diff --git a/lib/noosfero/plugin.rb b/lib/noosfero/plugin.rb
index 4927c87..9b9d226 100644
--- a/lib/noosfero/plugin.rb
+++ b/lib/noosfero/plugin.rb
@@ -16,14 +16,7 @@ class Noosfero::Plugin
     end
 
     def init_system
-      enabled_plugins = Dir.glob(File.join(Rails.root, 'config', 'plugins', '*'))
-      if Rails.env.test? && !enabled_plugins.include?(File.join(Rails.root, 'config', 'plugins', 'foo'))
-        enabled_plugins << File.join(Rails.root, 'plugins', 'foo')
-      end
-
-      enabled_plugins.select do |entry|
-        File.directory?(entry)
-      end.each do |dir|
+      available_plugins.each do |dir|
         load_plugin dir
       end
     end
@@ -76,12 +69,19 @@ class Noosfero::Plugin
       klass(plugin_name)
     end
 
-    def all
-      @all ||= []
+    def available_plugins
+      unless @available_plugins
+        path = File.join(Rails.root, 'config', 'plugins', '*')
+        @available_plugins = Dir.glob(path).select{ |i| File.directory?(i) }
+        if Rails.env.test? && !@available_plugins.include?(File.join(Rails.root, 'config', 'plugins', 'foo'))
+          @available_plugins << File.join(Rails.root, 'plugins', 'foo')
+        end
+      end
+      @available_plugins
     end
 
-    def inherited(subclass)
-      all << subclass.to_s unless all.include?(subclass.to_s)
+    def all
+      @all ||= available_plugins.map{ |dir| (File.basename(dir) + "_plugin").camelize }
     end
 
     def public_name
diff --git a/test/functional/account_controller_test.rb b/test/functional/account_controller_test.rb
index 65a7864..7356ba9 100644
--- a/test/functional/account_controller_test.rb
+++ b/test/functional/account_controller_test.rb
@@ -689,6 +689,7 @@ class AccountControllerTest < ActionController::TestCase
         {:test => 5}
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
 
     e = User.find_by_login('ze').environment
     e.enable_plugin(Plugin1.name)
@@ -779,6 +780,7 @@ class AccountControllerTest < ActionController::TestCase
         lambda {"<strong>Plugin2 text</strong>"}
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
 
     Environment.default.enable_plugin(Plugin1.name)
     Environment.default.enable_plugin(Plugin2.name)
@@ -795,6 +797,7 @@ class AccountControllerTest < ActionController::TestCase
         User.new(:login => 'testuser')
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name])
     Environment.default.enable_plugin(Plugin1.name)
 
     post :login, :user => {:login => "testuser"}
@@ -809,6 +812,7 @@ class AccountControllerTest < ActionController::TestCase
         nil
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name])
     Environment.default.enable_plugin(Plugin1.name)
     post :login, :user => {:login => 'johndoe', :password => 'test'}
     assert session[:user]
@@ -822,6 +826,7 @@ class AccountControllerTest < ActionController::TestCase
         false
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([TestRegistrationPlugin.name])
     Noosfero::Plugin::Manager.any_instance.stubs(:enabled_plugins).returns([TestRegistrationPlugin.new])
 
     post :signup, :user => { :login => 'testuser', :password => '123456', :password_confirmation => '123456', :email => 'testuser@example.com' }
@@ -840,6 +845,7 @@ class AccountControllerTest < ActionController::TestCase
         true
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
     Noosfero::Plugin::Manager.any_instance.stubs(:enabled_plugins).returns([Plugin1.new, Plugin2.new])
 
     get :login
@@ -853,6 +859,7 @@ class AccountControllerTest < ActionController::TestCase
         false
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([TestRegistrationPlugin.name])
     Noosfero::Plugin::Manager.any_instance.stubs(:enabled_plugins).returns([TestRegistrationPlugin.new])
 
     #Redirect on get action
@@ -876,6 +883,7 @@ class AccountControllerTest < ActionController::TestCase
         true
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.new, Plugin2.new])
     Noosfero::Plugin::Manager.any_instance.stubs(:enabled_plugins).returns([Plugin1.new, Plugin2.new])
 
     get :login
@@ -894,6 +902,7 @@ class AccountControllerTest < ActionController::TestCase
         lambda {"<strong>Plugin2 text</strong>"}
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
 
     Environment.default.enable_plugin(Plugin1.name)
     Environment.default.enable_plugin(Plugin2.name)
diff --git a/test/functional/application_controller_test.rb b/test/functional/application_controller_test.rb
index fd1c4da..f7f4108 100644
--- a/test/functional/application_controller_test.rb
+++ b/test/functional/application_controller_test.rb
@@ -374,6 +374,8 @@ class ApplicationControllerTest < ActionController::TestCase
     end
     plugin2_path = '/plugin2/style.css'
 
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
+
     environment = Environment.default
     environment.enable_plugin(Plugin1.name)
     environment.enable_plugin(Plugin2.name)
@@ -405,6 +407,8 @@ class ApplicationControllerTest < ActionController::TestCase
     plugin2_path2 = '/plugin2/'+js2
     plugin2_path3 = '/plugin2/'+js3
 
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
+
     environment = Environment.default
     environment.enable_plugin(Plugin1.name)
     environment.enable_plugin(Plugin2.name)
@@ -431,6 +435,8 @@ class ApplicationControllerTest < ActionController::TestCase
       end
     end
 
+    Noosfero::Plugin.stubs(:all).returns([TestBodyBeginning1Plugin.name, TestBodyBeginning2Plugin.name])
+
     Noosfero::Plugin::Manager.any_instance.stubs(:enabled_plugins).returns([TestBodyBeginning1Plugin.new, TestBodyBeginning2Plugin.new])
 
     get :index
@@ -455,6 +461,8 @@ class ApplicationControllerTest < ActionController::TestCase
       end
     end
 
+    Noosfero::Plugin.stubs(:all).returns([TestHeadEnding1Plugin.name, TestHeadEnding2Plugin.name])
+
     Noosfero::Plugin::Manager.any_instance.stubs(:enabled_plugins).returns([TestHeadEnding1Plugin.new, TestHeadEnding2Plugin.new])
 
     get :index
@@ -519,6 +527,7 @@ class ApplicationControllerTest < ActionController::TestCase
           :block => lambda {} }
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([FilterPlugin.name])
 
     Noosfero::Plugin::Manager.any_instance.stubs(:enabled_plugins).returns([FilterPlugin.new])
 
@@ -537,6 +546,7 @@ class ApplicationControllerTest < ActionController::TestCase
           :block => lambda {'plugin block called'} }
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([OtherFilterPlugin.name])
 
     environment1 = fast_create(Environment, :name => 'test environment')
     environment1.enable_plugin(OtherFilterPlugin.name)
diff --git a/test/functional/catalog_controller_test.rb b/test/functional/catalog_controller_test.rb
index ac9aa8b..5cf2efb 100644
--- a/test/functional/catalog_controller_test.rb
+++ b/test/functional/catalog_controller_test.rb
@@ -91,6 +91,7 @@ class CatalogControllerTest < ActionController::TestCase
         lambda {"<span id='plugin2'>This is Plugin2 speaking!</span>"}
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
 
     product = fast_create(Product, :profile_id => @enterprise.id)
     environment = Environment.default
diff --git a/test/functional/content_viewer_controller_test.rb b/test/functional/content_viewer_controller_test.rb
index 408f550..704cef3 100644
--- a/test/functional/content_viewer_controller_test.rb
+++ b/test/functional/content_viewer_controller_test.rb
@@ -1199,6 +1199,7 @@ class ContentViewerControllerTest < ActionController::TestCase
     class Plugin2 < Noosfero::Plugin
       def content_remove_edit(content); false; end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
 
     environment.enable_plugin(Plugin1.name)
     environment.enable_plugin(Plugin2.name)
@@ -1215,6 +1216,7 @@ class ContentViewerControllerTest < ActionController::TestCase
     class Plugin2 < Noosfero::Plugin
       def content_expire_edit(content); nil; end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
 
     environment.enable_plugin(Plugin1.name)
     environment.enable_plugin(Plugin2.name)
@@ -1260,6 +1262,7 @@ class ContentViewerControllerTest < ActionController::TestCase
          }
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
 
     Environment.default.enable_plugin(Plugin1.name)
     Environment.default.enable_plugin(Plugin2.name)
@@ -1284,6 +1287,7 @@ class ContentViewerControllerTest < ActionController::TestCase
         scope.where(:referrer => 'kernel.org')
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
 
     Environment.default.enable_plugin(Plugin1)
     Environment.default.enable_plugin(Plugin2)
@@ -1341,6 +1345,7 @@ class ContentViewerControllerTest < ActionController::TestCase
          }
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
 
     Environment.default.enable_plugin(Plugin1.name)
     Environment.default.enable_plugin(Plugin2.name)
diff --git a/test/functional/enterprise_registration_controller_test.rb b/test/functional/enterprise_registration_controller_test.rb
index 958b05a..71596a3 100644
--- a/test/functional/enterprise_registration_controller_test.rb
+++ b/test/functional/enterprise_registration_controller_test.rb
@@ -193,6 +193,7 @@ class EnterpriseRegistrationControllerTest < ActionController::TestCase
         {'plugin2' => 'Plugin 2'}
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
 
     environment = Environment.default
     environment.enable_plugin(Plugin1.name)
diff --git a/test/functional/friends_controller_test.rb b/test/functional/friends_controller_test.rb
index 7284321..d9128b9 100644
--- a/test/functional/friends_controller_test.rb
+++ b/test/functional/friends_controller_test.rb
@@ -68,6 +68,7 @@ class FriendsControllerTest < ActionController::TestCase
         false
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
 
     e = profile.environment
     e.enable_plugin(Plugin1.name)
diff --git a/test/functional/home_controller_test.rb b/test/functional/home_controller_test.rb
index 99233ef..453d025 100644
--- a/test/functional/home_controller_test.rb
+++ b/test/functional/home_controller_test.rb
@@ -107,6 +107,7 @@ class HomeControllerTest < ActionController::TestCase
         lambda {"<a href='plugin2'>Plugin2 link</a>"}
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
 
     Environment.default.enable_plugin(Plugin1)
     Environment.default.enable_plugin(Plugin2)
@@ -129,6 +130,7 @@ class HomeControllerTest < ActionController::TestCase
         true
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
     Noosfero::Plugin::Manager.any_instance.stubs(:enabled_plugins).returns([Plugin1.new, Plugin2.new])
 
     get :index
diff --git a/test/functional/memberships_controller_test.rb b/test/functional/memberships_controller_test.rb
index bb24c14..39d65e8 100644
--- a/test/functional/memberships_controller_test.rb
+++ b/test/functional/memberships_controller_test.rb
@@ -234,6 +234,7 @@ class MembershipsControllerTest < ActionController::TestCase
         {'plugin2' => 'Plugin 2'}
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.name, Plugin2.name])
 
     environment = Environment.default
     environment.enable_plugin(Plugin1.name)
diff --git a/test/functional/plugins_controller_test.rb b/test/functional/plugins_controller_test.rb
index 46b0889..9478f4e 100644
--- a/test/functional/plugins_controller_test.rb
+++ b/test/functional/plugins_controller_test.rb
@@ -47,7 +47,7 @@ class PluginsControllerTest < ActionController::TestCase
       end
     end
 
-    Noosfero::Plugin.stubs(:all).returns([Plugin1.to_s,Plugin2.to_s])
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.to_s, Plugin2.to_s])
 
     get :index
 
diff --git a/test/functional/profile_controller_test.rb b/test/functional/profile_controller_test.rb
index eac86e3..e0f9d58 100644
--- a/test/functional/profile_controller_test.rb
+++ b/test/functional/profile_controller_test.rb
@@ -1255,6 +1255,7 @@ class ProfileControllerTest < ActionController::TestCase
         {:title => 'Plugin2 tab', :id => 'plugin2_tab', :content => lambda { 'Content from plugin2.' }}
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.to_s, Plugin2.to_s])
 
     e = profile.environment
     e.enable_plugin(Plugin1.name)
diff --git a/test/functional/profile_editor_controller_test.rb b/test/functional/profile_editor_controller_test.rb
index 274df70..e3fe9bf 100644
--- a/test/functional/profile_editor_controller_test.rb
+++ b/test/functional/profile_editor_controller_test.rb
@@ -868,6 +868,7 @@ class ProfileEditorControllerTest < ActionController::TestCase
         {:title => "Plugin2 button", :icon => 'plugin2_icon', :url => 'plugin2_url'}
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([TestControlPanelButtons1.to_s, TestControlPanelButtons2.to_s])
 
     Noosfero::Plugin::Manager.any_instance.stubs(:enabled_plugins).returns([TestControlPanelButtons1.new, TestControlPanelButtons2.new])
 
@@ -883,6 +884,7 @@ class ProfileEditorControllerTest < ActionController::TestCase
         "<input id='field_added_by_plugin' value='value_of_field_added_by_plugin'/>"
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([TestProfileEditPlugin.to_s])
 
     Noosfero::Plugin::Manager.any_instance.stubs(:enabled_plugins).returns([TestProfileEditPlugin.new])
 
@@ -911,6 +913,7 @@ class ProfileEditorControllerTest < ActionController::TestCase
         lambda {"<strong>Plugin2 text</strong>"}
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.to_s, Plugin2.to_s])
 
     Environment.default.enable_plugin(Plugin1)
     Environment.default.enable_plugin(Plugin2)
@@ -932,6 +935,7 @@ class ProfileEditorControllerTest < ActionController::TestCase
         lambda {"<strong>Plugin2 text</strong>"}
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.to_s, Plugin2.to_s])
 
     Environment.default.enable_plugin(Plugin1)
     Environment.default.enable_plugin(Plugin2)
diff --git a/test/functional/search_controller_test.rb b/test/functional/search_controller_test.rb
index da563a6..c91bd04 100644
--- a/test/functional/search_controller_test.rb
+++ b/test/functional/search_controller_test.rb
@@ -163,6 +163,7 @@ class SearchControllerTest < ActionController::TestCase
         lambda {"<span id='plugin2'>This is Plugin2 speaking!</span>"}
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.to_s, Plugin2.to_s])
 
     enterprise = fast_create(Enterprise)
     prod_cat = fast_create(ProductCategory)
@@ -189,6 +190,7 @@ class SearchControllerTest < ActionController::TestCase
         return { :name => _('Property2'), :content => lambda { link_to(product.name, '/plugin2') } }
       end
     end
+    Noosfero::Plugin.stubs(:all).returns([Plugin1.to_s, Plugin2.to_s])
     enterprise = fast_create(Enterprise)
     prod_cat = fast_create(ProductCategory)
     product = fast_create(Product, {:profile_id => enterprise.id, :name => "produto1", :product_category_id => prod_cat.id}, :search => true)
diff --git a/test/unit/application_helper_test.rb b/test/unit/application_helper_test.rb
index 7106acd..09c06f2 100644
--- a/test/unit/application_helper_test.rb
+++ b/test/unit/application_helper_test.rb
@@ -676,6 +676,7 @@ class ApplicationHelperTest < ActiveSupport::TestCase
   should 'parse macros' do
     class Plugin1 < Noosfero::Plugin
     end
+    Noosfero::Plugin.stubs(:all).returns(['ApplicationHelperTest::Plugin1'])
 
     class Plugin1::Macro1 < Noosfero::Plugin::Macro
       def parse(params, inner_html, source)
diff --git a/test/unit/comment_test.rb b/test/unit/comment_test.rb
index 28a3d94..fe76131 100644
--- a/test/unit/comment_test.rb
+++ b/test/unit/comment_test.rb
@@ -468,8 +468,8 @@ class CommentTest < ActiveSupport::TestCase
     end
   end
 
-
   should 'delegate spam detection to plugins' do
+    Noosfero::Plugin.stubs(:all).returns(['CommentTest::EverythingIsSpam'])
     Environment.default.enable_plugin(EverythingIsSpam)
 
     c1 = create_comment
@@ -495,6 +495,7 @@ class CommentTest < ActiveSupport::TestCase
   end
 
   should 'notify plugins of comments being marked as spam' do
+    Noosfero::Plugin.stubs(:all).returns(['CommentTest::SpamNotification'])
     Environment.default.enable_plugin(SpamNotification)
 
     c = create_comment
@@ -506,6 +507,7 @@ class CommentTest < ActiveSupport::TestCase
   end
 
   should 'notify plugins of comments being marked as ham' do
+    Noosfero::Plugin.stubs(:all).returns(['CommentTest::SpamNotification'])
     Environment.default.enable_plugin(SpamNotification)
 
     c = create_comment
diff --git a/test/unit/forgot_password_helper_test.rb b/test/unit/forgot_password_helper_test.rb
index 60d3120..6f980cb 100644
--- a/test/unit/forgot_password_helper_test.rb
+++ b/test/unit/forgot_password_helper_test.rb
@@ -22,6 +22,7 @@ class ForgotPasswordHelperTest < ActionView::TestCase
          {:field => 'f3', :name => 'F3', :model => 'person'}]
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['ForgotPasswordHelperTest::Plugin1', 'ForgotPasswordHelperTest::Plugin2'])
 
     environment.enable_plugin(Plugin1)
     environment.enable_plugin(Plugin2)
@@ -43,6 +44,7 @@ class ForgotPasswordHelperTest < ActionView::TestCase
          {:field => 'f3', :name => 'F3', :model => 'person'}]
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['ForgotPasswordHelperTest::Plugin1', 'ForgotPasswordHelperTest::Plugin2'])
 
     environment.enable_plugin(Plugin1)
     environment.enable_plugin(Plugin2)
@@ -64,6 +66,7 @@ class ForgotPasswordHelperTest < ActionView::TestCase
          {:field => 'f3', :name => 'F3', :model => 'user'}]
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['ForgotPasswordHelperTest::Plugin1', 'ForgotPasswordHelperTest::Plugin2'])
 
     environment.enable_plugin(Plugin1)
     environment.enable_plugin(Plugin2)
@@ -85,6 +88,7 @@ class ForgotPasswordHelperTest < ActionView::TestCase
          {:field => 'f3', :name => 'F3', :model => 'user'}]
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['ForgotPasswordHelperTest::Plugin1', 'ForgotPasswordHelperTest::Plugin2'])
 
     environment.enable_plugin(Plugin1)
     environment.enable_plugin(Plugin2)
diff --git a/test/unit/macros_helper_test.rb b/test/unit/macros_helper_test.rb
index 7a961c5..112ebcd 100644
--- a/test/unit/macros_helper_test.rb
+++ b/test/unit/macros_helper_test.rb
@@ -28,6 +28,7 @@ class MacrosHelperTest < ActiveSupport::TestCase
   end
 
   def setup
+    Noosfero::Plugin.stubs(:all).returns(['MacrosHelperTest::Plugin1'])
     @environment = Environment.default
     @environment.enable_plugin(Plugin1)
     @plugins = Noosfero::Plugin::Manager.new(@environment, self)
diff --git a/test/unit/person_test.rb b/test/unit/person_test.rb
index 5c7d867..d6d39cb 100644
--- a/test/unit/person_test.rb
+++ b/test/unit/person_test.rb
@@ -1255,6 +1255,7 @@ class PersonTest < ActiveSupport::TestCase
         false
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['PersonTest::Plugin1', 'PersonTest::Plugin2'])
 
     e = Environment.default
     e.enable_plugin(Plugin1.name)
@@ -1424,6 +1425,7 @@ class PersonTest < ActiveSupport::TestCase
         Profile.memberships_of(Person.find_by_identifier('person2'))
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['PersonTest::Plugin1', 'PersonTest::Plugin2'])
 
     Environment.default.enable_plugin(Plugin1)
     Environment.default.enable_plugin(Plugin2)
diff --git a/test/unit/plugin_manager_test.rb b/test/unit/plugin_manager_test.rb
index a9f9603..8d3374d 100644
--- a/test/unit/plugin_manager_test.rb
+++ b/test/unit/plugin_manager_test.rb
@@ -26,6 +26,7 @@ class PluginManagerTest < ActiveSupport::TestCase
     class Plugin2 < Noosfero::Plugin; end;
     class Plugin3 < Noosfero::Plugin; end;
     class Plugin4 < Noosfero::Plugin; end;
+    Noosfero::Plugin.stubs(:all).returns(['PluginManagerTest::Plugin1', 'PluginManagerTest::Plugin2', 'PluginManagerTest::Plugin3', 'PluginManagerTest::Plugin4'])
     environment.stubs(:enabled_plugins).returns([Plugin1.to_s, Plugin2.to_s, Plugin4.to_s])
     Noosfero::Plugin.stubs(:all).returns([Plugin1.to_s, Plugin3.to_s, Plugin4.to_s])
     results = plugins.enabled_plugins.map { |instance| instance.class.to_s }
@@ -51,6 +52,7 @@ class PluginManagerTest < ActiveSupport::TestCase
         'Plugin 2 action.'
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['PluginManagerTest::Plugin1', 'PluginManagerTest::Plugin2'])
 
     environment.stubs(:enabled_plugins).returns([Plugin1.to_s, Plugin2.to_s])
 
@@ -83,6 +85,7 @@ class PluginManagerTest < ActiveSupport::TestCase
         'Plugin 3 action.'
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['PluginManagerTest::Plugin1', 'PluginManagerTest::Plugin2', 'PluginManagerTest::Plugin3'])
 
     environment.stubs(:enabled_plugins).returns([Plugin1.to_s, Plugin2.to_s, Plugin3.to_s])
     p1 = Plugin1.new
@@ -107,6 +110,7 @@ class PluginManagerTest < ActiveSupport::TestCase
         'Plugin3'
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['PluginManagerTest::Plugin1', 'PluginManagerTest::Plugin2', 'PluginManagerTest::Plugin3'])
 
     environment.enable_plugin(Plugin1.name)
     environment.enable_plugin(Plugin2.name)
@@ -134,6 +138,7 @@ class PluginManagerTest < ActiveSupport::TestCase
         true
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['PluginManagerTest::Plugin1', 'PluginManagerTest::Plugin2', 'PluginManagerTest::Plugin3'])
 
     environment.enable_plugin(Plugin1.name)
     environment.enable_plugin(Plugin2.name)
@@ -162,6 +167,7 @@ class PluginManagerTest < ActiveSupport::TestCase
         true
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['PluginManagerTest::Plugin1', 'PluginManagerTest::Plugin2', 'PluginManagerTest::Plugin3'])
 
     environment.enable_plugin(Plugin1.name)
     environment.enable_plugin(Plugin2.name)
@@ -178,6 +184,7 @@ class PluginManagerTest < ActiveSupport::TestCase
         [Macro1, Macro2]
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['PluginManagerTest::Plugin1'])
 
     class Plugin1::Macro1 < Noosfero::Plugin::Macro
       def convert(macro, source)
@@ -212,6 +219,7 @@ class PluginManagerTest < ActiveSupport::TestCase
         [v1 * v, v2 * v]
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['PluginManagerTest::Plugin1', 'PluginManagerTest::Plugin2'])
 
     environment.enable_plugin(Plugin1)
     environment.enable_plugin(Plugin2)
@@ -231,6 +239,7 @@ class PluginManagerTest < ActiveSupport::TestCase
         value * 5
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['PluginManagerTest::Plugin1', 'PluginManagerTest::Plugin2'])
 
     environment.enable_plugin(Plugin1)
     environment.enable_plugin(Plugin2)
@@ -252,6 +261,7 @@ class PluginManagerTest < ActiveSupport::TestCase
         [v1 * v, v2 * v, 666]
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['PluginManagerTest::Plugin1', 'PluginManagerTest::Plugin2'])
 
     environment.enable_plugin(Plugin1)
     environment.enable_plugin(Plugin2)
@@ -273,6 +283,7 @@ class PluginManagerTest < ActiveSupport::TestCase
         numbers.reject {|n| n<=5}
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['PluginManagerTest::Plugin1', 'PluginManagerTest::Plugin2'])
 
     environment.enable_plugin(Plugin1)
     environment.enable_plugin(Plugin2)
diff --git a/test/unit/plugin_test.rb b/test/unit/plugin_test.rb
index 50cc012..1db0350 100644
--- a/test/unit/plugin_test.rb
+++ b/test/unit/plugin_test.rb
@@ -9,15 +9,9 @@ class PluginTest < ActiveSupport::TestCase
 
   include Noosfero::Plugin::HotSpot
 
-  should 'keep the list of all loaded subclasses' do
-    class Plugin1 < Noosfero::Plugin
-    end
-
-    class Plugin2 < Noosfero::Plugin
-    end
-
-    assert_includes  Noosfero::Plugin.all, Plugin1.to_s
-    assert_includes  Noosfero::Plugin.all, Plugin2.to_s
+  should 'keep the list of all available plugins' do
+    assert File.directory?(File.join(Rails.root, 'plugins', 'foo'))
+    assert_includes  Noosfero::Plugin.all, 'FooPlugin'
   end
 
   should 'returns url to plugin management if plugin has admin_controller' do
diff --git a/test/unit/profile_test.rb b/test/unit/profile_test.rb
index f06c0ff..27c4526 100644
--- a/test/unit/profile_test.rb
+++ b/test/unit/profile_test.rb
@@ -1812,6 +1812,7 @@ class ProfileTest < ActiveSupport::TestCase
         Person.members_of(Community.find_by_identifier('community2'))
       end
     end
+    Noosfero::Plugin.stubs(:all).returns(['ProfileTest::Plugin1', 'ProfileTest::Plugin2'])
     Environment.default.enable_plugin(Plugin1)
     Environment.default.enable_plugin(Plugin2)
 
@@ -1969,6 +1970,7 @@ class ProfileTest < ActiveSupport::TestCase
     end
 
     environment = Environment.default
+    Noosfero::Plugin.stubs(:all).returns(['ProfileTest::Plugin1'])
     environment.enable_plugin(Plugin1)
     plugins = Noosfero::Plugin::Manager.new(environment, self)
     p = fast_create(Profile)
diff --git a/test/unit/suggest_article_test.rb b/test/unit/suggest_article_test.rb
index b85a405..6dacbeb 100644
--- a/test/unit/suggest_article_test.rb
+++ b/test/unit/suggest_article_test.rb
@@ -7,6 +7,7 @@ class SuggestArticleTest < ActiveSupport::TestCase
     ActionMailer::Base.perform_deliveries = true
     ActionMailer::Base.deliveries = []
     @profile = create_user('test_user').person
+    Noosfero::Plugin.stubs(:all).returns(['SuggestArticleTest::EverythingIsSpam', 'SuggestArticleTest::SpamNotification'])
   end
   attr_reader :profile
 
--
libgit2 0.21.2