Adjustments from code review

Author: coorasse

spec/fixtures/issue_1057.erb

@@ -16,17 +16,3 @@ def source_fixture(filename)
 def source_fixture_base_directory
   @source_fixture_base_directory ||= File.dirname(__FILE__)
 end
-
-# Taken from http://stackoverflow.com/questions/4459330/how-do-i-temporarily-redirect-stderr-in-ruby
-def capture_stderr
-  # The output stream must be an IO-like object. In this case we capture it in
-  # an in-memory IO object so we can return the string value. You can assign any
-  # IO object here.
-  previous_stderr = $stderr
-  $stderr = StringIO.new
-  yield
-  $stderr.string
-ensure
-  # Restore the previous value of stderr (typically equal to STDERR).
-  $stderr = previous_stderr
-end

spec/helper.rb

@@ -364,6 +364,10 @@
     it "has 16 source lines regardless of extra data in coverage array" do
       expect(subject.lines.count).to eq(16)
     end
+
+    it "does not output to stderr" do
+      expect { subject.lines }.not_to output.to_stderr
+    end
   end
 
   context "A file that has inline branches" do