[DRE-maint] Bug#945210: ruby-redis-namespace ftbfs with ruby-redis 4 in experimental

[Pirate Praveen]

Package: ruby-redis-namespace
version: 1.6.0-1
severity: important

This package fails to build with ruby-redis 4 in experimental and 
blocking its upload to unstable.

RUBYLIB=/<<PKGBUILDDIR>>/debian/ruby-redis-namespace/usr/lib/ruby/vendor_ruby:. 
GEM_PATH=debian/ruby-redis-namespace/usr/share/rubygems-integration/all:/var/lib/gems/2.5.0:/usr/lib/ruby/gems/2.5.0:/usr/share/rubygems-integration/2.5.0:/usr/share/rubygems-integration/all:/usr/lib/x86_64-linux-gnu/rubygems-integration/2.5.0 
ruby2.5 -S rake -f debian/ruby-tests.rake
/usr/bin/ruby2.5 /usr/bin/rspec --pattern ./spec/\*\*/\*_spec.rb
.................The client method is deprecated as of redis-rb 4.0.0, 
please use the new _clientmethod instead. Support for the old method 
will be removed in redis-namespace 2.0.
FThe client method is deprecated as of redis-rb 4.0.0, please use the 
new _clientmethod instead. Support for the old method will be removed 
in redis-namespace 2.0.
FF..........F.........................................................................

Failures:

  1) redis proxies `client` to the _client and deprecated
     Failure/Error: expect(@namespaced.client).to eq(@redis.client)

     Redis::CommandError:
       ERR Unknown subcommand or wrong number of arguments for ''. Try 
CLIENT HELP
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis/client.rb:126:in 
`call'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:222:in 
`block in client'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:52:in 
`block in synchronize'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:52:in 
`synchronize'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:221:in 
`client'
     # ./spec/redis_spec.rb:29:in `block (2 levels) in <top (required)>'

  2) redis proxies `_client` to the _client
     Failure/Error: expect(@namespaced.client).to eq(@redis.client)

     Redis::CommandError:
       ERR Unknown subcommand or wrong number of arguments for ''. Try 
CLIENT HELP
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis/client.rb:126:in 
`call'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:222:in 
`block in client'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:52:in 
`block in synchronize'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:52:in 
`synchronize'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:221:in 
`client'
     # ./spec/redis_spec.rb:33:in `block (2 levels) in <top (required)>'

  3) redis should be able to use a namespace
     Failure/Error: result = @redis.send(command, *args, &block)

     Redis::CommandError:
       ERR unknown command `[]`, with args beginning with: `ns:foo`,
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis/client.rb:126:in 
`call'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:3311:in 
`block in method_missing'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:52:in 
`block in synchronize'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:52:in 
`synchronize'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:3310:in 
`method_missing'
     # ./lib/redis/namespace.rb:442:in `call_with_namespace'
     # ./lib/redis/namespace.rb:328:in `method_missing'
     # ./spec/redis_spec.rb:37:in `block (2 levels) in <top (required)>'

  4) redis should be able to use a namespace with setrange
     Failure/Error: result = @redis.send(command, *args, &block)

     Redis::CommandError:
       ERR unknown command `[]`, with args beginning with: `ns:foo`,
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis/client.rb:126:in 
`call'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:3311:in 
`block in method_missing'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:52:in 
`block in synchronize'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:52:in 
`synchronize'
     # 
/usr/share/rubygems-integration/all/gems/redis-4.1.2/lib/redis.rb:3310:in 
`method_missing'
     # ./lib/redis/namespace.rb:442:in `call_with_namespace'
     # ./lib/redis/namespace.rb:328:in `method_missing'
     # ./spec/redis_spec.rb:132:in `block (2 levels) in <top 
(required)>'

Finished in 1.2 seconds (files took 0.18478 seconds to load)
104 examples, 4 failures

Failed examples:

rspec ./spec/redis_spec.rb:28 # redis proxies `client` to the _client 
and deprecated
rspec ./spec/redis_spec.rb:32 # redis proxies `_client` to the _client
rspec ./spec/redis_spec.rb:36 # redis should be able to use a namespace
rspec ./spec/redis_spec.rb:130 # redis should be able to use a 
namespace with setrange