require_relative '../../../spec_helper'

ruby_version_is ''...'3.0' do
  require 'rexml/document'

  describe "REXML::Attribute#namespace" do
    it "returns the namespace url" do
      e = REXML::Element.new("root")
      e.add_attribute REXML::Attribute.new("xmlns:ns", "http://some_uri")
      e.namespace("ns").should == "http://some_uri"
    end

    it "returns nil if namespace is not defined" do
      e = REXML::Element.new("root")
      e.add_attribute REXML::Attribute.new("test", "value")
      e.namespace("test").should == nil
      e.namespace("ns").should == nil
    end

    it "defaults arg to nil" do
      e = REXML::Element.new("root")
      e.add_attribute REXML::Attribute.new("xmlns:ns", "http://some_uri")
      e.namespace.should == ""
      e.namespace("ns").should == "http://some_uri"
    end
  end
end