From afb83c11081b7b6b9fd045665233afcc21c52e32 Mon Sep 17 00:00:00 2001
From: Dan Neumann <danrodneu@gmail.com>
Date: Tue, 12 Feb 2013 22:45:10 -0600
Subject: [PATCH] cleaned up discourse_plugin

---
 .../discourse_plugin/lib/discourse_event.rb   | 34 ++++-----
 .../lib/discourse_plugin/discourse_plugin.rb  | 31 ++++----
 .../spec/discourse_event_spec.rb              | 74 ++++++++++++++-----
 .../spec/discourse_plugin_spec.rb             | 12 ++-
 4 files changed, 97 insertions(+), 54 deletions(-)

diff --git a/vendor/gems/discourse_plugin/lib/discourse_event.rb b/vendor/gems/discourse_plugin/lib/discourse_event.rb
index 12ecde64b..c0ec064d3 100644
--- a/vendor/gems/discourse_plugin/lib/discourse_event.rb
+++ b/vendor/gems/discourse_plugin/lib/discourse_event.rb
@@ -2,27 +2,23 @@
 # So we can execute code when things happen.
 module DiscourseEvent
 
-  class << self
+  # Defaults to a hash where default values are empty sets.
+  def self.events
+    @events ||= Hash.new { |hash, key| hash[key] = Set.new }
+  end
 
-    def trigger(event_name, *params)
-
-      return unless @events      
-      return unless event_list = @events[event_name]
-
-      event_list.each do |ev|
-        ev.call(*params)
-      end
-    end
-
-    def on(event_name, &block)
-      @events ||= {}
-      @events[event_name] ||= Set.new
-      @events[event_name] << block
-    end
-
-    def clear
-      @events = {}
+  def self.trigger(event_name, *params)
+    events[event_name].each do |event|
+      event.call(*params)
     end
   end
 
+  def self.on(event_name, &block)
+    events[event_name] << block
+  end
+
+  def self.clear
+    @events = nil
+  end
+
 end
diff --git a/vendor/gems/discourse_plugin/lib/discourse_plugin/discourse_plugin.rb b/vendor/gems/discourse_plugin/lib/discourse_plugin/discourse_plugin.rb
index 67d4b01ac..b39b676c0 100644
--- a/vendor/gems/discourse_plugin/lib/discourse_plugin/discourse_plugin.rb
+++ b/vendor/gems/discourse_plugin/lib/discourse_plugin/discourse_plugin.rb
@@ -6,27 +6,30 @@ class DiscoursePlugin
   attr_reader :registry
 
   def initialize(registry)
-    @registry = registry  
+    @registry = registry
   end
 
-  def setup  
-    # Initialize the plugin here 
+  def setup
+    # Initialize the plugin here
   end
 
-  # Find the modules in our class with the name mixin, then include them in the appropriate places
-  # automagically.
+  # Loads and mixes in the plugin's mixins into the host app's classes.
+  # A mixin named "UserMixin" will be included into the "User" class.
   def self.include_mixins
-    modules = constants.collect {|const_name| const_get(const_name)}.select {|const| const.class == Module}
-    unless modules.empty?
-      modules.each do |m|
-        original_class = m.to_s.sub("#{self.name}::", '').sub("Mixin", "")
-        dependency_file_name = original_class.underscore
-        require_dependency(dependency_file_name)  
-        original_class.constantize.send(:include, m)
-      end
+    mixins.each do |mixin|
+      original_class = mixin.to_s.demodulize.sub("Mixin", "")
+      dependency_file_name = original_class.underscore
+      require_dependency(dependency_file_name)
+      original_class.constantize.send(:include, mixin)
     end
   end
 
+  # Find the modules defined in the plugin with "Mixin" in their name.
+  def self.mixins
+    constants.map { |const_name| const_get(const_name) }
+             .select { |const| const.class == Module && const.name["Mixin"] }
+  end
+
   def register_js(file, opts={})
     @registry.register_js(file, opts)
   end
@@ -40,7 +43,7 @@ class DiscoursePlugin
   end
 
   def listen_for(event_name)
-    return unless self.respond_to?(event_name)    
+    return unless self.respond_to?(event_name)
     DiscourseEvent.on(event_name, &self.method(event_name))
   end
 
diff --git a/vendor/gems/discourse_plugin/spec/discourse_event_spec.rb b/vendor/gems/discourse_plugin/spec/discourse_event_spec.rb
index 0aa334eda..94a2bb481 100644
--- a/vendor/gems/discourse_plugin/spec/discourse_event_spec.rb
+++ b/vendor/gems/discourse_plugin/spec/discourse_event_spec.rb
@@ -4,13 +4,35 @@ require 'ostruct'
 
 describe DiscourseEvent do
 
-  it "doesn't raise an error if we call an event that doesn't exist" do
-    DiscourseEvent.trigger(:missing_event)
+  describe "#events" do
+    it "defaults to {}" do
+      DiscourseEvent.instance_variable_set(:@events, nil)
+      DiscourseEvent.events.should == {}
+    end
+
+    describe "key value" do
+      it "defaults to an empty set" do
+        DiscourseEvent.events["event42"].should == Set.new
+      end
+    end
   end
 
-  context 'with an event to call' do
+  describe ".clear" do
+    it "clears out events" do
+      DiscourseEvent.events["event42"] << "test event"
+      DiscourseEvent.clear
+      DiscourseEvent.events.should be_empty
+    end
+  end
 
-    let(:harvey) { OpenStruct.new(name: 'Harvey Dent', job: 'District Attorney') }
+  context 'when calling events' do
+
+    let(:harvey) {
+      OpenStruct.new(
+        name: 'Harvey Dent',
+        job: 'District Attorney'
+      )
+    }
 
     before do
       DiscourseEvent.on(:acid_face) do |user|
@@ -18,30 +40,42 @@ describe DiscourseEvent do
       end
     end
 
-    it "doesn't raise an error" do
-      DiscourseEvent.trigger(:acid_face, harvey)      
+    context 'when event does not exist' do
+
+      it "does not raise an error" do
+        DiscourseEvent.trigger(:missing_event)
+      end
+
     end
 
-    it "chnages the name" do
-      DiscourseEvent.trigger(:acid_face, harvey)      
-      harvey.name.should == 'Two Face'
-    end
+    context 'when single event exists' do
 
-    context 'multiple events' do
-      before do
-        DiscourseEvent.on(:acid_face) do |user|
-          user.job =  'Supervillian'
-        end        
+      it "doesn't raise an error" do
         DiscourseEvent.trigger(:acid_face, harvey)
       end
 
-      it 'triggerred the email event' do
-        harvey.job.should == 'Supervillian'
-      end
-
-      it 'triggerred the username change' do
+      it "changes the name" do
+        DiscourseEvent.trigger(:acid_face, harvey)
         harvey.name.should == 'Two Face'
       end
+
+    end
+
+    context 'when multiple events exist' do
+
+      before do
+        DiscourseEvent.on(:acid_face) do |user|
+          user.job =  'Supervillian'
+        end
+
+        DiscourseEvent.trigger(:acid_face, harvey)
+      end
+
+      it 'triggers both events' do
+        harvey.job.should == 'Supervillian'
+        harvey.name.should == 'Two Face'
+      end
+
     end
 
   end
diff --git a/vendor/gems/discourse_plugin/spec/discourse_plugin_spec.rb b/vendor/gems/discourse_plugin/spec/discourse_plugin_spec.rb
index 19b0e5d54..2b22fb3fc 100644
--- a/vendor/gems/discourse_plugin/spec/discourse_plugin_spec.rb
+++ b/vendor/gems/discourse_plugin/spec/discourse_plugin_spec.rb
@@ -5,11 +5,22 @@ require 'ostruct'
 describe DiscoursePlugin do
 
   class TestPlugin < DiscoursePlugin
+    module SomeModule
+    end
+
+    module TestMixin
+    end
   end
 
   let(:registry) { mock }
   let(:plugin) { TestPlugin.new(registry) }
 
+  describe ".mixins" do
+    it "finds its mixins" do
+      TestPlugin.mixins.should == [TestPlugin::TestMixin]
+    end
+  end
+
   it "delegates adding js to the registry" do
     registry.expects(:register_js).with('test.js', any_parameters)
     plugin.register_js('test.js')
@@ -38,5 +49,4 @@ describe DiscoursePlugin do
 
   end
 
-
 end