How to clean redis all db?

[takanamito]

It looks like database_cleaner[:redis] clean only a selected db.
https://github.com/DatabaseCleaner/database_cleaner/blob/f052d64d3be9351a98a99e932a59be528ccc561c/lib/database_cleaner/redis/truncation.rb#L10-L23

In my case, application uses multiple redis db.
So I'd prefer to use not redis.flushdb but redis.flushall.

Can I use redis.flushall in database_cleaner?

[etagwerker]

@takanamito Have you tried configuring multiple connections with DatabaseCleaner? You can see a couple of examples over here: https://github.com/DatabaseCleaner/database_cleaner#how-to-use-with-multiple-orms

[takanamito]

@etagwerker Thank you for your advice.

I tried multiple connections config.
But it's not good for me.

I uses multiple redis db in rspec.

Hosts:

redis://localhost:6379/1
redis://localhost:6379/2
redis://localhost:6379/3

And DatabaseCleaner config

config.after(:example) do
  (1..3).each do |db|
    DatabaseCleaner[:redis].db = "redis://localhost:6379/#{db}"
    DatabaseCleaner.clean
  end
  binding.pry
end


# execution log
# @db: "redis://localhost:6379/3"
# but @connection is "redis://localhost:6379/1"
[1] pry(#<RSpec::ExampleGroups::MySpec>)> DatabaseCleaner[:redis]
=> #<DatabaseCleaner::Base:0x00563f8f436730
 @db="redis://localhost:6379/3",
 @orm=:redis,
 @strategy=
  #<DatabaseCleaner::Redis::Truncation:0x00563f8f4247d8
   @cache_tables=true,
   @connection=#<Redis client v3.3.5 for redis://localhost:6379/1>,
   @db="redis://localhost:6379/3",
   @only=nil,
   @pre_count=nil,
   @reset_ids=nil,
   @tables_to_exclude=[]>>

DatabaseCleaner::Redis#connection methods has @connection variable.
https://github.com/DatabaseCleaner/database_cleaner/blob/master/lib/database_cleaner/redis/base.rb#L24-L34

I think that,
The instance variable is called, when Database.clean.
And always uses first connection that point to redis://localhost:6379/1.

---

If it's ok, I would like to send a patch adding options redis.flushall.