Element#namespace test add

Author: naitoh

test/test_core.rb

@@ -653,18 +653,23 @@ def test_namespace
       assert_equal "<sean:blah>Some text</sean:blah>", out
     end
 
-
     def test_add_namespace
       e = Element.new 'a'
+      assert_equal "", e.namespace
+      assert_equal nil, e.namespace('foo')
       e.add_namespace 'someuri'
       e.add_namespace 'foo', 'otheruri'
       e.add_namespace 'xmlns:bar', 'thirduri'
+      assert_equal "someuri", e.namespace
+      assert_equal "otheruri", e.namespace('foo')
+      assert_equal "otheruri", e.namespace('xmlns:foo')
+      assert_equal "thirduri", e.namespace('bar')
+      assert_equal "thirduri", e.namespace('xmlns:bar')
       assert_equal 'someuri', e.attributes['xmlns']
       assert_equal 'otheruri', e.attributes['xmlns:foo']
       assert_equal 'thirduri', e.attributes['xmlns:bar']
     end
 
-
     def test_big_documentation
       d = File.open(fixture_path("documentation.xml")) {|f| Document.new f }
       assert_equal "Sean Russell", d.elements["documentation/head/author"].text.tr("\n\t", " ").squeeze(" ")
@@ -764,9 +769,15 @@ def test_attributes_each
 
     def test_delete_namespace
       doc = Document.new "<a xmlns='1' xmlns:x='2'/>"
+      assert_equal "1", doc.root.namespace
+      assert_equal "2", doc.root.namespace('x')
+      assert_equal "2", doc.root.namespace('xmlns:x')
       doc.root.delete_namespace
       doc.root.delete_namespace 'x'
       assert_equal "<a/>", doc.to_s
+      assert_equal "", doc.root.namespace
+      assert_equal nil, doc.root.namespace('x')
+      assert_equal nil, doc.root.namespace('xmlns:x')
     end
 
     def test_each_element_with_attribute