Run the logger tests in isolation

2 files changed, 3 insertions, 1 deletions

diff --git a/activesupport/lib/active_support/testing/isolation.rb b/activesupport/lib/active_support/testing/isolation.rb
index 8f22df6f2b..50ec50ca52 100644
--- a/activesupport/lib/active_support/testing/isolation.rb
+++ b/activesupport/lib/active_support/testing/isolation.rb
@@ -39,7 +39,7 @@ module ActiveSupport
         include Enumerable
 
         # default to 2 cores
-        CORES = ENV['TEST_CORES'].to_i || 2
+        CORES = (ENV['TEST_CORES'] || 2).to_i
 
         def initialize list
           @list  = list
diff --git a/railties/test/application/rack/logger_test.rb b/railties/test/application/rack/logger_test.rb
index a77c6f472c..46fd09cb26 100644
--- a/railties/test/application/rack/logger_test.rb
+++ b/railties/test/application/rack/logger_test.rb
@@ -5,6 +5,7 @@ require "rack/test"
 module ApplicationTests
   module RackTests
     class LoggerTest < ActiveSupport::TestCase
+      include ActiveSupport::Testing::Isolation
       include ActiveSupport::LogSubscriber::TestHelper
       include Rack::Test::Methods
 
@@ -17,6 +18,7 @@ module ApplicationTests
       end
 
       def teardown
+        super
         teardown_app
       end