fixup! Add an expected warning alias

Author: pirj

spec/rspec/core/example_group_spec.rb

@@ -56,12 +56,12 @@ def metadata_hash(*args)
     end
 
     it 'does not treat the first argument as a metadata key even if it is a symbol' do
-      group = with_isolated_stderr { RSpec.describe(:symbol) }
+      group = with_an_expected_warning { RSpec.describe(:symbol) }
       expect(group.metadata).not_to include(:symbol)
     end
 
     it 'treats the first argument as part of the description when it is a symbol' do
-      group = with_isolated_stderr { RSpec.describe(:symbol) }
+      group = with_an_expected_warning { RSpec.describe(:symbol) }
       expect(group.description).to eq("symbol")
     end
 

spec/rspec/core/memoized_helpers_spec.rb

@@ -5,7 +5,7 @@ module RSpec::Core
     before(:each) { RSpec.configuration.configure_expectation_framework }
 
     def subject_value_for(describe_arg, &block)
-      example_group = with_isolated_stderr { RSpec.describe(describe_arg, &block) }
+      example_group = with_an_expected_warning { RSpec.describe(describe_arg, &block) }
       subject_value = nil
       example_group.example { subject_value = subject }
       example_group.run

spec/rspec/core/metadata_spec.rb

@@ -387,7 +387,7 @@ def metadata_for(*args)
 
           context "with a Symbol" do
             it "returns the symbol" do
-              expect(with_isolated_stderr { value_for(:group) }).to be(:group)
+              expect(with_an_expected_warning { value_for(:group) }).to be(:group)
             end
           end
 

spec/spec_helper.rb

@@ -62,6 +62,10 @@ def handle_current_dir_change
   ensure
     RSpec::Core::Metadata.instance_variable_set(:@relative_path_regex, nil)
   end
+
+  def with_an_expected_warning
+    with_isolated_stderr { yield }
+  end
 end
 
 RSpec.configure do |c|