diff --git a/app/controllers/custom_workflows_controller.rb b/app/controllers/custom_workflows_controller.rb
index 399e4b2..347b4cc 100644
--- a/app/controllers/custom_workflows_controller.rb
+++ b/app/controllers/custom_workflows_controller.rb
@@ -65,8 +65,6 @@ class CustomWorkflowsController < ApplicationController
     end
   end
 
-  def edit; end
-
   def new
     @workflow = CustomWorkflow.new
     @workflow.author = cookies[:custom_workflows_author]
@@ -75,6 +73,8 @@ class CustomWorkflowsController < ApplicationController
     end
   end
 
+  def edit; end
+
   def import
     xml = params[:file].read
     begin
diff --git a/app/models/custom_workflow.rb b/app/models/custom_workflow.rb
index 6513395..6f8e483 100644
--- a/app/models/custom_workflow.rb
+++ b/app/models/custom_workflow.rb
@@ -15,7 +15,7 @@
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
-# You should have received a copy of the GNU General Public License
+# You should have received a copy of the GN73U General Public License
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
@@ -70,7 +70,7 @@ class CustomWorkflow < ApplicationRecord
   end
 
   def self.log_message(str, object)
-    Rails.logger.info "#{str} for #{object.class} (\##{object.id}) \"#{object}\""
+    Rails.logger.info "#{str} for #{object.class} (##{object.id}) \"#{object}\""
   end
 
   def self.run_shared_code(object)
diff --git a/db/migrate/20110915084858_create_custom_workflows.rb b/db/migrate/20110915084858_create_custom_workflows.rb
index d5d6ad3..2d7d485 100644
--- a/db/migrate/20110915084858_create_custom_workflows.rb
+++ b/db/migrate/20110915084858_create_custom_workflows.rb
@@ -25,7 +25,7 @@ class CreateCustomWorkflows < ActiveRecord::Migration[4.2]
     create_table :custom_workflows, force: true do |t|
       t.references :project
       t.text :script, null: true, default: nil
-      t.boolean :is_enabled
+      t.boolean :is_enabled, null: false, default: false
       t.timestamps
       t.index :project_id, unique: true
     end
diff --git a/db/migrate/20120601054047_alter_custom_workflows.rb b/db/migrate/20120601054047_alter_custom_workflows.rb
index 5fc2b3a..a7cf08a 100644
--- a/db/migrate/20120601054047_alter_custom_workflows.rb
+++ b/db/migrate/20120601054047_alter_custom_workflows.rb
@@ -34,7 +34,7 @@ class AlterCustomWorkflows < ActiveRecord::Migration[4.2]
   def down
     change_table(:custom_workflows, bulk: true) do |t|
       t.references :project
-      t.boolean :is_enabled
+      t.boolean :is_enabled, null: false, default: false
       t.remove :name
       t.remove :description
       t.remove :position
diff --git a/lib/redmine_custom_workflows/patches/controllers/attachments_controller_patch.rb b/lib/redmine_custom_workflows/patches/controllers/attachments_controller_patch.rb
index 335686c..4ec9742 100644
--- a/lib/redmine_custom_workflows/patches/controllers/attachments_controller_patch.rb
+++ b/lib/redmine_custom_workflows/patches/controllers/attachments_controller_patch.rb
@@ -52,7 +52,7 @@ module RedmineCustomWorkflows
             next if o&.custom_workflow_messages&.empty?
 
             o.custom_workflow_messages.each do |key, value|
-              if value&.present?
+              if value.present?
                 flash[key] = value
               else
                 flash.delete key
diff --git a/lib/redmine_custom_workflows/patches/controllers/groups_controller_patch.rb b/lib/redmine_custom_workflows/patches/controllers/groups_controller_patch.rb
index e872731..e28fc87 100644
--- a/lib/redmine_custom_workflows/patches/controllers/groups_controller_patch.rb
+++ b/lib/redmine_custom_workflows/patches/controllers/groups_controller_patch.rb
@@ -52,7 +52,7 @@ module RedmineCustomWorkflows
             next if o&.custom_workflow_messages&.empty?
 
             o.custom_workflow_messages.each do |key, value|
-              if value&.present?
+              if value.present?
                 flash[key] = value
               else
                 flash.delete key
diff --git a/lib/redmine_custom_workflows/patches/controllers/issue_relations_controller_patch.rb b/lib/redmine_custom_workflows/patches/controllers/issue_relations_controller_patch.rb
index 1fef439..d8e785d 100644
--- a/lib/redmine_custom_workflows/patches/controllers/issue_relations_controller_patch.rb
+++ b/lib/redmine_custom_workflows/patches/controllers/issue_relations_controller_patch.rb
@@ -52,7 +52,7 @@ module RedmineCustomWorkflows
             next if o&.custom_workflow_messages&.empty?
 
             o.custom_workflow_messages.each do |key, value|
-              if value&.present?
+              if value.present?
                 flash[key] = value
               else
                 flash.delete key
diff --git a/lib/redmine_custom_workflows/patches/controllers/issues_controller_patch.rb b/lib/redmine_custom_workflows/patches/controllers/issues_controller_patch.rb
index 6ac894f..e0e1a62 100644
--- a/lib/redmine_custom_workflows/patches/controllers/issues_controller_patch.rb
+++ b/lib/redmine_custom_workflows/patches/controllers/issues_controller_patch.rb
@@ -52,7 +52,7 @@ module RedmineCustomWorkflows
             next if o&.custom_workflow_messages&.empty?
 
             o.custom_workflow_messages.each do |key, value|
-              if value&.present?
+              if value.present?
                 flash[key] = value
               else
                 flash.delete key
diff --git a/lib/redmine_custom_workflows/patches/controllers/members_controller_patch.rb b/lib/redmine_custom_workflows/patches/controllers/members_controller_patch.rb
index 73af62b..6a51da4 100644
--- a/lib/redmine_custom_workflows/patches/controllers/members_controller_patch.rb
+++ b/lib/redmine_custom_workflows/patches/controllers/members_controller_patch.rb
@@ -52,7 +52,7 @@ module RedmineCustomWorkflows
             next if o&.custom_workflow_messages&.empty?
 
             o.custom_workflow_messages.each do |key, value|
-              if value&.present?
+              if value.present?
                 flash[key] = value
               else
                 flash.delete key
diff --git a/lib/redmine_custom_workflows/patches/controllers/projects_controller_patch.rb b/lib/redmine_custom_workflows/patches/controllers/projects_controller_patch.rb
index 732cf09..b172ea6 100644
--- a/lib/redmine_custom_workflows/patches/controllers/projects_controller_patch.rb
+++ b/lib/redmine_custom_workflows/patches/controllers/projects_controller_patch.rb
@@ -52,7 +52,7 @@ module RedmineCustomWorkflows
             next if o&.custom_workflow_messages&.empty?
 
             o.custom_workflow_messages.each do |key, value|
-              if value&.present?
+              if value.present?
                 flash[key] = value
               else
                 flash.delete key
diff --git a/lib/redmine_custom_workflows/patches/controllers/timelog_controller_patch.rb b/lib/redmine_custom_workflows/patches/controllers/timelog_controller_patch.rb
index 0ae4311..df0218a 100644
--- a/lib/redmine_custom_workflows/patches/controllers/timelog_controller_patch.rb
+++ b/lib/redmine_custom_workflows/patches/controllers/timelog_controller_patch.rb
@@ -52,7 +52,7 @@ module RedmineCustomWorkflows
             next if o&.custom_workflow_messages&.empty?
 
             o.custom_workflow_messages.each do |key, value|
-              if value&.present?
+              if value.present?
                 flash[key] = value
               else
                 flash.delete key
diff --git a/lib/redmine_custom_workflows/patches/controllers/users_controller_patch.rb b/lib/redmine_custom_workflows/patches/controllers/users_controller_patch.rb
index 597382a..2fa4e1d 100644
--- a/lib/redmine_custom_workflows/patches/controllers/users_controller_patch.rb
+++ b/lib/redmine_custom_workflows/patches/controllers/users_controller_patch.rb
@@ -52,7 +52,7 @@ module RedmineCustomWorkflows
             next if o&.custom_workflow_messages&.empty?
 
             o.custom_workflow_messages.each do |key, value|
-              if value&.present?
+              if value.present?
                 flash[key] = value
               else
                 flash.delete key
diff --git a/lib/redmine_custom_workflows/patches/controllers/versions_controller_patch.rb b/lib/redmine_custom_workflows/patches/controllers/versions_controller_patch.rb
index feb8038..a6abcb1 100644
--- a/lib/redmine_custom_workflows/patches/controllers/versions_controller_patch.rb
+++ b/lib/redmine_custom_workflows/patches/controllers/versions_controller_patch.rb
@@ -52,7 +52,7 @@ module RedmineCustomWorkflows
             next if o&.custom_workflow_messages&.empty?
 
             o.custom_workflow_messages.each do |key, value|
-              if value&.present?
+              if value.present?
                 flash[key] = value
               else
                 flash.delete key
diff --git a/lib/redmine_custom_workflows/patches/controllers/wiki_controller_patch.rb b/lib/redmine_custom_workflows/patches/controllers/wiki_controller_patch.rb
index 7613782..b013632 100644
--- a/lib/redmine_custom_workflows/patches/controllers/wiki_controller_patch.rb
+++ b/lib/redmine_custom_workflows/patches/controllers/wiki_controller_patch.rb
@@ -52,7 +52,7 @@ module RedmineCustomWorkflows
             next if o&.custom_workflow_messages&.empty?
 
             o.custom_workflow_messages.each do |key, value|
-              if value&.present?
+              if value.present?
                 flash[key] = value
               else
                 flash.delete key
diff --git a/test/functional/attachments_controller_patch_test.rb b/test/functional/attachments_controller_patch_test.rb
index 915c636..eaf6c11 100644
--- a/test/functional/attachments_controller_patch_test.rb
+++ b/test/functional/attachments_controller_patch_test.rb
@@ -28,18 +28,18 @@ class AttachmentsControllerPatchTest < RedmineCustomWorkflows::Test::TestCase
   def setup
     super
     @attachment8 = Attachment.find 8
-    @request.session[:user_id] = @jsmith.id
+    post '/login', params: { username: 'jsmith', password: 'jsmith' }
     @controller = AttachmentsController.new
   end
 
   def test_delete_with_cw
-    delete :destroy, params: { id: @attachment8.id }
+    delete "/attachments/#{@attachment8.id}"
     assert_response :redirect
     assert_equal 'Custom workflow', @controller.flash[:notice]
   end
 
   def test_cw_env
-    delete :destroy, params: { id: @attachment8.id }
+    delete "/attachments/#{@attachment8.id}"
     assert_response :redirect
     assert_equal request.remote_ip, @controller.flash[:warning]
   end
diff --git a/test/functional/custom_workflows_controller_test.rb b/test/functional/custom_workflows_controller_test.rb
index ca3a3c4..c26e05e 100644
--- a/test/functional/custom_workflows_controller_test.rb
+++ b/test/functional/custom_workflows_controller_test.rb
@@ -28,8 +28,6 @@ class CustomWorkflowsControllerTest < RedmineCustomWorkflows::Test::TestCase
   def setup
     super
     @cw1 = CustomWorkflow.find 1
-    User.current = nil
-    @request.session[:user_id] = @admin.id
   end
 
   def test_truth
@@ -37,13 +35,14 @@ class CustomWorkflowsControllerTest < RedmineCustomWorkflows::Test::TestCase
   end
 
   def test_index_admin
-    get :index
+    post '/login', params: { username: 'admin', password: 'admin' }
+    get '/custom_workflows'
     assert_response :success
   end
 
   def test_index_non_admin
-    @request.session[:user_id] = @jsmith.id
-    get :index
+    post '/login', params: { username: 'jsmith', password: 'jsmith' }
+    get '/custom_workflows'
     assert_response :forbidden
   end
 end
diff --git a/test/functional/groups_controller_patch_test.rb b/test/functional/groups_controller_patch_test.rb
index 63c8f72..8fc4d3b 100644
--- a/test/functional/groups_controller_patch_test.rb
+++ b/test/functional/groups_controller_patch_test.rb
@@ -28,22 +28,22 @@ class GroupControllerPatchTest < RedmineCustomWorkflows::Test::TestCase
   def setup
     super
     @group10 = Group.find 10
-    @request.session[:user_id] = @admin.id
+    post '/login', params: { username: 'admin', password: 'admin' }
     @controller = GroupsController.new
-    default_url_options[:host] = 'test.host'
+    default_url_options[:host] = 'www.example.com'
   end
 
   def test_update_with_cw
     @request.headers['Referer'] = edit_group_path(id: @group10.id)
-    put :update, params: { id: @group10.id, group: { name: 'Updated name' } }
-    assert_redirected_to edit_group_path(id: @group10.id)
+    put "/groups/#{@group10.id}", params: { group: { name: 'Updated name' } }
+    assert_redirected_to groups_path
     assert_equal 'Custom workflow', @controller.flash[:notice]
   end
 
   def test_cw_env
     @request.headers['Referer'] = edit_group_path(id: @group10.id)
-    put :update, params: { id: @group10.id, group: { name: 'Updated name' } }
-    assert_redirected_to edit_group_path(id: @group10.id)
+    put "/groups/#{@group10.id}/", params: { group: { name: 'Updated name' } }
+    assert_redirected_to groups_path
     assert_equal request.remote_ip, @controller.flash[:warning]
   end
 end
diff --git a/test/functional/issue_relations_controller_patch_test.rb b/test/functional/issue_relations_controller_patch_test.rb
index b2387de..b74c817 100644
--- a/test/functional/issue_relations_controller_patch_test.rb
+++ b/test/functional/issue_relations_controller_patch_test.rb
@@ -29,18 +29,18 @@ class IssueRelationsControllerPatchTest < RedmineCustomWorkflows::Test::TestCase
   def setup
     super
     @ir1 = IssueRelation.find 1
-    @request.session[:user_id] = @jsmith.id
+    post '/login', params: { username: 'jsmith', password: 'jsmith' }
     @controller = AttachmentsController.new
   end
 
   def test_delete_with_cw
-    delete :destroy, params: { id: @ir1 }
+    delete "/relations/#{@ir1.id}"
     assert_response :redirect
     assert_equal 'Custom workflow', @controller.flash[:notice]
   end
 
   def test_cw_env
-    delete :destroy, params: { id: @ir1 }
+    delete "/relations/#{@ir1.id}"
     assert_response :redirect
     assert_equal request.remote_ip, @controller.flash[:warning]
   end
diff --git a/test/functional/issues_controller_patch_test.rb b/test/functional/issues_controller_patch_test.rb
index bfb91af..3fe8216 100644
--- a/test/functional/issues_controller_patch_test.rb
+++ b/test/functional/issues_controller_patch_test.rb
@@ -29,26 +29,26 @@ class IssuesControllerPatchTest < RedmineCustomWorkflows::Test::TestCase
   def setup
     super
     @issue1 = Issue.find 1
-    @request.session[:user_id] = @jsmith.id
+    post '/login', params: { username: 'jsmith', password: 'jsmith' }
     @controller = IssuesController.new
   end
 
   def test_update_with_cw
-    put :update, params: { id: @issue1.id, issue: { subject: 'Updated subject' } }
-    assert_redirected_to action: 'show', id: @issue1.id
+    put "/issues/#{@issue1.id}", params: { issue: { subject: 'Updated subject' } }
+    assert_redirected_to issue_path(@issue1)
     assert_equal 'Custom workflow', @controller.flash[:notice]
   end
 
   def test_delete_with_cw
-    delete :destroy, params: { id: @issue1.id, todo: 'destroy' }
+    delete "/issues/#{@issue1.id}", params: { todo: 'destroy' }
     assert_response :redirect
     assert_equal 'Issue cannot be deleted', @controller.flash[:error]
     assert Issue.find_by(id: @issue1.id)
   end
 
   def test_cw_env
-    put :update, params: { id: @issue1.id, issue: { subject: 'Updated subject' } }
-    assert_redirected_to action: 'show', id: @issue1.id
+    put "/issues/#{@issue1.id}", params: { issue: { subject: 'Updated subject' } }
+    assert_redirected_to issue_path(@issue1)
     assert_equal request.remote_ip, @controller.flash[:warning]
   end
 end
diff --git a/test/functional/members_controller_patch_test.rb b/test/functional/members_controller_patch_test.rb
index 8100115..cd964ff 100644
--- a/test/functional/members_controller_patch_test.rb
+++ b/test/functional/members_controller_patch_test.rb
@@ -27,18 +27,18 @@ class MembersControllerPatchTest < RedmineCustomWorkflows::Test::TestCase
   def setup
     super
     @member1 = Member.find 1
-    @request.session[:user_id] = @jsmith.id
+    post '/login', params: { username: 'jsmith', password: 'jsmith' }
     @controller = MembersController.new
   end
 
   def test_delete_with_cw
-    delete :destroy, params: { id: @member1 }
+    delete "/memberships/#{@member1.id}"
     assert_response :redirect
     assert_equal 'Custom workflow', @controller.flash[:notice]
   end
 
   def test_cw_env
-    delete :destroy, params: { id: @member1 }
+    delete "/memberships/#{@member1.id}"
     assert_response :redirect
     assert_equal request.remote_ip, @controller.flash[:warning]
   end
diff --git a/test/functional/projects_controller_patch_test.rb b/test/functional/projects_controller_patch_test.rb
index bdae4e7..74c703e 100644
--- a/test/functional/projects_controller_patch_test.rb
+++ b/test/functional/projects_controller_patch_test.rb
@@ -27,18 +27,18 @@ class ProjectsControllerPatchTest < RedmineCustomWorkflows::Test::TestCase
 
   def setup
     super
-    @request.session[:user_id] = @jsmith.id
+    post '/login', params: { username: 'jsmith', password: 'jsmith' }
     @controller = ProjectsController.new
   end
 
   def test_update_with_cw
-    post :update, params: { id: @project1.id, project: { name: 'Updated name' } }
+    patch "/projects/#{@project1.id}", params: { project: { name: 'Updated name' } }
     assert_redirected_to settings_project_path(@project1)
     assert_equal 'Custom workflow', @controller.flash[:notice]
   end
 
   def test_cw_env
-    post :update, params: { id: @project1.id, project: { name: 'Updated name' } }
+    patch "/projects/#{@project1.id}", params: { project: { name: 'Updated name' } }
     assert_redirected_to settings_project_path(@project1)
     assert_equal request.remote_ip, @controller.flash[:warning]
   end
diff --git a/test/functional/timelog_controller_patch_test.rb b/test/functional/timelog_controller_patch_test.rb
index 2b7d97a..123c9d1 100644
--- a/test/functional/timelog_controller_patch_test.rb
+++ b/test/functional/timelog_controller_patch_test.rb
@@ -29,18 +29,18 @@ class TimelogControllerPatchTest < RedmineCustomWorkflows::Test::TestCase
   def setup
     super
     @te1 = TimeEntry.find 1
-    @request.session[:user_id] = @jsmith.id
+    post '/login', params: { username: 'jsmith', password: 'jsmith' }
     @controller = TimelogController.new
   end
 
   def test_delete_with_cw
-    delete :destroy, params: { id: @te1 }
+    delete "/time_entries/#{@te1.id}"
     assert_response :redirect
     assert_equal 'Custom workflow', @controller.flash[:notice]
   end
 
   def test_cw_env
-    delete :destroy, params: { id: @te1 }
+    delete "/time_entries/#{@te1.id}"
     assert_response :redirect
     assert_equal request.remote_ip, @controller.flash[:warning]
   end
diff --git a/test/functional/users_controller_patch_test.rb b/test/functional/users_controller_patch_test.rb
index 9c8444d..3d3a7d0 100644
--- a/test/functional/users_controller_patch_test.rb
+++ b/test/functional/users_controller_patch_test.rb
@@ -26,19 +26,19 @@ class UsersControllerPatchTest < RedmineCustomWorkflows::Test::TestCase
 
   def setup
     super
-    @request.session[:user_id] = @admin.id
+    post '/login', params: { username: 'admin', password: 'admin' }
     @controller = UsersController.new
   end
 
   def test_update_with_cw
-    put :update, params: { id: @jsmith.id, user: { lastname: 'updated_lastname' } }
-    assert_redirected_to edit_user_path(id: @jsmith.id)
+    put "/users/#{@jsmith.id}", params: { user: { lastname: 'updated_lastname' } }
+    assert_redirected_to edit_user_path(@jsmith)
     assert_equal 'Custom workflow', @controller.flash[:notice]
   end
 
   def test_cw_env
-    put :update, params: { id: @jsmith.id, user: { lastname: 'updated_lastname' } }
-    assert_redirected_to edit_user_path(id: @jsmith.id)
+    put "/users/#{@jsmith.id}", params: { user: { lastname: 'updated_lastname' } }
+    assert_redirected_to edit_user_path(@jsmith)
     assert_equal request.remote_ip, @controller.flash[:warning]
   end
 end
diff --git a/test/functional/versions_controller_patch_test.rb b/test/functional/versions_controller_patch_test.rb
index 372c397..b533ef4 100644
--- a/test/functional/versions_controller_patch_test.rb
+++ b/test/functional/versions_controller_patch_test.rb
@@ -27,18 +27,18 @@ class VersionsControllerPatchTest < RedmineCustomWorkflows::Test::TestCase
   def setup
     super
     @version1 = Version.find 1
-    @request.session[:user_id] = @jsmith.id
+    post '/login', params: { username: 'jsmith', password: 'jsmith' }
     @controller = VersionsController.new
   end
 
   def test_update_with_cw
-    put :update, params: { id: @version1.id, version: { name: 'Updated version' } }
+    put "/versions/#{@version1.id}", params: { version: { name: 'Updated version' } }
     assert_redirected_to settings_project_path(id: @project1, tab: 'versions')
     assert_equal 'Custom workflow', @controller.flash[:notice]
   end
 
   def test_cw_env
-    put :update, params: { id: @version1.id, version: { name: 'Updated version' } }
+    put "/versions/#{@version1.id}", params: { version: { name: 'Updated version' } }
     assert_redirected_to settings_project_path(id: @project1, tab: 'versions')
     assert_equal request.remote_ip, @controller.flash[:warning]
   end
diff --git a/test/functional/wiki_controller_patch_test.rb b/test/functional/wiki_controller_patch_test.rb
index eb7b322..e066ee7 100644
--- a/test/functional/wiki_controller_patch_test.rb
+++ b/test/functional/wiki_controller_patch_test.rb
@@ -29,15 +29,13 @@ class WikiControllerPatchTest < RedmineCustomWorkflows::Test::TestCase
   def setup
     super
     @wp1 = WikiPage.find 1
-    @request.session[:user_id] = @jsmith.id
+    post '/login', params: { username: 'jsmith', password: 'jsmith' }
     @controller = WikiController.new
   end
 
   def test_update_with_cw
-    put :update,
+    put "/projects/#{@projects1.id}/wiki/Another_page",
         params: {
-          project_id: @project1.id,
-          id: 'Another_page',
           content: { comments: 'my comments', text: 'edited', version: 1 }
         }
     assert_response :redirect
diff --git a/test/test_case.rb b/test/test_case.rb
index 6849c57..d4cecb7 100644
--- a/test/test_case.rb
+++ b/test/test_case.rb
@@ -22,7 +22,7 @@
 module RedmineCustomWorkflows
   module Test
     # Test case base class
-    class TestCase < ActionController::TestCase
+    class TestCase < ActionDispatch::IntegrationTest
       fixtures :users, :email_addresses, :projects
 
       # Allow us to override the fixtures method to implement fixtures for our plugin.