Set 2.6 as minimum ruby version for Sinatra 3 (#1699)

* Run tests for Ruby versions >= 2.6

* Remove not needed checks for methods defined

* Set required_ruby_version to >= 2.6

* Update READMEs with new Ruby versions

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
       matrix:
         # Due to https://github.com/actions/runner/issues/849, we have to use quotes for '3.0'
         # TODO: Add jruby if something like allow_failures will be implemented on Actions.
-        ruby: [2.3, 2.4, 2.5, 2.6, 2.7, '3.0']
+        ruby: [2.6, 2.7, '3.0']
     steps:
     - uses: actions/checkout@v2
     - uses: ruby/setup-ruby@v1

README.de.md

@@ -3082,9 +3082,9 @@ thin --threaded start
 Die folgenden Versionen werden offiziell unterstützt:
 
 <dl>
-  <dt>Ruby 2.3</dt>
+  <dt>Ruby 2.6</dt>
   <dd>
-    2.3 wird vollständig unterstützt. Es gibt derzeit keine Pläne die
+    2.6 wird vollständig unterstützt. Es gibt derzeit keine Pläne die
     offizielle Unterstützung zu beenden
   </dd>
 
@@ -3103,7 +3103,7 @@ Die folgenden Versionen werden offiziell unterstützt:
   </dd>
 </dl>
 
-Versionen vor Ruby 2.2.2 werden ab Sinatra 2.0 nicht länger unterstützt.
+Versionen vor Ruby 2.6 werden ab Sinatra 3.0 nicht länger unterstützt.
 
 Nachfolgende Ruby-Versionen werden regelmäßig auf Unterstützung geprüft.
 

README.es.md

@@ -3075,9 +3075,9 @@ rainbows -c rainbows.conf
 Las siguientes versiones de Ruby son soportadas oficialmente:
 
 <dl>
-  <dt>Ruby 2.3</dt>
+  <dt>Ruby 2.6</dt>
     <dd>
-      2.3 Es totalmente compatible y recomendado. Actualmente no hay planes
+      2.6 Es totalmente compatible y recomendado. Actualmente no hay planes
       soltar el apoyo oficial para ello.
     </dd>
 
@@ -3095,7 +3095,7 @@ Las siguientes versiones de Ruby son soportadas oficialmente:
   </dd>
 </dl>
 
-Las versiones de Ruby anteriores a 2.2.2 ya no son compatibles con Sinatra 2.0 .
+Las versiones de Ruby anteriores a 2.6 ya no son compatibles con Sinatra 3.0 .
 
 Siempre le prestamos atención a las nuevas versiones de Ruby.
 

README.md

@@ -3047,9 +3047,9 @@ rainbows -c rainbows.conf
 
 The following Ruby versions are officially supported:
 <dl>
-  <dt>Ruby 2.3</dt>
+  <dt>Ruby 2.6</dt>
   <dd>
-    2.3 is fully supported and recommended. There are currently no plans to
+    2.6 is fully supported and recommended. There are currently no plans to
     drop official support for it.
   </dd>
 
@@ -3067,7 +3067,7 @@ The following Ruby versions are officially supported:
   </dd>
 </dl>
 
-Versions of Ruby before 2.3 are no longer supported as of Sinatra 2.1.0.
+Versions of Ruby before 2.6 are no longer supported as of Sinatra 3.0.0.
 
 We also keep an eye on upcoming Ruby versions.
 

README.ru.md

@@ -3051,9 +3051,9 @@ thin --threaded start
 
 Следующие версии Ruby официально поддерживаются:
 <dl>
-  <dt>Ruby 2.3</dt>
+  <dt>Ruby 2.6</dt>
   <dd>
-    Версия 2.3 полностью поддерживается и рекомендуется. В настоящее время нет
+    Версия 2.6 полностью поддерживается и рекомендуется. В настоящее время нет
   планов отказаться от официальной поддержки.
   </dd>
 
@@ -3071,7 +3071,7 @@ thin --threaded start
   </dd>
 </dl>
 
-Версии Ruby ниже 2.2.2 более не поддерживаются в Sinatra 2.0.
+Версии Ruby ниже 2.6 более не поддерживаются в Sinatra 3.0.
 
 Мы также следим за предстоящими к выходу версиями Ruby.
 

lib/sinatra/indifferent_hash.rb

@@ -1,11 +1,4 @@
 # frozen_string_literal: true
-$stderr.puts <<EOF if !Hash.method_defined?(:slice) && !$LOAD_PATH.grep(%r{gems/activesupport}).empty? && ENV['SINATRA_ACTIVESUPPORT_WARNING'] != 'false'
-WARNING: If you plan to load any of ActiveSupport's core extensions to Hash, be
-sure to do so *before* loading Sinatra::Application or Sinatra::Base. If not,
-you may disregard this warning.
-
-Set SINATRA_ACTIVESUPPORT_WARNING=false in the environment to hide this warning.
-EOF
 
 module Sinatra
   # A poor man's ActiveSupport::HashWithIndifferentAccess, with all the Rails-y
@@ -112,19 +105,19 @@ def delete(key)
 
     def dig(key, *other_keys)
       super(convert_key(key), *other_keys)
-    end if method_defined?(:dig) # Added in Ruby 2.3
+    end
 
     def fetch_values(*keys)
       keys.map!(&method(:convert_key))
 
       super(*keys)
-    end if method_defined?(:fetch_values) # Added in Ruby 2.3
+    end
 
     def slice(*keys)
       keys.map!(&method(:convert_key))
 
       self.class[super(*keys)]
-    end if method_defined?(:slice) # Added in Ruby 2.5
+    end
 
     def values_at(*keys)
       keys.map!(&method(:convert_key))
@@ -158,26 +151,22 @@ def replace(other_hash)
       super(other_hash.is_a?(self.class) ? other_hash : self.class[other_hash])
     end
 
-    if method_defined?(:transform_values!) # Added in Ruby 2.4
-      def transform_values(&block)
-        dup.transform_values!(&block)
-      end
+    def transform_values(&block)
+      dup.transform_values!(&block)
+    end
 
-      def transform_values!
-        super
-        super(&method(:convert_value))
-      end
+    def transform_values!
+      super
+      super(&method(:convert_value))
     end
 
-    if method_defined?(:transform_keys!) # Added in Ruby 2.5
-      def transform_keys(&block)
-        dup.transform_keys!(&block)
-      end
+    def transform_keys(&block)
+      dup.transform_keys!(&block)
+    end
 
-      def transform_keys!
-        super
-        super(&method(:convert_key))
-      end
+    def transform_keys!
+      super
+      super(&method(:convert_key))
     end
 
     def select(*args, &block)

sinatra-contrib/sinatra-contrib.gemspec

@@ -34,7 +34,7 @@ RubyGems 2.0 or newer is required to protect against public gem pushes. You can
 EOF
   end
 
-  s.required_ruby_version = '>= 2.3.0'
+  s.required_ruby_version = '>= 2.6.0'
 
   s.add_dependency "sinatra", version
   s.add_dependency "mustermann", "~> 1.0"

sinatra.gemspec

@@ -40,7 +40,7 @@ RubyGems 2.0 or newer is required to protect against public gem pushes. You can
 EOF
   end
 
-  s.required_ruby_version = '>= 2.3.0'
+  s.required_ruby_version = '>= 2.6.0'
 
   s.add_dependency 'rack', '~> 2.2'
   s.add_dependency 'tilt', '~> 2.0'

test/indifferent_hash_test.rb

@@ -4,10 +4,6 @@
 #
 require 'minitest/autorun' unless defined?(Minitest)
 
-# Suppress the ActiveSupport warning when this test is executed independently,
-# outside of the full suite, on older Rubies.
-ENV['SINATRA_ACTIVESUPPORT_WARNING'] = 'false'
-
 require_relative '../lib/sinatra/indifferent_hash'
 
 class TestIndifferentHashBasics < Minitest::Test
@@ -69,10 +65,6 @@ def test_merge!
 end
 
 class TestIndifferentHash < Minitest::Test
-  def skip_if_lacking(meth)
-    skip "Hash##{meth} not supported on this Ruby" unless Hash.method_defined?(meth)
-  end
-
   def setup
     @hash = Sinatra::IndifferentHash[:a=>:a, ?b=>:b, 3=>3,
       :simple_nested=>{ :a=>:a, ?b=>:b },
@@ -158,8 +150,6 @@ def test_delete
   end
 
   def test_dig
-    skip_if_lacking :dig
-
     assert_equal :a, @hash.dig(:a)
     assert_equal :b, @hash.dig(?b)
     assert_nil @hash.dig(:d)
@@ -174,8 +164,6 @@ def test_dig
   end
 
   def test_slice
-    skip_if_lacking :slice
-
     assert_equal Sinatra::IndifferentHash[a: :a], @hash.slice(:a)
     assert_equal Sinatra::IndifferentHash[b: :b], @hash.slice(?b)
     assert_equal Sinatra::IndifferentHash[3 => 3], @hash.slice(3)
@@ -186,8 +174,6 @@ def test_slice
   end
 
   def test_fetch_values
-    skip_if_lacking :fetch_values
-
     assert_raises(KeyError) { @hash.fetch_values(3, :d) }
     assert_equal [:a, :b, 3, ?D], @hash.fetch_values(:a, ?b, 3, :d) { |k| k.upcase }
   end
@@ -225,16 +211,12 @@ def test_replace
   end
 
   def test_transform_values!
-    skip_if_lacking :transform_values!
-
     @hash.transform_values! { |v| v.is_a?(Hash) ? Hash[v.to_a] : v }
 
     assert_instance_of Sinatra::IndifferentHash, @hash[:simple_nested]
   end
 
   def test_transform_values
-    skip_if_lacking :transform_values
-
     hash2 = @hash.transform_values { |v| v.respond_to?(:upcase) ? v.upcase : v }
 
     refute_equal @hash, hash2
@@ -243,17 +225,13 @@ def test_transform_values
   end
 
   def test_transform_keys!
-    skip_if_lacking :transform_keys!
-
     @hash.transform_keys! { |k| k.respond_to?(:to_sym) ? k.to_sym : k }
 
     assert_equal :a, @hash[:a]
     assert_equal :a, @hash[?a]
   end
 
   def test_transform_keys
-    skip_if_lacking :transform_keys
-
     hash2 = @hash.transform_keys { |k| k.respond_to?(:upcase) ? k.upcase : k }
 
     refute_equal @hash, hash2
@@ -300,8 +278,6 @@ def test_reject!
   end
 
   def test_compact
-    skip_if_lacking :compact
-
     hash_with_nil_values = @hash.merge({?z => nil})
     compacted_hash = hash_with_nil_values.compact
     assert_equal @hash, compacted_hash