Move ToHex/FromHex into bytes

common/bytes_test.go

@@ -1,6 +1,9 @@
 package common
 
 import (
+	"bytes"
+	"testing"
+
 	checker "gopkg.in/check.v1"
 )
 
@@ -191,3 +194,21 @@ func (s *BytesSuite) TestRightPadString(c *checker.C) {
 	c.Assert(resstd, checker.Equals, exp)
 	c.Assert(resshrt, checker.Equals, val)
 }
+
+func TestFromHex(t *testing.T) {
+	input := "0x01"
+	expected := []byte{1}
+	result := FromHex(input)
+	if bytes.Compare(expected, result) != 0 {
+		t.Errorf("Expected % x got % x", expected, result)
+	}
+}
+
+func TestFromHexOddLength(t *testing.T) {
+	input := "0x1"
+	expected := []byte{1}
+	result := FromHex(input)
+	if bytes.Compare(expected, result) != 0 {
+		t.Errorf("Expected % x got % x", expected, result)
+	}
+}