Add setters for RSpec.world and RSpec.configuration

lib/rspec/core.rb

@@ -60,6 +60,12 @@ def self.world
     @world ||= RSpec::Core::World.new
   end
 
+  # @private
+  # Used internally to set the global object
+  def self.world=(new_world)
+    @world = new_world
+  end
+
   # @private
   # Used internally to ensure examples get reloaded between multiple runs in
   # the same process.
@@ -94,6 +100,12 @@ def self.configuration
     @configuration ||= RSpec::Core::Configuration.new
   end
 
+  # @private
+  # Used internally to set the global object
+  def self.configuration=(new_configuration)
+    @configuration = new_configuration
+  end
+
   # Yields the global configuration to a block.
   # @yield [Configuration] global configuration
   #

spec/rspec/core_spec.rb

@@ -7,6 +7,16 @@
     end
   end
 
+  describe "::configuration=" do
+    it "sets the configuration object" do
+      configuration = RSpec::Core::Configuration.new
+
+      RSpec.configuration = configuration
+
+      expect(RSpec.configuration).to equal(configuration)
+    end
+  end
+
   describe "::configure" do
     it "yields the current configuration" do
       RSpec.configure do |config|
@@ -21,6 +31,16 @@
     end
   end
 
+  describe "::world=" do
+    it "sets the world object" do
+      world = RSpec::Core::World.new
+
+      RSpec.world = world
+
+      expect(RSpec.world).to equal(world)
+    end
+  end
+
   describe "::reset" do
     it "resets the configuration and world objects" do
       config_before_reset = RSpec.configuration

spec/spec_helper.rb

@@ -41,8 +41,8 @@ def self.sandboxed(&block)
       @orig_world  = RSpec.world
       new_config = RSpec::Core::Configuration.new
       new_world  = RSpec::Core::World.new(new_config)
-      RSpec.instance_variable_set(:@configuration, new_config)
-      RSpec.instance_variable_set(:@world, new_world)
+      RSpec.configuration = new_config
+      RSpec.world = new_world
       object = Object.new
       object.extend(RSpec::Core::SharedExampleGroup)
 
@@ -63,8 +63,8 @@ def run(reporter=nil)
         remove_method :orig_run
       end
 
-      RSpec.instance_variable_set(:@configuration, @orig_config)
-      RSpec.instance_variable_set(:@world, @orig_world)
+      RSpec.configuration = @orig_config
+      RSpec.world = @orig_world
     end
   end