diff --git a/spec/fixtures/rails b/spec/fixtures/rails
new file mode 100755
index 00000000..03b8d5b5
--- /dev/null
+++ b/spec/fixtures/rails
@@ -0,0 +1,7 @@
+#!/usr/bin/env ruby
+# This command will automatically be run when you run "rails" with Rails gems
+# installed from the root of your application.
+
+APP_PATH = File.expand_path('../../../../spec/dummy/config/application', __dir__)
+
+require 'rails/all'
diff --git a/spec/generators/graphql_devise/install_generator_spec.rb b/spec/generators/graphql_devise/install_generator_spec.rb
index fcca3bc1..6a6484ca 100644
--- a/spec/generators/graphql_devise/install_generator_spec.rb
+++ b/spec/generators/graphql_devise/install_generator_spec.rb
@@ -3,17 +3,18 @@
 require 'generators/graphql_devise/install_generator'
 
 RSpec.describe GraphqlDevise::InstallGenerator, type: :generator do
-  destination File.expand_path('../../../tmp', __FILE__)
+  destination File.expand_path('../../../tmp/dummy', __dir__)
 
   before do
     prepare_destination
+    copy_rails_bin
   end
 
   let(:routes_path)    { "#{destination_root}/config/routes.rb" }
   let(:routes_content) { File.read(routes_path) }
   let(:dta_route)      { "mount_devise_token_auth_for 'User', at: 'auth'" }
 
-  xcontext 'when the file exists' do
+  context 'when the file exists' do
     before do
       create_file_with_content(
         routes_path,
@@ -42,11 +43,16 @@
     end
   end
 
-  xcontext 'when file does *NOT* exist' do
+  context 'when file does *NOT* exist' do
     before { run_generator }
 
     it 'does *NOT* create the file and throw no exception' do
-      expect(File.exist?(routes_path)).to be_falsey
+      expect(File).not_to exist(routes_path)
     end
   end
+
+  def copy_rails_bin
+    FileUtils.mkdir_p(File.join(destination_root, 'bin'))
+    FileUtils.copy_file('spec/fixtures/rails', File.join(destination_root, 'bin/rails'))
+  end
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 6fc99bcb..041c624f 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -4,7 +4,7 @@
 
   SimpleCov.formatter = Coveralls::SimpleCov::Formatter
   SimpleCov.start 'rails' do
-    add_filter ['spec', 'lib/generators']
+    add_filter ['spec']
   end
 end