[gxml] Added unit tests for GCharacterData implemenation of DomCharacterData

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit 63390275b4f99533cc9214f956df239c2c360da1
Author: Daniel Espinosa <esodan gmail com>
Date:   Thu Jul 21 19:18:15 2016 -0500

    Added unit tests for GCharacterData implemenation of DomCharacterData
    
    * Added tests for append_data(), delete_data(), insert_data() and
      replace_data()

 test/DomGDocumentTest.vala |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/test/DomGDocumentTest.vala b/test/DomGDocumentTest.vala
index 48e3264..b5dce9d 100644
--- a/test/DomGDocumentTest.vala
+++ b/test/DomGDocumentTest.vala
@@ -500,10 +500,16 @@ static const string XMLDOC ="<?xml version=\"1.0\"?>
                                catch {}
                                t.append_data (" HI");
                                assert (t.data == "TEXT HI");
-                               GLib.message ("t = "+t.substring_data (0, 4));
                                t.replace_data (0, 4, "");
-                               GLib.message ("Text:'"+t.data+"'");
                                assert (t.data == " HI");
+                               t.insert_data (0, "TEXT");
+                               assert (t.data == "TEXT HI");
+                               t.delete_data (0, 4);
+                               assert (t.data == " HI");
+                               t.insert_data (0, "TEXT");
+                               assert (t.data == "TEXT HI");
+                               t.replace_data (0, 4, "text");
+                               assert (t.data == "text HI");
                        } catch (GLib.Error e) {
                                GLib.message ("Error: "+ e.message);
                                assert_not_reached ();