[gxml] GElement: Added tests for query_selectors()

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit 56d2a93bb9e7d1e3d9309070c7318209c8eaa373
Author: Daniel Espinosa <esodan gmail com>
Date:   Wed Sep 6 10:28:23 2017 -0700

    GElement: Added tests for query_selectors()

 gxml/GXmlElement.vala  |   11 +++++++-
 test/GElementTest.vala |   58 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 67 insertions(+), 2 deletions(-)
---
diff --git a/gxml/GXmlElement.vala b/gxml/GXmlElement.vala
index 3cf8fb1..cc90781 100644
--- a/gxml/GXmlElement.vala
+++ b/gxml/GXmlElement.vala
@@ -314,8 +314,15 @@ public class GXml.GElement : GXml.GNonDocumentChildNode,
   public int child_element_count { get { return children.size; } }
 
   public DomNodeList query_selector_all (string selectors) throws GLib.Error {
-  // FIXME:
-    throw new DomError.SYNTAX_ERROR (_("DomElement query_selector_all is not implemented"));
+    var cs = new CssSelectorParser ();
+    cs.parse (selectors);
+    var l = new GomNodeList ();
+    foreach (GXml.Node e in children_nodes) {
+      if (!(e is DomElement)) continue;
+      if (cs.match (e as DomElement))
+        l.add (e as DomNode);
+    }
+    return l as DomNodeList;
   }
   // XPathContext implementation
   /**
diff --git a/test/GElementTest.vala b/test/GElementTest.vala
index 1e48792..0d83451 100644
--- a/test/GElementTest.vala
+++ b/test/GElementTest.vala
@@ -188,5 +188,63 @@ class GElementTest : GXmlTest  {
                                        assert_not_reached ();
                                }
                });
+               Test.add_func ("/gxml/gelement/css-selector", () => {
+                       try {
+                               var d = new GDocument () as DomDocument;
+                               var r = d.create_element ("root");
+                               d.append_child (r);
+                               var c1 = d.create_element ("child");
+                               c1.set_attribute ("class", "error");
+                               r.append_child (c1);
+                               var c2 = d.create_element ("child");
+                               c2.set_attribute ("class", "warning");
+                               r.append_child (c2);
+                               var c3 = d.create_element ("child");
+                               c3.set_attribute ("class", "error warning");
+                               r.append_child (c3);
+                               var c4 = d.create_element ("child");
+                               c4.set_attribute ("class", "error calc");
+                               r.append_child (c4);
+                               var c5 = d.create_element ("child");
+                               r.append_child (c5);
+                               var n1 = r.query_selector ("child");
+                               assert (n1 != null);
+                               assert (n1.get_attribute ("class") == "error");
+                               var n2 = r.query_selector ("child.warning");
+                               assert (n2 != null);
+                               assert (n2.get_attribute ("class") == "warning");
+                               var n3 = r.query_selector ("child[class]");
+                               assert (n3 != null);
+                               assert (n3.get_attribute ("class") == "error");
+                               var n4 = r.query_selector ("child[class=\"error calc\"]");
+                               assert (n4 != null);
+                               assert (n4.get_attribute ("class") == "error calc");
+                               var l1 = r.query_selector_all ("child");
+                               assert (l1 != null);
+                               assert (l1.length == 5);
+                               assert (l1.item (4).node_name == "child");
+                               var l2 = r.query_selector_all ("child[class]");
+                               assert (l2 != null);
+                               assert (l2.length == 4);
+                               assert (l2.item (3).node_name == "child");
+                               var l3 = r.query_selector_all ("child[class=\"error\"]");
+                               assert (l3 != null);
+                               assert (l3.length == 1);
+                               assert (l3.item (0).node_name == "child");
+                               var c6 = d.create_element ("child");
+                               c6.set_attribute ("prop", "val1");
+                               r.append_child (c6);
+                               var c7 = d.create_element ("child");
+                               c7.set_attribute ("prop", "val1");
+                               r.append_child (c7);
+                               var l4 = r.query_selector_all ("child[prop=\"val1\"]");
+                               assert (l4 != null);
+                               assert (l4.length == 2);
+                               assert (l4.item (0).node_name == "child");
+                       } catch (GLib.Error e) {
+                   GLib.message ("Error: "+e.message);
+                   assert_not_reached ();
+                 }
+               });
        }
 }