Merge pull request #2419 from dmitriy-kiriyenko/drop_test_database_in_development_when_running_rake_db_drop

When running "rake db:drop" also drop test database in development environment

activerecord/lib/active_record/railties/databases.rake

@@ -37,11 +37,7 @@ db_namespace = namespace :db do
 
   desc 'Create the database from config/database.yml for the current Rails.env (use db:create:all to create all dbs in the config)'
   task :create => :load_config do
-    # Make the test database at the same time as the development one, if it exists
-    if Rails.env.development? && ActiveRecord::Base.configurations['test']
-      create_database(ActiveRecord::Base.configurations['test'])
-    end
-    create_database(ActiveRecord::Base.configurations[Rails.env])
+    configs_for_environment.each { |config| create_database(config) }
   end
 
   def mysql_creation_options(config)
@@ -138,12 +134,7 @@ db_namespace = namespace :db do
 
   desc 'Drops the database for the current Rails.env (use db:drop:all to drop all databases)'
   task :drop => :load_config do
-    config = ActiveRecord::Base.configurations[Rails.env || 'development']
-    begin
-      drop_database(config)
-    rescue Exception => e
-      $stderr.puts "Couldn't drop #{config['database']} : #{e.inspect}"
-    end
+    configs_for_environment.each { |config| drop_database_and_rescue(config) }
   end
 
   def local_database?(config, &block)
@@ -548,6 +539,19 @@ def drop_database(config)
   end
 end
 
+def drop_database_and_rescue(config)
+  begin
+    drop_database(config)
+  rescue Exception => e
+    $stderr.puts "Couldn't drop #{config['database']} : #{e.inspect}"
+  end
+end
+
+def configs_for_environment
+  environments = [Rails.env, ("test" if Rails.env.development?)]
+  ActiveRecord::Base.configurations.values_at(*environments).compact
+end
+
 def session_table_name
   ActiveRecord::SessionStore::Session.table_name
 end