Hook - 1) Send args to hooks from Guard.supervised_task

2) Pass args from hooks to callbacks
3) Suppress UI message from hooks unless in 'development'

lib/guard.rb

@@ -60,9 +60,9 @@ module Guard
     # Let a guard execute its task but
     # fire it if his work leads to a system failure
     def supervised_task(guard, task_to_supervise, *args)
-      guard.hook "#{task_to_supervise}_begin"
+      guard.hook("#{task_to_supervise}_begin", *args)
       result = guard.send(task_to_supervise, *args)
-      guard.hook "#{task_to_supervise}_end"
+      guard.hook("#{task_to_supervise}_end", result)
       result
     rescue Exception
       UI.error("#{guard.class.name} guard failed to achieve its <#{task_to_supervise}> command: #{$!}")

lib/guard/hook.rb

@@ -9,7 +9,7 @@ module Guard
       # from the symbol and calling method name. When passed
       # a string, #hook will turn the string into a symbol
       # directly.
-      def hook(event)
+      def hook(event, *args)
         hook_name = if event.is_a? Symbol
           calling_method = caller[0][/`([^']*)'/, 1]
           "#{calling_method}_#{event}".to_sym
@@ -17,8 +17,11 @@ module Guard
           event.to_sym
         end
 
+        if ENV["GUARD_ENV"] == "development"
           UI.info "\nHook :#{hook_name} executed for #{self.class}"
-        Hook.notify(self.class, hook_name)
+        end
+
+        Hook.notify(self.class, hook_name, *args)
       end
     end
 
@@ -38,9 +41,9 @@ module Guard
         callbacks[[guard_class, event]].include?(listener)
       end
 
-      def notify(guard_class, event)
+      def notify(guard_class, event, *args)
         callbacks[[guard_class, event]].each do |listener|
-          listener.call(guard_class, event)
+          listener.call(guard_class, event, *args)
         end
       end
 

spec/guard/hook_spec.rb

@@ -3,23 +3,16 @@ require 'spec_helper'
 describe Guard::Hook do
   subject { Guard::Hook }
 
-  class Guard::Dummy < Guard::Guard
-    include Guard::Hook
-
-    def run_all
-      hook :begin
-      hook :end
-    end
-  end
+  class Guard::Dummy < Guard::Guard; end
 
   let(:guard_class) { ::Guard::Dummy }
   let(:listener) { double('listener').as_null_object }
 
+  after { subject.reset_callbacks! }
+
   context "--module methods--" do
     before { subject.add_callback(listener, guard_class, :start_begin) }
 
-    after { subject.reset_callbacks! }
-
     describe ".add_callback" do
       it "can add a single callback" do
         subject.has_callback?(listener, guard_class, :start_begin).should be_true
@@ -34,8 +27,8 @@ describe Guard::Hook do
 
     describe ".notify" do
       it "sends :call to the given Guard class's callbacks" do
-        listener.should_receive(:call).with(guard_class, :start_begin)
-        subject.notify(guard_class, :start_begin)
+        listener.should_receive(:call).with(guard_class, :start_begin, "args")
+        subject.notify(guard_class, :start_begin, "args")
       end
 
       it "runs only the given callbacks" do
@@ -55,24 +48,55 @@ describe Guard::Hook do
   end
 
   describe "#hook" do
-    it "calls Guard::Hook.notify" do
-      guard = guard_class.new
-      Guard::Hook.should_receive(:notify).with(guard_class, :run_all_begin)
-      Guard::Hook.should_receive(:notify).with(guard_class, :run_all_end)
-      guard.run_all
-    end
-
-    it "if passed a string parameter, will use that for the hook name" do
+    before(:all) do
       guard_class.class_eval do
         def start
           hook "my_hook"
         end
+
+        def run_all
+          hook :begin
+          hook :end
         end
 
-      guard = guard_class.new
+        def stop
+          hook :begin, 'args'
+          hook 'special_sauce', 'first_arg', 'second_arg'
+        end
+      end
+
+      @guard = guard_class.new
+    end
+
+    it "calls Guard::Hook.notify" do
+      Guard::Hook.should_receive(:notify).with(guard_class, :run_all_begin)
+      Guard::Hook.should_receive(:notify).with(guard_class, :run_all_end)
+      @guard.run_all
+    end
+
+    it "if passed a string parameter, will use that for the hook name" do
       Guard::Hook.should_receive(:notify).with(guard_class, :my_hook)
-      guard.start
-    end
+      @guard.start
     end
 
+    it "accepts extra args" do
+      Guard::Hook.should_receive(:notify).with(guard_class, :stop_begin, 'args')
+      Guard::Hook.should_receive(:notify).with(guard_class, :special_sauce, 'first_arg', 'second_arg')
+      @guard.stop
+    end
+
+    context "--UI message--" do
+      it "is sent when in development mode" do
+        ENV["GUARD_ENV"] = 'development'
+        Guard::UI.should_receive(:info)
+        @guard.start
+        ENV["GUARD_ENV"] = 'test'
+      end
+
+      it "is not sent when not in development mode" do
+        Guard::UI.should_not_receive(:info)
+        @guard.start
+      end
+    end
+  end
 end

spec/guard_spec.rb

@@ -77,10 +77,14 @@ describe Guard do
           ::Guard.supervised_task(@g, :regular_with_arg, "given_path").should == "i'm a success"
         end
 
-        it "calls the default hooks" do
-          @g.should_receive(:hook).with("regular_begin")
-          @g.should_receive(:hook).with("regular_end")
-          ::Guard.supervised_task(@g, :regular)
+        it "passes the args to the :begin hook" do
+          @g.should_receive(:hook).with("regular_with_arg_begin", "given_path")
+          ::Guard.supervised_task(@g, :regular_with_arg, "given_path")
+        end
+
+        it "passes the result of the supervised method to the :end hook" do
+          @g.should_receive(:hook).with("regular_with_arg_end", "i'm a success")
+          ::Guard.supervised_task(@g, :regular_with_arg, "given_path")
         end
       end