Add rake dev:cache task to enable dev mode caching.

Taken from @Sonopa's commits on PR #19091.

Add support for dev caching via "rails s" flags.

Implement suggestions from @kaspth.

Remove temporary cache file if server does not have flags.

Break at 80 characters in railties/CHANGELOG.md

Remove ability to disable cache based on server options.

Add more comprehensive options: --dev-caching / --no-dev-caching

1 files changed, 16 insertions, 0 deletions

diff --git a/railties/test/commands/server_test.rb b/railties/test/commands/server_test.rb
index ba688f1e9e..7a063aeddf 100644
--- a/railties/test/commands/server_test.rb
+++ b/railties/test/commands/server_test.rb
@@ -44,6 +44,22 @@ class Rails::ServerTest < ActiveSupport::TestCase
     end
   end
 
+  def test_caching_without_option
+    args = []
+    options = Rails::Server::Options.new.parse!(args)
+    assert_equal nil, options[:caching]
+  end
+
+  def test_caching_with_option
+    args = ["--dev-caching"]
+    options = Rails::Server::Options.new.parse!(args)
+    assert_equal true, options[:caching]
+
+    args = ["--no-dev-caching"]
+    options = Rails::Server::Options.new.parse!(args)
+    assert_equal false, options[:caching]
+  end
+
   def test_log_stdout
     with_rack_env nil do
       with_rails_env nil do