Several test cases are unstable

[supercaracal]

I will look into and work on the follows failure later.

Pub / Sub tests on cluster

The Pub/Sub channel tends to remain after another test case. The channel prefix is duplicated between chanel* and channel*. It is just need to change the channel name.

  4) Failure:
TestClusterCommandsOnPubSub#test_publish_psubscribe_punsubscribe_pubsub [/home/runner/work/redis-rb/redis-rb/test/cluster_commands_on_pub_sub_test.rb:90]:
--- expected
+++ actual
@@ -1 +1 @@
-{"chanel1"=>"one", "chanel2"=>"two", "hermes3"=>"three"}
+{"chanel1"=>"one", "chanel2"=>"two", "channel2"=>"two"}

  1) Failure:
TestClusterCommandsOnPubSub#test_publish_psubscribe_punsubscribe_pubsub [/home/runner/work/redis-rb/redis-rb/test/cluster_commands_on_pub_sub_test.rb:90]:
--- expected
+++ actual
@@ -1 +1 @@
-{"chanel1"=>"one", "chanel2"=>"two", "hermes3"=>"three"}
+{"chanel1"=>"one", "chanel2"=>"two", "channel2"=>"two"}

  4) Failure:
TestClusterCommandsOnPubSub#test_publish_psubscribe_punsubscribe_pubsub [/home/runner/work/redis-rb/redis-rb/test/cluster_commands_on_pub_sub_test.rb:90]:
--- expected
+++ actual
@@ -1 +1 @@
-{"chanel1"=>"one", "chanel2"=>"two", "hermes3"=>"three"}
+{"chanel1"=>"one", "chanel2"=>"two", "channel2"=>"two", "hermes3"=>"three"}

  1) Failure:
TestClusterCommandsOnPubSub#test_publish_psubscribe_punsubscribe_pubsub [/home/runner/work/redis-rb/redis-rb/test/cluster_commands_on_pub_sub_test.rb:90]:
--- expected
+++ actual
@@ -1 +1 @@
-{"chanel1"=>"one", "chanel2"=>"two", "hermes3"=>"three"}
+{"chanel1"=>"one", "chanel2"=>"two", "channel2"=>"two"}

 97) Failure:
TestClusterCommandsOnPubSub#test_publish_psubscribe_punsubscribe_pubsub [/home/runner/work/redis-rb/redis-rb/test/cluster_commands_on_pub_sub_test.rb:90]:
--- expected
+++ actual
@@ -1 +1 @@
-{"chanel1"=>"one", "chanel2"=>"two", "hermes3"=>"three"}
+{"chanel1"=>"one", "chanel2"=>"two", "channel2"=>"two", "hermes3"=>"three"}

Sentinel tests

We should wait for Redis Sentinel to be ready.

  2) Error:
SentinelCommandsTest#test_sentinel_command_slaves:
NoMethodError: undefined method `[]' for nil:NilClass
    /home/runner/work/redis-rb/redis-rb/test/sentinel_command_test.rb:30:in `test_sentinel_command_slaves'

  3) Error:
SentinelTest#test_sentinel_slave_role_connection:
Redis::CannotConnectError: No sentinels available.
    /home/runner/work/redis-rb/redis-rb/lib/redis/client.rb:601:in `sentinel_detect'
    /home/runner/work/redis-rb/redis-rb/lib/redis/client.rb:613:in `resolve_slave'
    /home/runner/work/redis-rb/redis-rb/lib/redis/client.rb:570:in `resolve'
    /home/runner/work/redis-rb/redis-rb/lib/redis/client.rb:347:in `establish_connection'

OBJECT command on cluster

It is just need to assert that it must be greater than 0. Type is not the matter.

https://github.com/redis/redis-rb/runs/753602487
Test / Sub (ubuntu-latest, 3.2, 2.3, ruby)

  3) Failure:
TestClusterCommandsOnKeys#test_object [/home/runner/work/redis-rb/redis-rb/test/cluster_commands_on_keys_test.rb:54]:
Expected 0 to be an instance of Integer, not Fixnum.

JRuby timeout

It is just need to increase timeout.

https://github.com/redis/redis-rb/runs/741259913
Test / Sub (ubuntu-latest, 4.0, jruby-9.2.9.0, ruby)

155) Error:
TestDistributedBlockingCommands#test_brpop_timeout:
Redis::TimeoutError: Connection timed out
    /home/runner/work/redis-rb/redis-rb/lib/redis/connection/ruby.rb:72:in `_read_from_socket'
    /home/runner/work/redis-rb/redis-rb/lib/redis/connection/ruby.rb:57:in `gets'
    /home/runner/work/redis-rb/redis-rb/lib/redis/connection/ruby.rb:398:in `read'
    /home/runner/work/redis-rb/redis-rb/lib/redis/client.rb:275:in `block in read'
    /home/runner/work/redis-rb/redis-rb/lib/redis/client.rb:263:in `io'
    /home/runner/work/redis-rb/redis-rb/lib/redis/client.rb:274:in `read'
    /home/runner/work/redis-rb/redis-rb/lib/redis/client.rb:127:in `block in call'
    /home/runner/work/redis-rb/redis-rb/lib/redis/client.rb:243:in `block in process'
    /home/runner/work/redis-rb/redis-rb/lib/redis/client.rb:387:in `ensure_connected'
    /home/runner/work/redis-rb/redis-rb/lib/redis/client.rb:233:in `block in process'