Follow up to #16613

Since we want this flag to be enabled anytime we are running the tests
under JRuby, let's enable this at the Rakefile level so people get the
performance boost on their local checkout.

Moreover, we avoid having to update this particular line anytime the
option changes on the JRuby side.

The only drawback is that we have to define it in every Rakefile but
there's no big deal, this is already the case for other options.

.travis.yml

@@ -12,7 +12,7 @@ rvm:
   - jruby
 env:
   global:
-    - JRUBY_OPTS='-J-XX:+TieredCompilation -J-XX:TieredStopAtLevel=1 -J-Djruby.compile.mode=OFF -J-Djruby.compile.invokedynamic=false -J-Xmx1024M'
+    - JRUBY_OPTS='-J-Xmx1024M'
   matrix:
     - "GEM=railties"
     - "GEM=ap"

actionmailer/Rakefile

@@ -10,6 +10,7 @@ Rake::TestTask.new { |t|
   t.pattern = 'test/**/*_test.rb'
   t.warning = true
   t.verbose = true
+  t.ruby_opts = ["--dev"] if defined?(JRUBY_VERSION)
 }
 
 namespace :test do

actionpack/Rakefile

@@ -16,6 +16,7 @@ Rake::TestTask.new do |t|
 
   t.warning = true
   t.verbose = true
+  t.ruby_opts = ["--dev"] if defined?(JRUBY_VERSION)
 end
 
 namespace :test do

actionview/Rakefile

@@ -21,6 +21,7 @@ namespace :test do
     t.test_files = Dir.glob('test/template/**/*_test.rb').sort
     t.warning = true
     t.verbose = true
+    t.ruby_opts = ["--dev"] if defined?(JRUBY_VERSION)
   end
 
   namespace :integration do
@@ -30,6 +31,7 @@ namespace :test do
       t.test_files = Dir.glob("test/activerecord/*_test.rb")
       t.warning = true
       t.verbose = true
+      t.ruby_opts = ["--dev"] if defined?(JRUBY_VERSION)
     end
 
     desc 'ActionPack Integration Tests'
@@ -38,6 +40,7 @@ namespace :test do
       t.test_files = Dir.glob("test/actionpack/**/*_test.rb")
       t.warning = true
       t.verbose = true
+      t.ruby_opts = ["--dev"] if defined?(JRUBY_VERSION)
     end
   end
 end

activejob/Rakefile

@@ -35,6 +35,7 @@ namespace :test do
       t.libs << 'test'
       t.test_files = FileList['test/cases/**/*_test.rb']
       t.verbose = true
+      t.ruby_opts = ["--dev"] if defined?(JRUBY_VERSION)
     end
 
     namespace :isolated do
@@ -52,6 +53,7 @@ namespace :test do
         t.libs << 'test'
         t.test_files = FileList['test/integration/**/*_test.rb']
         t.verbose = true
+        t.ruby_opts = ["--dev"] if defined?(JRUBY_VERSION)
       end
     end
   end

activemodel/Rakefile

@@ -9,6 +9,7 @@ Rake::TestTask.new do |t|
   t.test_files = Dir.glob("#{dir}/test/cases/**/*_test.rb").sort
   t.warning = true
   t.verbose = true
+  t.ruby_opts = ["--dev"] if defined?(JRUBY_VERSION)
 end
 
 namespace :test do

activerecord/Rakefile

@@ -55,6 +55,7 @@ end
 
       t.warning = true
       t.verbose = true
+      t.ruby_opts = ["--dev"] if defined?(JRUBY_VERSION)
     }
 
     namespace :isolated do

activesupport/Rakefile

@@ -7,9 +7,9 @@ Rake::TestTask.new do |t|
   t.pattern = 'test/**/*_test.rb'
   t.warning = true
   t.verbose = true
+  t.ruby_opts = ["--dev"] if defined?(JRUBY_VERSION)
 end
 
-
 namespace :test do
   task :isolated do
     Dir.glob("test/**/*_test.rb").all? do |file|

railties/Rakefile

@@ -29,6 +29,7 @@ Rake::TestTask.new('test:regular') do |t|
   t.pattern = 'test/**/*_test.rb'
   t.warning = true
   t.verbose = true
+  t.ruby_opts = ["--dev"] if defined?(JRUBY_VERSION)
 end
 
 # Generate GEM ----------------------------------------------------------------------------