diff --git a/app/controllers/dashboard/poster_controller.rb b/app/controllers/dashboard/poster_controller.rb
index 5fbd85adf..8bb155c10 100644
--- a/app/controllers/dashboard/poster_controller.rb
+++ b/app/controllers/dashboard/poster_controller.rb
@@ -5,7 +5,7 @@ class Dashboard::PosterController < Dashboard::BaseController
     respond_to do |format|
       format.html
       format.pdf do
-        render pdf: 'poster', page_size: 'A3'
+        render pdf: 'poster', page_size: 'A3', show_as_html: Rails.env.test?
       end
     end
   end
diff --git a/app/models/dashboard/action.rb b/app/models/dashboard/action.rb
index 45818c23b..3bff7fd9f 100644
--- a/app/models/dashboard/action.rb
+++ b/app/models/dashboard/action.rb
@@ -77,8 +77,4 @@ class Dashboard::Action < ActiveRecord::Base
   def self.next_goal_for(proposal)
     course_for(proposal).first
   end
-
-  def request_to_administrators?
-    request_to_administrators || false
-  end
 end
diff --git a/app/models/poll.rb b/app/models/poll.rb
index be313d75b..8bf4b485b 100644
--- a/app/models/poll.rb
+++ b/app/models/poll.rb
@@ -104,9 +104,10 @@ class Poll < ActiveRecord::Base
   end
 
   def only_one_active
-    if Poll.overlaping_with(self).any?
-      errors.add(:starts_at, I18n.t('activerecord.errors.messages.another_poll_active'))
-    end
+    return unless starts_at.present?
+    return unless ends_at.present?
+    return unless Poll.overlaping_with(self).any?
+    errors.add(:starts_at, I18n.t('activerecord.errors.messages.another_poll_active'))
   end
 
   def public?
diff --git a/app/models/proposal_dashboard_action.rb b/app/models/proposal_dashboard_action.rb
deleted file mode 100644
index 221034ce5..000000000
--- a/app/models/proposal_dashboard_action.rb
+++ /dev/null
@@ -1,88 +0,0 @@
-class ProposalDashboardAction < ActiveRecord::Base
-  include Documentable
-  documentable max_documents_allowed: 3,
-               max_file_size: 3.megabytes,
-               accepted_content_types: [ 'application/pdf' ]
-
-  include Linkable
-
-  acts_as_paranoid column: :hidden_at
-  include ActsAsParanoidAliases
-
-  has_many :proposal_executed_dashboard_actions, dependent: :restrict_with_error
-  has_many :proposals, through: :proposal_executed_dashboard_actions
-
-  enum action_type: [:proposed_action, :resource]
-
-  validates :title, 
-            presence: true,
-            allow_blank: false,
-            length: { in: 4..80 }
-
-  validates :action_type, presence: true
-
-  validates :day_offset,
-            presence: true,
-            numericality: {
-              only_integer: true,
-              greater_than_or_equal_to: 0
-            }
-
-  validates :required_supports,
-            presence: true,
-            numericality: {
-              only_integer: true,
-              greater_than_or_equal_to: 0
-            }
-
-  scope :active, -> { where(active: true) }
-  scope :inactive, -> { where(active: false) }
-  scope :resources, -> { where(action_type: 1) }
-  scope :proposed_actions, -> { where(action_type: 0) }
-  scope :active_for, ->(proposal) do 
-    published_at = proposal.published_at&.to_date || Date.today
-
-    active
-      .where('required_supports <= ?', proposal.votes_for.size)
-      .where('day_offset <= ?', (Date.today - published_at).to_i)
-  end
-
-  scope :course_for, lambda { |proposal|
-    active
-      .resources
-      .where('required_supports > ?', proposal.votes_for.size)
-      .order(required_supports: :asc)
-  }
-
-  def active_for?(proposal)
-    published_at = proposal.published_at&.to_date || Date.today
-
-    required_supports <= proposal.votes_for.size && day_offset <= (Date.today - published_at).to_i
-  end
-
-  def requested_for?(proposal)
-    executed_action = proposal_executed_dashboard_actions.find_by(proposal: proposal)
-    return false if executed_action.nil?
-
-    executed_action.administrator_tasks.any?
-  end
-
-  def executed_for?(proposal)
-    executed_action = proposal_executed_dashboard_actions.find_by(proposal: proposal)
-    return false if executed_action.nil?
-
-    executed_action.administrator_tasks.where.not(executed_at: nil).any?
-  end
-
-  def self.next_goal_for(proposal)
-    course_for(proposal).first
-  end
-
-  def request_to_administrators?
-    request_to_administrators || false
-  end
-
-  def request_to_administrators?
-    request_to_administrators
-  end
-end
diff --git a/app/models/proposal_executed_dashboard_action.rb b/app/models/proposal_executed_dashboard_action.rb
deleted file mode 100644
index 8b7b2f918..000000000
--- a/app/models/proposal_executed_dashboard_action.rb
+++ /dev/null
@@ -1,10 +0,0 @@
-class ProposalExecutedDashboardAction < ActiveRecord::Base
-  belongs_to :proposal
-  belongs_to :proposal_dashboard_action
-
-  has_many :administrator_tasks, as: :source, dependent: :destroy
-
-  validates :proposal, presence: true, uniqueness: { scope: :proposal_dashboard_action }
-  validates :proposal_dashboard_action, presence: true
-  validates :executed_at, presence: true
-end
diff --git a/spec/factories.rb b/spec/factories.rb
index 2e875c90f..3baecfb1d 100644
--- a/spec/factories.rb
+++ b/spec/factories.rb
@@ -1038,7 +1038,7 @@ LOREM_IPSUM
   end
 
   factory :dashboard_action, class: 'Dashboard::Action' do
-    title { Faker::Lorem.sentence[0..80] }
+    title { Faker::Lorem.sentence[0..79] }
     description { Faker::Lorem.sentence }
     link nil
     request_to_administrators true
diff --git a/spec/features/admin/dashboard/actions_spec.rb b/spec/features/admin/dashboard/actions_spec.rb
index 55a00d19a..3d790eac4 100644
--- a/spec/features/admin/dashboard/actions_spec.rb
+++ b/spec/features/admin/dashboard/actions_spec.rb
@@ -47,6 +47,11 @@ feature 'Admin dashboard actions' do
 
       expect(page).to have_content(action.title)
     end
+
+    scenario 'Renders create form in case data is invalid' do
+      click_button 'Save'
+      expect(page).to have_content('errors prevented this Dashboard/Action from being saved.')
+    end
   end
 
   context 'when editing an action' do
@@ -64,6 +69,12 @@ feature 'Admin dashboard actions' do
 
       expect(page).to have_content(title)
     end
+
+    scenario 'Renders edit form in case data is invalid' do
+      fill_in 'dashboard_action_title', with: 'x'
+      click_button 'Save'
+      expect(page).to have_content('error prevented this Dashboard/Action from being saved.')
+    end
   end
 
   context 'when destroying an action' do
@@ -80,5 +91,15 @@ feature 'Admin dashboard actions' do
 
       expect(page).not_to have_content(action.title)
     end
+
+    scenario 'can not delete actions that have been executed', js: true do
+      _executed_action = create(:dashboard_executed_action, action: action)
+
+      page.accept_confirm do
+        click_link 'Delete'
+      end
+
+      expect(page).to have_content('Cannot delete record because dependent executed actions exist')
+    end
   end
 end
diff --git a/spec/features/dashboard/dashboard_spec.rb b/spec/features/dashboard/dashboard_spec.rb
index 269eb567a..4d03fb353 100644
--- a/spec/features/dashboard/dashboard_spec.rb
+++ b/spec/features/dashboard/dashboard_spec.rb
@@ -126,6 +126,18 @@ feature "Proposal's dashboard" do
     expect(page).to have_content('The request for the administrator has been successfully sent.')
   end
 
+  scenario 'Request already requested resource with admin request', js: true do
+    feature = create(:dashboard_action, :resource, :active, :admin_request)
+
+    visit proposal_dashboard_index_path(proposal)
+    click_link(feature.title)
+
+    create(:dashboard_executed_action, action: feature, proposal: proposal)
+
+    click_button 'Request'
+    expect(page).to have_content('Proposal has already been taken')
+  end
+
   scenario 'Resource without admin request do not have a request link', js: true do
     feature = create(:dashboard_action, :resource, :active)
 
diff --git a/spec/features/dashboard/polls_spec.rb b/spec/features/dashboard/polls_spec.rb
index 9e95b7b9f..b0a2dc09f 100644
--- a/spec/features/dashboard/polls_spec.rb
+++ b/spec/features/dashboard/polls_spec.rb
@@ -19,13 +19,13 @@ feature 'Polls' do
     start_date = 1.week.from_now
     end_date = 2.weeks.from_now
 
-    fill_in "poll_name", with: "Upcoming poll"
-    fill_in 'poll_starts_at', with: start_date.strftime("%d/%m/%Y")
-    fill_in 'poll_ends_at', with: end_date.strftime("%d/%m/%Y")
+    fill_in "poll_name", with: 'Upcoming poll'
+    fill_in 'poll_starts_at', with: start_date.strftime('%d/%m/%Y')
+    fill_in 'poll_ends_at', with: end_date.strftime('%d/%m/%Y')
     fill_in 'poll_description', with: "Upcomming poll's description. This poll..."
 
-    expect(page).not_to have_css("#poll_results_enabled")
-    expect(page).not_to have_css("#poll_stats_enabled")
+    expect(page).not_to have_css('#poll_results_enabled')
+    expect(page).not_to have_css('#poll_stats_enabled')
 
     click_link 'Add question'
 
@@ -34,13 +34,22 @@ feature 'Polls' do
     click_link 'Add answer'
     fill_in 'Title', with: 'First answer'
 
-    click_button "Create poll"
+    click_button 'Create poll'
 
-    expect(page).to have_content "Poll created successfully"
-    expect(page).to have_content "Upcoming poll"
+    expect(page).to have_content 'Poll created successfully'
+    expect(page).to have_content 'Upcoming poll'
     expect(page).to have_content I18n.l(start_date.to_date)
   end
 
+  scenario 'Create a poll redirects back to form when invalid data', js: true do
+    click_link 'Polls'
+    click_link 'Create poll'
+
+    click_button 'Create poll'
+
+    expect(page).to have_content('New poll')
+  end
+
   scenario 'Edit poll is allowed for upcoming polls' do
     poll = create(:poll, :incoming, related: proposal)
     
@@ -57,6 +66,24 @@ feature 'Polls' do
     expect(page).to have_content 'Poll updated successfully'
   end
 
+  scenario 'Edit poll redirects back when invalid data', js: true do
+    poll = create(:poll, :incoming, related: proposal)
+    
+    visit proposal_dashboard_polls_path(proposal)
+
+    within "div#poll_#{poll.id}" do
+      expect(page).to have_content('Edit survey')
+
+      click_link 'Edit survey'
+    end
+
+    fill_in "poll_name", with: ''
+
+    click_button 'Update poll'
+
+    expect(page).to have_content('Edit poll')
+  end
+
   scenario 'Edit poll is not allowed for current polls' do
     poll = create(:poll, :current, related: proposal)
     
diff --git a/spec/features/dashboard/poster_spec.rb b/spec/features/dashboard/poster_spec.rb
index b245dead3..73d9dccb9 100644
--- a/spec/features/dashboard/poster_spec.rb
+++ b/spec/features/dashboard/poster_spec.rb
@@ -29,5 +29,14 @@ feature 'Poster' do
     expect(page).not_to have_link('Preview')
     expect(page).to have_link('Download')
   end
+
+  scenario 'PDF contains the proposal details', js: true do
+    click_link 'Download'
+
+    page.driver.browser.switch_to.window page.driver.browser.window_handles.last do
+      expect(page).to have_content(proposal.title)
+      expect(page).to have_content(proposal.code)
+    end
+  end
 end
 
diff --git a/spec/rails_helper.rb b/spec/rails_helper.rb
index d353073df..379703518 100644
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -1,3 +1,8 @@
+unless ENV['TRAVIS']
+  require 'simplecov'
+  SimpleCov.start 'rails'
+end
+
 ENV['RAILS_ENV'] ||= 'test'
 if ENV['TRAVIS']
   require 'coveralls'