Only *configure* the queue in setup; DB creation must come later

setup gets called from the initializer, so it happens more than once in
a test run. Trying to drop the database again after the first process is
connected is.. ineffective. And entirely pointless.

Instead, defer creating the database to start_workers -- which only
happens once, right before we start doing anything real.

activejob/test/support/integration/adapters/que.rb

@@ -2,6 +2,15 @@ module QueJobsManager
   def setup
     require 'sequel'
     ActiveJob::Base.queue_adapter = :que
+    Que.mode = :off
+    Que.worker_count = 1
+  end
+
+  def clear_jobs
+    Que.clear!
+  end
+
+  def start_workers
     que_url = ENV['QUE_DATABASE_URL'] || 'postgres:///active_jobs_que_int_test'
     uri = URI.parse(que_url)
     user = uri.user||ENV['USER']
@@ -11,24 +20,17 @@ module QueJobsManager
     %x{#{"PGPASSWORD=\"#{pass}\"" if pass} psql -c 'create database "#{db}"' -U #{user} -t template1}
     Que.connection = Sequel.connect(que_url)
     Que.migrate!
-    Que.mode = :off
-    Que.worker_count = 1
-  rescue Sequel::DatabaseConnectionError
-    puts "Cannot run integration tests for que. To be able to run integration tests for que you need to install and start postgresql.\n"
-    exit
-  end
 
-  def clear_jobs
-    Que.clear!
-  end
-
-  def start_workers
     @thread = Thread.new do
       loop do
         Que::Job.work("integration_tests")
         sleep 0.5
       end
     end
+
+  rescue Sequel::DatabaseConnectionError
+    puts "Cannot run integration tests for que. To be able to run integration tests for que you need to install and start postgresql.\n"
+    exit
   end
 
   def stop_workers

activejob/test/support/integration/adapters/queue_classic.rb

@@ -3,17 +3,7 @@ module QueueClassicJobsManager
     ENV['QC_DATABASE_URL'] ||= 'postgres:///active_jobs_qc_int_test'
     ENV['QC_RAILS_DATABASE'] = 'false'
     ENV['QC_LISTEN_TIME']    = "0.5"
-    uri = URI.parse(ENV['QC_DATABASE_URL'])
-    user = uri.user||ENV['USER']
-    pass = uri.password
-    db   = uri.path[1..-1]
-    %x{#{"PGPASSWORD=\"#{pass}\"" if pass} psql -c 'drop database if exists "#{db}"' -U #{user} -t template1}
-    %x{#{"PGPASSWORD=\"#{pass}\"" if pass} psql -c 'create database "#{db}"' -U #{user} -t template1}
     ActiveJob::Base.queue_adapter = :queue_classic
-    QC::Setup.create
-  rescue PG::ConnectionBad
-    puts "Cannot run integration tests for queue_classic. To be able to run integration tests for queue_classic you need to install and start postgresql.\n"
-    exit
   end
 
   def clear_jobs
@@ -21,12 +11,24 @@ module QueueClassicJobsManager
   end
 
   def start_workers
+    uri = URI.parse(ENV['QC_DATABASE_URL'])
+    user = uri.user||ENV['USER']
+    pass = uri.password
+    db   = uri.path[1..-1]
+    %x{#{"PGPASSWORD=\"#{pass}\"" if pass} psql -c 'drop database if exists "#{db}"' -U #{user} -t template1}
+    %x{#{"PGPASSWORD=\"#{pass}\"" if pass} psql -c 'create database "#{db}"' -U #{user} -t template1}
+    QC::Setup.create
+
     QC.default_conn_adapter.disconnect
     QC.default_conn_adapter = nil
     @pid = fork do
       worker = QC::Worker.new(q_name: 'integration_tests')
       worker.start
     end
+
+  rescue PG::ConnectionBad
+    puts "Cannot run integration tests for queue_classic. To be able to run integration tests for queue_classic you need to install and start postgresql.\n"
+    exit
   end
 
   def stop_workers