Run specs in verbose mode on Ruby 3+

Fix verbose warning in spec.

Remove spec_*_w rake tasks

Limit use of warning gem to mysql/mysql2 adapters, as those
drivers still have taint warnings.

Rakefile

@@ -70,7 +70,7 @@ run_spec = proc do |file|
   lib_dir = File.join(File.dirname(File.expand_path(__FILE__)), 'lib')
   rubylib = ENV['RUBYLIB']
   ENV['RUBYLIB'] ? (ENV['RUBYLIB'] += ":#{lib_dir}") : (ENV['RUBYLIB'] = lib_dir)
-  sh "#{FileUtils::RUBY} #{file}"
+  sh "#{FileUtils::RUBY} #{"-w" if RUBY_VERSION >= '3'} #{file}"
   ENV['RUBYLIB'] = rubylib
 end
 
@@ -80,16 +80,6 @@ spec_task = proc do |description, name, file, coverage, visibility|
     run_spec.call(file)
   end
 
-  desc "#{description} with warnings, some warnings filtered"
-  task :"#{name}_w" do
-    rubyopt = ENV['RUBYOPT']
-    ENV['RUBYOPT'] = "#{rubyopt} -w"
-    ENV['WARNING'] = '1'
-    run_spec.call(file)
-    ENV.delete('WARNING')
-    ENV['RUBYOPT'] = rubyopt
-  end
-
   if coverage
     desc "#{description} with coverage"
     task :"#{name}_cov" do

spec/adapters/spec_helper.rb

@@ -1,5 +1,4 @@
 require 'logger'
-require_relative "../sequel_warning"
 
 if ENV['COVERAGE']
   require_relative "../sequel_coverage"
@@ -33,6 +32,7 @@
   DB = Sequel.connect(ENV[env_var])
 end
 
+require_relative "../sequel_warning"
 require_relative "../visibility_checking" if ENV['CHECK_METHOD_VISIBILITY']
 
 IDENTIFIER_MANGLING = !!ENV['SEQUEL_IDENTIFIER_MANGLING'] unless defined?(IDENTIFIER_MANGLING)

spec/core/spec_helper.rb

@@ -1,5 +1,3 @@
-require_relative "../sequel_warning"
-
 if ENV['COVERAGE']
   require_relative "../sequel_coverage"
   SimpleCov.sequel_coverage(:filter=>%r{lib/sequel/(\w+\.rb|(dataset|database|model|connection_pool)/\w+\.rb|adapters/mock\.rb)\z})

spec/core_extensions_spec.rb

@@ -1,5 +1,3 @@
-require_relative "sequel_warning"
-
 if ENV['COVERAGE']
   require_relative "sequel_coverage"
   SimpleCov.sequel_coverage(:filter=>%r{lib/sequel/extensions/core_extensions\.rb\z})

spec/extensions/spec_helper.rb

@@ -1,5 +1,3 @@
-require_relative "../sequel_warning"
-
 if ENV['COVERAGE']
   require_relative "../sequel_coverage"
   SimpleCov.sequel_coverage(:filter=>%r{lib/sequel/(extensions|plugins)/\w+\.rb\z})

spec/integration/dataset_test.rb

@@ -137,7 +137,7 @@
   end
 
   it "should support iterating over large numbers of records with paged_each" do
-    v = (2..100).map{|i| wait{@ds.insert(:number=>i*10)}}
+    (2..100).map{|i| wait{@ds.insert(:number=>i*10)}}
 
     [:offset, :filter].each do |strategy|
       rows = []

spec/integration/spec_helper.rb

@@ -1,5 +1,4 @@
 require 'logger'
-require_relative "../sequel_warning"
 
 if ENV['COVERAGE']
   require_relative "../sequel_coverage"
@@ -31,6 +30,7 @@
 require_relative '../guards_helper'
 
 DB = Sequel.connect(ENV['SEQUEL_INTEGRATION_URL']) unless defined?(DB)
+require_relative "../sequel_warning"
 
 IDENTIFIER_MANGLING = !!ENV['SEQUEL_IDENTIFIER_MANGLING'] unless defined?(IDENTIFIER_MANGLING)
 DB.extension(:identifier_mangling) if IDENTIFIER_MANGLING

spec/model/spec_helper.rb

@@ -1,5 +1,3 @@
-require_relative "../sequel_warning"
-
 $:.unshift(File.join(File.dirname(File.expand_path(__FILE__)), "../../lib/"))
 require_relative "../../lib/sequel"
 

spec/sequel_warning.rb

@@ -1,6 +1,9 @@
-if ENV['WARNING']
-  require 'warning'
-  Warning.ignore(:missing_ivar, File.dirname(File.dirname(__FILE__)))
-  Warning.ignore(/gems\/(tzinfo|activesupport)-\d/)
-  Warning.dedup if Warning.respond_to?(:dedup)
+if RUBY_VERSION >= '3' && [:mysql, :mysql2].include?(DB.adapter_scheme)
+  begin
+    require 'warning'
+  rescue LoadError
+  else
+    Warning.ignore(:taint)
+    Warning.dedup if Warning.respond_to?(:dedup)
+  end
 end