Allow gzip to be disabled from Rails configuration.

Author: tgxworld

lib/sprockets/railtie.rb

@@ -112,6 +112,7 @@ def configure(&block)
     config.assets.compile     = true
     config.assets.digest      = true
     config.assets.cache_limit = 50.megabytes
+    config.assets.gzip        = true
 
     config.assets.configure do |env|
       config.assets.paths.each { |path| env.append_path(path) }
@@ -144,6 +145,10 @@ def configure(&block)
       env.version = config.assets.version
     end
 
+    config.assets.configure do |env|
+      env.gzip = config.assets.gzip
+    end
+
     rake_tasks do |app|
       require 'sprockets/rails/task'
       Sprockets::Rails::Task.new(app)

test/test_railtie.rb

@@ -165,6 +165,23 @@ def test_custom_compressors
     assert_equal compressor, env.css_compressor
   end
 
+  def test_default_gzip_config
+    app.initialize!
+
+    assert env = app.assets
+    assert_equal true, env.gzip?
+  end
+
+  def test_gzip_config
+    app.configure do
+      config.assets.gzip = false
+    end
+    app.initialize!
+
+    assert env = app.assets
+    assert_equal false, env.gzip?
+  end
+
   def test_version
     app.configure do
       config.assets.version = 'v2'