Test against ruby 2.7 and fix warnings

.travis.yml

@@ -15,6 +15,7 @@ rvm:
   - 2.4
   - 2.5
   - 2.6
+  - 2.7
   - ruby-head
   - jruby-18mode
   - jruby-19mode

lib/redis/namespace.rb

@@ -68,7 +68,8 @@ class Namespace
       "decrby"           => [ :first ],
       "del"              => [ :all   ],
       "dump"             => [ :first ],
-      "exists"           => [ :first ],
+      "exists"           => [ :all ],
+      "exists?"          => [ :all ],
       "expire"           => [ :first ],
       "expireat"         => [ :first ],
       "eval"             => [ :eval_style ],
@@ -324,6 +325,7 @@ def exec
     def eval(*args)
       call_with_namespace(:eval, *args)
     end
+    ruby2_keywords(:eval) if respond_to?(:ruby2_keywords, true)
 
     ADMINISTRATIVE_COMMANDS.keys.each do |command|
       define_method(command) do |*args, &block|
@@ -339,6 +341,7 @@ def eval(*args)
         end
         call_with_namespace(command, *args, &block)
       end
+      ruby2_keywords(command) if respond_to?(:ruby2_keywords, true)
     end
 
     COMMANDS.keys.each do |command|
@@ -348,6 +351,7 @@ def eval(*args)
       define_method(command) do |*args, &block|
         call_with_namespace(command, *args, &block)
       end
+      ruby2_keywords(command) if respond_to?(:ruby2_keywords, true)
     end
 
     def method_missing(command, *args, &block)
@@ -370,6 +374,7 @@ def method_missing(command, *args, &block)
         super
       end
     end
+    ruby2_keywords(:method_missing) if respond_to?(:ruby2_keywords, true)
 
     def inspect
       "<#{self.class.name} v#{VERSION} with client v#{Redis::VERSION} "\
@@ -405,6 +410,7 @@ def call_with_namespace(command, *args, &block)
       case before
       when :first
         args[0] = add_namespace(args[0]) if args[0]
+        args[-1] = ruby2_keywords_hash(args[-1]) if args[-1].is_a?(Hash)
       when :all
         args = add_namespace(args)
       when :exclude_first
@@ -417,7 +423,7 @@ def call_with_namespace(command, *args, &block)
         args.push(last) if last
       when :exclude_options
         if args.last.is_a?(Hash)
-          last = args.pop
+          last = ruby2_keywords_hash(args.pop)
           args = add_namespace(args)
           args.push(last)
         else
@@ -437,6 +443,7 @@ def call_with_namespace(command, *args, &block)
           args[1][:get].each_index do |i|
             args[1][:get][i] = add_namespace(args[1][:get][i]) unless args[1][:get][i] == "#"
           end
+          args[1] = ruby2_keywords_hash(args[1])
         end
       when :eval_style
         # redis.eval() and evalsha() can either take the form:
@@ -457,7 +464,7 @@ def call_with_namespace(command, *args, &block)
       when :scan_style
         options = (args.last.kind_of?(Hash) ? args.pop : {})
         options[:match] = add_namespace(options.fetch(:match, '*'))
-        args << options
+        args << ruby2_keywords_hash(options)
 
         if block
           original_block = block
@@ -483,9 +490,20 @@ def call_with_namespace(command, *args, &block)
 
       result
     end
+    ruby2_keywords(:call_with_namespace) if respond_to?(:ruby2_keywords, true)
 
   private
 
+    if Hash.respond_to?(:ruby2_keywords_hash)
+      def ruby2_keywords_hash(kwargs)
+        Hash.ruby2_keywords_hash(kwargs)
+      end
+    else
+      def ruby2_keywords_hash(kwargs)
+        kwargs
+      end
+    end
+
     # Avoid modifying the caller's (pass-by-reference) arguments.
     def clone_args(arg)
       if arg.is_a?(Array)

redis-namespace.gemspec

@@ -28,7 +28,7 @@ Gem::Specification.new do |s|
 
   s.add_dependency    "redis", ">= 3.0.4"
 
-  s.add_development_dependency "rake", "~> 10.1"
+  s.add_development_dependency "rake"
   s.add_development_dependency "rspec", "~> 3.7"
   s.add_development_dependency "rspec-its"
 

spec/redis_spec.rb

@@ -140,7 +140,7 @@
 
   it 'should be able to use a namespace with setbit' do
     @namespaced.setbit('virgin_key', 1, 1)
-    expect(@namespaced.exists('virgin_key')).to be true
+    expect(@namespaced.exists?('virgin_key')).to be true
     expect(@namespaced.get('virgin_key')).to eq(@namespaced.getrange('virgin_key',0,-1))
   end
 
@@ -239,7 +239,7 @@
     @namespaced.zadd('sort2', 2, 2)
     @namespaced.zadd('sort2', 3, 3)
     @namespaced.zadd('sort2', 4, 4)
-    @namespaced.zunionstore('union', ['sort1', 'sort2'], :weights => [2, 1])
+    @namespaced.zunionstore('union', ['sort1', 'sort2'], weights: [2, 1])
     expect(@namespaced.zrevrange('union', 0, -1)).to eq(%w( 2 4 3 1 ))
   end
 

spec/spec_helper.rb

@@ -12,6 +12,10 @@
 $:.unshift File.join(File.dirname(__FILE__), '..', 'lib')
 require 'redis/namespace'
 
+if Redis.respond_to?(:exists_returns_integer=)
+  Redis.exists_returns_integer = true
+end
+
 module Helper
   def capture_stderr(io = nil)
     require 'stringio'