chore: freeze some objects (#204)

Author: supercaracal

lib/redis_client/cluster/command.rb

@@ -50,12 +50,12 @@ def parse_command_reply(rows)
               write?: row[2].include?('write'),
               readonly?: row[2].include?('readonly')
             )
-          end || EMPTY_HASH
+          end.freeze || EMPTY_HASH
         end
       end
 
       def initialize(commands)
-        @commands = commands || {}
+        @commands = commands || EMPTY_HASH
       end
 
       def extract_first_key(command)

lib/redis_client/cluster/node.rb

@@ -127,7 +127,7 @@ def load_info(options, **kwargs) # rubocop:disable Metrics/AbcSize, Metrics/Cycl
             end
           end
 
-          grouped.max_by { |_, v| v.size }[1].first
+          grouped.max_by { |_, v| v.size }[1].first.freeze
         end
 
         private

test/cluster_controller.rb

@@ -501,6 +501,6 @@ def replica_client?(client)
   def print_debug(msg)
     return unless @debug == '1'
 
-    p msg
+    p msg # rubocop:disable Lint/Debugger
   end
 end

test/redis_client/test_cluster.rb

@@ -277,7 +277,7 @@ def test_dedicated_commands # rubocop:disable Metrics/CyclomaticComplexity, Metr
           { command: %w[MULTI], error: ::RedisClient::Cluster::AmbiguousNodeError },
           { command: %w[FLUSHDB], want: 'OK' }
         ].each do |c|
-          next if c.key?(:supported_redis_version) && TEST_REDIS_MAJOR_VERSION < c[:supported_redis_version]
+          next if c.key?(:supported_redis_version) && c[:supported_redis_version] > TEST_REDIS_MAJOR_VERSION
 
           msg = "Case: #{c[:command].join(' ')}"
           got = -> { @client.call_v(c[:command], &c[:blk]) }

test/test_against_cluster_scale.rb

@@ -52,7 +52,8 @@ def test_02_scale_in
     rescue ::RedisClient::CommandError => e
       raise unless e.message.start_with?('CLUSTERDOWN Hash slot not served')
 
-      p "key#{i}" # FIXME: Why does the error occur?
+      # FIXME: Why does the error occur?
+      p "key#{i}" # rubocop:disable Lint/Debugger
     end
 
     want = TEST_NODE_URIS.size