[gxml/serialization] Added unit test for override Serializable.transform_to_string()

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit 962bb342947141fe442871e60ea777ca5d1129ef
Author: Daniel Espinosa <esodan gmail com>
Date:   Mon Oct 28 23:08:46 2013 -0600

    Added unit test for override Serializable.transform_to_string()

 test/SerializableObjectModelTest.vala |   46 +++++++++++++++++++++++++++++++++
 1 files changed, 46 insertions(+), 0 deletions(-)
---
diff --git a/test/SerializableObjectModelTest.vala b/test/SerializableObjectModelTest.vala
index b2cffb9..5c48aed 100644
--- a/test/SerializableObjectModelTest.vala
+++ b/test/SerializableObjectModelTest.vala
@@ -165,6 +165,20 @@ public class Monitor : ObjectModel
 }
 
 
+public class Cpu : ObjectModel
+{
+       public float ghz { get; set; default = (float) 0.0; }
+       public override bool transform_to_string (GLib.Value val, ref string str)
+       {
+               if (val.type ().is_a (typeof (float))) {
+                       str = "%.2f".printf (val.get_float ());
+                       return true;
+               }
+               return false;
+       }
+}
+
+
 class SerializableObjectModelTest : GXmlTest
 {
        public static void add_tests ()
@@ -495,6 +509,38 @@ class SerializableObjectModelTest : GXmlTest
                        }
                }
                );
+               Test.add_func ("/gxml/serializable/object_model/override_transform_to_string",
+               () => {
+                       var cpu = new Cpu ();
+                       cpu.ghz = (float) 3.85;
+                       var doc = new Document ();
+                       cpu.serialize (doc);
+                       stdout.printf (@"DOC: $doc");
+                       try {
+                               cpu.serialize (doc);
+                               if (doc.document_element == null) {
+                                       stdout.printf (@"ERROR CPU: no root element");
+                                       assert_not_reached ();
+                               }
+                               if (doc.document_element.node_name != "cpu") {
+                                       stdout.printf (@"ERROR CPU: root element 
$(doc.document_element.node_name)");
+                                       assert_not_reached ();
+                               }
+                               var ghz = doc.document_element.get_attribute_node ("ghz");
+                               if (ghz == null) {
+                                       stdout.printf (@"ERROR CPU: no attribute ghz");
+                                       assert_not_reached ();
+                               }
+                               if (ghz.node_value != "3.85") {
+                                       stdout.printf (@"ERROR CPU: ghz $(ghz.node_value)");
+                                       assert_not_reached ();
+                               }
+                       }
+                       catch (GLib.Error e) {
+                               stdout.printf (@"Error: $(e.message)");
+                               assert_not_reached ();
+                       }
+               });
        }
        static void serialize_manual_check (Element element, Manual manual)
        {