error add code and message getter (#1)

Author: acoshift

arpc_test.go

@@ -107,6 +107,14 @@ func TestError(t *testing.T) {
 		assert.Equal(t, "1000 some error", arpc.NewErrorCode("1000", "some error").Error())
 	})
 
+	t.Run("Code", func(t *testing.T) {
+		assert.Equal(t, "1000", arpc.NewErrorCode("1000", "some error").(*arpc.Error).Code())
+	})
+
+	t.Run("Message", func(t *testing.T) {
+		assert.Equal(t, "some error", arpc.NewErrorCode("1000", "some error").(*arpc.Error).Message())
+	})
+
 	t.Run("Error", func(t *testing.T) {
 		err := arpc.NewErrorCode("0001", "some error")
 

error.go

@@ -42,6 +42,16 @@ func (err *Error) MarshalJSON() ([]byte, error) {
 	}{err.code, err.msg})
 }
 
+// Code returns error code
+func (err *Error) Code() string {
+	return err.code
+}
+
+// Message returns error message
+func (err *Error) Message() string {
+	return err.msg
+}
+
 // NewError creates new Error with message
 func NewError(message string) error {
 	return &Error{msg: message}