Update Rakefile, remove test that doesn't need to be run

Author: wied03

Rakefile

@@ -2,12 +2,9 @@ Bundler.require
 Bundler::GemHelper.install_tasks
 
 require 'opal/rspec/rake_task'
-require 'react/source'
+require_relative 'spec/rails_assets'
 
-Opal::RSpec::RakeTask.new(:default) do |server, task|
-  # Need a Phantom polyfill, there is a docs and js path, order is not guaranteed, so just append both
-  RailsAssetsEs5Shim.load_paths.each {|p| server.append_path p}
-  RailsAssetsJquery.load_paths.each { |p| server.append_path p }
-  server.append_path File.dirname(React::Source.bundled_path_for('react-with-addons.js'))
+Opal::RSpec::RakeTask.new(:default) do |_, task|
+  task.default_path = 'spec/opal'
   task.pattern = 'spec/opal/**/*_spec.rb'
 end

spec/opal/react_spec.rb

@@ -154,7 +154,6 @@ def render
     end
   end
 
-
   describe "render" do
     async "should render element to DOM" do
       div = `document.createElement("div")`
@@ -178,13 +177,6 @@ def render
         expect(component).to respond_to(method_name)
       end
     end
-
-    pending "should return nil to prevent abstraction leakage" do
-      div = `document.createElement("div")`
-      expect {
-        React.render(React.create_element('span') { "lorem" }, div)
-      }.to be_nil
-    end
   end
 
   describe "render_to_string" do