case vm.String:
 				if target.Type() == uuidType {
+					if frame.String == "" {
+						// We produce the empty string "" when encoding zero UUID value,
+						// so allow it when decoding too.
+						target.Set(reflect.ValueOf(gouuid.UUID{}))
+						break
+					}
 					val, err := gouuid.Parse(frame.String)
 					if err != nil {
 						d.error(fmt.Errorf("invalid UUID in Avro encoding: %w", err))

gotype_test.go

@@ -247,6 +247,11 @@ func TestGoTypeWithUUID(t *testing.T) {
 			c.Assert(err, qt.IsNil)
 			c.Assert(x, qt.DeepEquals, R{})
 		}
+
+		var x R
+		_, err = avro.Unmarshal(data, &x, wType)
+		c.Assert(err, qt.IsNil)
+		c.Assert(x, qt.DeepEquals, R{})
 	})
 
 }