Remove duplicate version in cache

Author: josh

lib/sprockets/railtie.rb

@@ -92,7 +92,6 @@ def self.build_environment(app)
       # the Sprockets cache when changed.
       env.version = [
         ::Rails.env,
-        ::Rails.env, # TODO: Remove duplicate key
         config.assets.version,
         config.action_controller.relative_url_root,
         (config.action_controller.asset_host unless config.action_controller.asset_host.respond_to?(:call)),

test/test_railtie.rb

@@ -51,7 +51,7 @@ def test_defaults
     assert_kind_of Sprockets::Environment, env
 
     assert_equal ROOT, env.root
-    assert_equal "test-test--#{Sprockets::Rails::VERSION}", env.version
+    assert_equal "test--#{Sprockets::Rails::VERSION}", env.version
     assert env.cache
     assert_equal [], env.paths
     assert_nil env.js_compressor
@@ -137,7 +137,7 @@ def test_version
     app.initialize!
 
     assert env = app.assets
-    assert_equal "test-test-v2-#{Sprockets::Rails::VERSION}", env.version
+    assert_equal "test-v2-#{Sprockets::Rails::VERSION}", env.version
   end
 
   def test_version_fragments_with_string_asset_host
@@ -149,7 +149,7 @@ def test_version_fragments_with_string_asset_host
     app.initialize!
 
     assert env = app.assets
-    assert_equal "test-test-v2-some-path-http://some-cdn.com-#{Sprockets::Rails::VERSION}", env.version
+    assert_equal "test-v2-some-path-http://some-cdn.com-#{Sprockets::Rails::VERSION}", env.version
   end
 
   def test_version_fragments_with_proc_asset_host
@@ -163,7 +163,7 @@ def test_version_fragments_with_proc_asset_host
     app.initialize!
 
     assert env = app.assets
-    assert_equal "test-test-v2-some-path-#{Sprockets::Rails::VERSION}", env.version
+    assert_equal "test-v2-some-path-#{Sprockets::Rails::VERSION}", env.version
   end
 
   def test_configure