Merge pull request rspec#1439 from jamelablack/regex_bug_fix

Bug fix: removed spaces in regex

Author: cupakromer

Changelog.md

@@ -5,6 +5,8 @@ Bug Fixes:
 
 * Fix another load order issued which causes an undefined method `fixture_path` error
   when loading rspec-rails after a spec has been created. (Nikki Murray, #1430)
+* Removed incorrect surrounding whitespace in the rspec-rails backtrace
+  exclusion pattern for its own `lib` code. (Jam Black, #1439)
 
 ### 3.3.3 / 2015-07-15
 [Full Changelog](http://github.com/rspec/rspec-rails/compare/v3.3.2...v3.3.3)

lib/rspec/rails/configuration.rb

@@ -39,7 +39,7 @@ class Configuration
     # @private
     def self.initialize_configuration(config)
       config.backtrace_exclusion_patterns << /vendor\//
-      config.backtrace_exclusion_patterns << %r{ lib/rspec/rails }
+      config.backtrace_exclusion_patterns << %r{lib/rspec/rails}
 
       # controller settings
       config.add_setting :infer_base_class_for_anonymous_controllers, :default => true

spec/rspec/rails/configuration_spec.rb

@@ -18,7 +18,7 @@
   it "adds 'lib/rspec/rails' to the backtrace exclusions" do
     expect(
       config.backtrace_exclusion_patterns
-    ).to include(%r{ lib/rspec/rails })
+    ).to include(%r{lib/rspec/rails})
   end
 
   shared_examples_for "adds setting" do |accessor, opts|