pull in spec helper material from rspec-core

spec/rspec/rails/example/view_rendering_spec.rb

@@ -64,9 +64,5 @@
     group.run(double.as_null_object)
     rendering_views.should be_true
   end
-
-  after do
-    Rspec::Core::world.example_groups.pop
-  end
 end
 

spec/spec_helper.rb

@@ -3,11 +3,27 @@
 
 require 'rspec/rails'
 
+Dir["#{File.dirname(__FILE__)}/support/**/*.rb"].each {|f| require f}
+
+# TODO - most of this is borrowed from rspec-core's spec_helper - should
+# be extracted to something we can use here
 def in_editor?
   ENV.has_key?('TM_MODE') || ENV.has_key?('EMACS') || ENV.has_key?('VIM')
 end
 
+class Rspec::Core::ExampleGroup
+  def self.run_all(reporter=nil)
+    run(reporter || Rspec::Mocks::Mock.new('reporter').as_null_object)
+  end
+end
+
 Rspec.configure do |c|
   c.color_enabled = !in_editor?
+  c.before(:each) do
+    @real_world = Rspec.world
+    Rspec.instance_variable_set(:@world, Rspec::Core::World.new)
+  end
+  c.after(:each) do
+    Rspec.instance_variable_set(:@world, @real_world)
+  end
 end
-

spec/support/helpers.rb

@@ -0,0 +1,20 @@
+module Helpers
+  def stub_metadata(additional_metadata)
+    stub_metadata = metadata_with(additional_metadata)
+    Rspec::Core::ExampleGroup.stub(:metadata) { stub_metadata }
+  end
+
+  def metadata_with(additional_metadata)
+    m = Rspec::Core::Metadata.new
+    m.process("example group")
+
+    group_metadata = additional_metadata.delete(:example_group)
+    if group_metadata
+      m[:example_group].merge!(group_metadata)
+    end
+    m.merge!(additional_metadata)
+    m
+  end
+
+  Rspec.configure {|c| c.include self}
+end