1 files changed, 110 insertions, 0 deletions
diff --git a/railties/test/application/initializers/load_path_test.rb b/railties/test/application/initializers/load_path_test.rb
new file mode 100644
index 0000000000..cd05956356
--- /dev/null
+++ b/railties/test/application/initializers/load_path_test.rb
@@ -0,0 +1,110 @@
+require "isolation/abstract_unit"
+
+module ApplicationTests
+  class LoadPathTest < ActiveSupport::TestCase
+    include ActiveSupport::Testing::Isolation
+
+    def setup
+      build_app
+      boot_rails
+      FileUtils.rm_rf "#{app_path}/config/environments"
+    end
+
+    def teardown
+      teardown_app
+    end
+
+    test "initializing an application adds the application paths to the load path" do
+      add_to_config <<-RUBY
+        config.root = "#{app_path}"
+      RUBY
+
+      require "#{app_path}/config/environment"
+      assert $:.include?("#{app_path}/app/models")
+    end
+
+    test "initializing an application allows to load code on lib path inside application class definition" do
+      app_file "lib/foo.rb", <<-RUBY
+        module Foo; end
+      RUBY
+
+      add_to_config <<-RUBY
+        require "foo"
+        raise "Expected Foo to be defined" unless defined?(Foo)
+      RUBY
+
+      assert_nothing_raised do
+        require "#{app_path}/config/environment"
+      end
+
+      assert $:.include?("#{app_path}/lib")
+    end
+
+    test "initializing an application eager load any path under app" do
+      app_file "app/anything/foo.rb", <<-RUBY
+        module Foo; end
+      RUBY
+
+      add_to_config <<-RUBY
+        config.root = "#{app_path}"
+      RUBY
+
+      require "#{app_path}/config/environment"
+      assert Foo
+    end
+
+    test "eager loading loads parent classes before children" do
+      app_file "lib/zoo.rb", <<-ZOO
+        class Zoo ; include ReptileHouse ; end
+      ZOO
+
+      app_file "lib/zoo/reptile_house.rb", <<-ZOO
+        module Zoo::ReptileHouse ; end
+      ZOO
+
+      add_to_config <<-RUBY
+        config.root = "#{app_path}"
+        config.eager_load_paths << "#{app_path}/lib"
+      RUBY
+
+      require "#{app_path}/config/environment"
+      assert Zoo
+    end
+
+    test "eager loading accepts Pathnames" do
+      app_file "lib/foo.rb", <<-RUBY
+        module Foo; end
+      RUBY
+
+      add_to_config <<-RUBY
+        config.eager_load = true
+        config.eager_load_paths << Pathname.new("#{app_path}/lib")
+      RUBY
+
+      require "#{app_path}/config/environment"
+      assert Foo
+    end
+
+    test "load environment with global" do
+      $initialize_test_set_from_env = nil
+      app_file "config/environments/development.rb", <<-RUBY
+        $initialize_test_set_from_env = 'success'
+        Rails.application.configure do
+          config.cache_classes = true
+          config.time_zone = "Brasilia"
+        end
+      RUBY
+
+      assert_nil $initialize_test_set_from_env
+      add_to_config <<-RUBY
+        config.root = "#{app_path}"
+          config.time_zone = "UTC"
+      RUBY
+
+      require "#{app_path}/config/environment"
+      assert_equal "success", $initialize_test_set_from_env
+      assert Rails.application.config.cache_classes
+      assert_equal "Brasilia", Rails.application.config.time_zone
+    end
+  end
+end