* ext/psych/*: importing Psych to trunk

* test/psych/*: ditto
* lib/psych/*: ditto

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27079 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/psych/test_exception.rb

@@ -0,0 +1,39 @@
+require 'test/psych/helper'
+
+module Psych
+  class TestException < TestCase
+    class Wups < Exception
+      attr_reader :foo, :bar
+      def initialize *args
+        super
+        @foo = 1
+        @bar = 2
+      end
+    end
+
+    def setup
+      super
+      @wups = Wups.new
+    end
+
+    def test_convert
+      w = Psych.load(Psych.dump(@wups))
+      assert_equal @wups, w
+      assert_equal 1, w.foo
+      assert_equal 2, w.bar
+    end
+
+    def test_to_yaml_properties
+      class << @wups
+        def to_yaml_properties
+          [:@foo]
+        end
+      end
+
+      w = Psych.load(Psych.dump(@wups))
+      assert_equal @wups, w
+      assert_equal 1, w.foo
+      assert_nil w.bar
+    end
+  end
+end