Allow plugins to ship custom styles only for mobile

- adds another :mobile-flag to register_assets
- adds test for plugin registering of assets
- load plugins when on desktop and plugins_mobile when on mobile

spec/components/plugin/instance_spec.rb

@@ -5,7 +5,10 @@ describe Plugin::Instance do
 
   after do
     DiscoursePluginRegistry.javascripts.clear
+    DiscoursePluginRegistry.admin_javascripts.clear
+    DiscoursePluginRegistry.server_side_javascripts.clear
     DiscoursePluginRegistry.stylesheets.clear
+    DiscoursePluginRegistry.mobile_stylesheets.clear
   end
 
   context "find_all" do
@@ -24,6 +27,37 @@ describe Plugin::Instance do
     end
   end
 
+  context "register asset" do
+    it "does register css properly" do
+      plugin = Plugin::Instance.new nil, "/tmp/test.rb"
+      plugin.register_asset("test.css")
+      plugin.assets.count.should == 1
+      plugin.register_asset("test2.css")
+      plugin.assets.count.should == 2
+
+    end
+    it "does register mobile css properly" do
+      plugin = Plugin::Instance.new nil, "/tmp/test.rb"
+      plugin.register_asset("test.css", :mobile)
+      plugin.assets.count.should == 0
+      plugin.mobile_styles.count.should == 1
+    end
+    it "does register admin javascript properly" do
+      plugin = Plugin::Instance.new nil, "/tmp/test.rb"
+      plugin.register_asset("my_admin.js", :admin)
+      plugin.assets.count.should == 0
+      plugin.admin_javascripts.count.should == 1
+    end
+    it "does register server side javascript properly" do
+      plugin = Plugin::Instance.new nil, "/tmp/test.rb"
+      plugin.register_asset("my_admin.js", :server_side)
+      # server side is both in assets and in server_side
+      plugin.assets.count.should == 1
+      plugin.server_side_javascripts.count.should == 1
+    end
+  end
+
+
   context "activate!" do
     it "can activate plugins correctly" do
       plugin = Plugin::Instance.new
@@ -47,6 +81,31 @@ describe Plugin::Instance do
       # ensure it cleans up all crap in autogenerated directory
       File.exists?(junk_file).should be_false
     end
+
+    it "finds all the custom assets" do
+      plugin = Plugin::Instance.new
+      plugin.path = "#{Rails.root}/spec/fixtures/plugins/my_plugin/plugin.rb"
+      # two styles
+      plugin.register_asset("test.css")
+      plugin.register_asset("test2.scss")
+      # one javascript
+      plugin.register_asset("code.js")
+      # one mobile
+      plugin.register_asset("test.css", :mobile)
+      # a server side
+      plugin.register_asset("server_side.js", :server_side)
+      # and two admin
+      plugin.register_asset("my_admin.js", :admin)
+      plugin.register_asset("my_admin2.js", :admin)
+
+      plugin.activate!
+
+      DiscoursePluginRegistry.javascripts.count.should == 3
+      DiscoursePluginRegistry.admin_javascripts.count.should == 2
+      DiscoursePluginRegistry.server_side_javascripts.count.should == 1
+      DiscoursePluginRegistry.stylesheets.count.should == 2
+      DiscoursePluginRegistry.mobile_stylesheets.count.should == 1
+    end
   end
 
 end