Error running rake spec on new rails app without a migration

[esambo]

Error

PG::ObjectInUse: ERROR:  database "foo_test" is being accessed by other users
DETAIL:  There is 1 other session using the database.
: DROP DATABASE IF EXISTS "foo_test"
Couldn't drop database 'foo_test'
rails aborted!
ActiveRecord::StatementInvalid: PG::ObjectInUse: ERROR:  database "foo_test" is being accessed by other users
DETAIL:  There is 1 other session using the database.
: DROP DATABASE IF EXISTS "foo_test"
PG::ObjectInUse: ERROR:  database "foo_test" is being accessed by other users
DETAIL:  There is 1 other session using the database.

New rails app with RSpec

bundle exec rake --trace

without prodder (works fine without an error)

** Invoke spec (first_time)
** Invoke spec:prepare (first_time)
** Execute spec:prepare
** Execute spec

with prodder (errors)

** Invoke spec (first_time)
** Invoke spec:prepare (first_time)
** Execute spec:prepare
** Invoke test:prepare (first_time)
** Invoke db:test:prepare (first_time)
** Execute db:test:prepare
** Invoke db:reset (first_time)
** Invoke db:drop (first_time)
** Invoke db:load_config (first_time)
** Execute db:load_config
** Execute db:drop
No permissions file (db/permissions.sql) found, running everything in context of user
Dropped database 'foo_test'
** Invoke db:setup (first_time)
** Invoke db:create (first_time)
** Invoke db:load_config
** Execute db:create
No permissions file (db/permissions.sql) found, running everything in context of user
Created database 'foo_test'
** Invoke db:structure:load (first_time)
** Invoke db:load_config
** Execute db:structure:load
Loading db/structure.sql into database 'foo_test'
** Invoke db:seed (first_time)
** Invoke db:load_config
** Execute db:seed
db/seeds.sql not found: no seeds to load.
** Invoke db:quality_check (first_time)
** Invoke db:load_config
** Execute db:quality_check
db/quality_checks.sql not found: no quality_checks to load.
** Invoke db:permission (first_time)
** Invoke db:load_config
** Execute db:permission
db/permissions.sql not found: no permissions to load.
** Invoke db:settings (first_time)
** Invoke db:load_config
** Execute db:settings
Loading db/settings.sql into database 'foo_test'
** Execute db:setup
** Execute db:reset
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
** Invoke db:load_config
** Execute db:migrate
No permissions file (db/permissions.sql) found, running everything in context of user
** Execute test:prepare
** Execute spec
~/.rubies/ruby-2.3.3/bin/ruby -I~/.gem/ruby/2.3.3/gems/rspec-core-3.5.4/lib:~/.gem/ruby/2.3.3/gems/rspec-support-3.5.0/lib ~/.gem/ruby/2.3.3/gems/rspec-core-3.5.4/exe/rspec --pattern spec/\*\*\{,/\*/\*\*\}/\*_spec.rb
No permissions file (db/permissions.sql) found, running everything in context of user
PG::ObjectInUse: ERROR:  database "foo_test" is being accessed by other users
DETAIL:  There is 1 other session using the database.
: DROP DATABASE IF EXISTS "foo_test"
Couldn't drop database 'foo_test'
rails aborted!
ActiveRecord::StatementInvalid: PG::ObjectInUse: ERROR:  database "foo_test" is being accessed by other users
DETAIL:  There is 1 other session using the database.
: DROP DATABASE IF EXISTS "foo_test"
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:98:in `async_exec'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:98:in `block in execute'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/connection_adapters/abstract_adapter.rb:589:in `block in log'
~/.gem/ruby/2.3.3/gems/activesupport-5.0.1/lib/active_support/notifications/instrumenter.rb:21:in `instrument'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/connection_adapters/abstract_adapter.rb:583:in `log'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:97:in `execute'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/connection_adapters/postgresql/schema_statements.rb:70:in `drop_database'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/tasks/postgresql_database_tasks.rb:28:in `drop'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/tasks/database_tasks.rb:136:in `drop'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/tasks/database_tasks.rb:152:in `block in drop_current'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/tasks/database_tasks.rb:292:in `block in each_current_configuration'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/tasks/database_tasks.rb:291:in `each'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/tasks/database_tasks.rb:291:in `each_current_configuration'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/tasks/database_tasks.rb:151:in `drop_current'
~/.gem/ruby/2.3.3/gems/prodder-1.7.1/lib/prodder/prodder.rake:156:in `block (3 levels) in <top (required)>'
~/.gem/ruby/2.3.3/gems/prodder-1.7.1/lib/prodder/prodder.rake:368:in `as'
~/.gem/ruby/2.3.3/gems/prodder-1.7.1/lib/prodder/prodder.rake:155:in `block (2 levels) in <top (required)>'
~/.gem/ruby/2.3.3/gems/prodder-1.7.1/lib/prodder/prodder.rake:295:in `block (3 levels) in <top (required)>'
~/.gem/ruby/2.3.3/gems/railties-5.0.1/lib/rails/commands/rake_proxy.rb:14:in `block in run_rake_task'
~/.gem/ruby/2.3.3/gems/railties-5.0.1/lib/rails/commands/rake_proxy.rb:11:in `run_rake_task'
~/.gem/ruby/2.3.3/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:51:in `run_command!'
~/.gem/ruby/2.3.3/gems/railties-5.0.1/lib/rails/commands.rb:18:in `<top (required)>'
bin/rails:5:in `require'
bin/rails:5:in `<main>'
PG::ObjectInUse: ERROR:  database "foo_test" is being accessed by other users
DETAIL:  There is 1 other session using the database.
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:98:in `async_exec'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:98:in `block in execute'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/connection_adapters/abstract_adapter.rb:589:in `block in log'
~/.gem/ruby/2.3.3/gems/activesupport-5.0.1/lib/active_support/notifications/instrumenter.rb:21:in `instrument'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/connection_adapters/abstract_adapter.rb:583:in `log'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:97:in `execute'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/connection_adapters/postgresql/schema_statements.rb:70:in `drop_database'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/tasks/postgresql_database_tasks.rb:28:in `drop'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/tasks/database_tasks.rb:136:in `drop'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/tasks/database_tasks.rb:152:in `block in drop_current'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/tasks/database_tasks.rb:292:in `block in each_current_configuration'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/tasks/database_tasks.rb:291:in `each'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/tasks/database_tasks.rb:291:in `each_current_configuration'
~/.gem/ruby/2.3.3/gems/activerecord-5.0.1/lib/active_record/tasks/database_tasks.rb:151:in `drop_current'
~/.gem/ruby/2.3.3/gems/prodder-1.7.1/lib/prodder/prodder.rake:156:in `block (3 levels) in <top (required)>'
~/.gem/ruby/2.3.3/gems/prodder-1.7.1/lib/prodder/prodder.rake:368:in `as'
~/.gem/ruby/2.3.3/gems/prodder-1.7.1/lib/prodder/prodder.rake:155:in `block (2 levels) in <top (required)>'
~/.gem/ruby/2.3.3/gems/prodder-1.7.1/lib/prodder/prodder.rake:295:in `block (3 levels) in <top (required)>'
~/.gem/ruby/2.3.3/gems/railties-5.0.1/lib/rails/commands/rake_proxy.rb:14:in `block in run_rake_task'
~/.gem/ruby/2.3.3/gems/railties-5.0.1/lib/rails/commands/rake_proxy.rb:11:in `run_rake_task'
~/.gem/ruby/2.3.3/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:51:in `run_command!'
~/.gem/ruby/2.3.3/gems/railties-5.0.1/lib/rails/commands.rb:18:in `<top (required)>'
bin/rails:5:in `require'
bin/rails:5:in `<main>'
Tasks: TOP => db:reset => db:drop

Workaround

Add an empty migration

def up
  say 'Prodder wants at least one migration'
end

def down
  fail ActiveRecord::IrreversibleMigration
end

Potential fixes

1. Fix it and have it do nothing just like plain active_record would do
2. Document it in the README