Fix tests depending on sort stability

* test/rexml/xpath/test_text.rb (test_ancestors): Array#sort may
  not be stable.  [ruby-core:76088] [Bug #12509]
* test/rss/test_maker_{0.9,1.0,2.0}.rb (test_items): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56412 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Thu Oct 13 11:31:40 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* test/rexml/xpath/test_text.rb (test_ancestors): Array#sort may
+	  not be stable.  [ruby-core:76088] [Bug #12509]
+
+	* test/rss/test_maker_{0.9,1.0,2.0}.rb (test_items): ditto.
+
 Thu Oct 13 10:37:31 2016  Eric Wong  <e@80x24.org>
 
 	* doc/extension.rdoc: wording fix

test/rexml/xpath/test_text.rb

@@ -69,7 +69,9 @@ module REXMLTests
       assert_equal(1, nodes.size, "<b> has one element ancestor")
       nodes = @doc.get_elements('//b/ancestor::node()')
       assert_equal(2, nodes.size, "<b> has two node ancestors")
-      assert_kind_of REXML::Document, nodes[1]
+      nodes.sort_by!(&:name)
+      assert_kind_of REXML::Document, nodes[0]
+      assert_kind_of REXML::Element, nodes[1]
     end
   end
 end

test/rss/test_maker_0.9.rb

@@ -315,6 +315,7 @@ module RSS
       assert_equal(link, item.link)
       assert_nil(item.description)
 
+      pubDate = Time.now
 
       item_size = 5
       rss = RSS::Maker.make("0.91") do |maker|
@@ -325,6 +326,7 @@ module RSS
             _item.title = "#{title}#{i}"
             _item.link = "#{link}#{i}"
             _item.description = "#{description}#{i}"
+            _item.date = pubDate - i
           end
         end
         maker.items.do_sort = true

test/rss/test_maker_1.0.rb

@@ -269,6 +269,7 @@ module RSS
       assert_equal(link, item.link)
       assert_nil(item.description)
 
+      pubDate = Time.now
 
       item_size = 5
       rss = RSS::Maker.make("1.0") do |maker|
@@ -279,6 +280,7 @@ module RSS
             _item.title = "#{title}#{i}"
             _item.link = "#{link}#{i}"
             _item.description = "#{description}#{i}"
+            _item.date = pubDate - i
           end
         end
         maker.items.do_sort = true

test/rss/test_maker_2.0.rb

@@ -390,7 +390,7 @@ module RSS
             item.description = "#{description}#{i}"
             item.author = "#{author}#{i}"
             item.comments = "#{comments}#{i}"
-            item.date = pubDate
+            item.date = pubDate - i
           end
         end
         maker.items.do_sort = true
@@ -402,8 +402,8 @@ module RSS
         assert_equal("#{description}#{i}", item.description)
         assert_equal("#{author}#{i}", item.author)
         assert_equal("#{comments}#{i}", item.comments)
-        assert_equal(pubDate, item.pubDate)
-        assert_equal(pubDate, item.date)
+        assert_equal(pubDate - i, item.pubDate)
+        assert_equal(pubDate - i, item.date)
       end
 
       rss = RSS::Maker.make("2.0") do |maker|