Rails 5, Rspec: Environment data not found in the schema

Question

After upgrading a Rails app to Rails 5, running RSpec tests gives me the following error:

rails aborted!
ActiveRecord::NoEnvironmentInSchemaError: 

Environm         


        

Answer 1

For me, I had to do a mixture of things:

bin/rails db:environment:set RAILS_ENV=test
bin/rails db:migrate RAILS_ENV=test

This would make things work, and then I had to review my migrations, I was adding a null:false into a relationship and that added a bug, the migration was cancelled and didn't finish

Answer 2

If you happen to see this error while using parallel_tests gem then you need to run below command for each DB. Just increase TEST_ENV_NUMBER.

TEST_ENV_NUMBER=1 bin/rails db:environment:set RAILS_ENV=test
TEST_ENV_NUMBER=2 bin/rails db:environment:set RAILS_ENV=test

This helped me fix the problem when I was testing parallel_tests with knapsack_pro gem https://github.com/KnapsackPro/knapsack_pro-ruby#parallel_tests-with-knapsack_pro-on-single-ci-machine

Answer 3

New Rails 5 command to generate binstubs:

rails app:update:bin

Allows me to run the solution as the error suggested:

bin/rails db:environment:set RAILS_ENV=test

Tip from @max comment: If you are using database_cleaner and this error keeps popping up then change your config to:

DatabaseCleaner.clean_with(
  :truncation,
  except: %w(ar_internal_metadata)
)

Answer 4

For me, this error was followed by a similar one asking for a migration.

This did the trick: rails db:migrate RAILS_ENV=test

Answer 5

All of the above answers are correct, however, if you're in a more unique project such as developing a rails engine with a concept of a schema (hacky, I know) and your migration fails for some reason, you can re-run it without the check that throws this exception. Example:

rake environment db:{drop,create,migrate} DISABLE_DATABASE_ENVIRONMENT_CHECK=1

Answer 6

fix for jenkins before you drop database you should execute db:environment:set with || true, so the command doesn't abort:

bin/rails db:environment:set RAILS_ENV=test || true