Move spec/rubyspec to spec/ruby for consistency

* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/library/observer/notify_observers_spec.rb

@@ -0,0 +1,31 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+
+describe "Observer#notify_observers" do
+
+  before :each do
+    @observable = ObservableSpecs.new
+    @observer = ObserverCallbackSpecs.new
+    @observable.add_observer(@observer)
+  end
+
+  it "must call changed before notifying observers" do
+    @observer.value.should == nil
+    @observable.notify_observers("test")
+    @observer.value.should == nil
+  end
+
+  it "verifies observer responds to update" do
+    lambda {
+      @observable.add_observer(@observable)
+    }.should raise_error(NoMethodError)
+  end
+
+  it "receives the callback" do
+    @observer.value.should == nil
+    @observable.changed
+    @observable.notify_observers("test")
+    @observer.value.should == "test"
+  end
+
+end