lib/time_block/agent.rb in time_block-0.1.0 vs lib/time_block/agent.rb in time_block-0.2.0

@@ -1,11 +1,16 @@
 # frozen_string_literal: true
 
+require 'English'
+
 module TimeBlock
   class Agent
+
+    class MissingPackageError < StandardError; end
+
     def initialize(time)
-      raise 'No terminal-notifier, please install it, brew install terminal-notifier' unless terminal_notifier_exist?
+      raise MissingPackageError.new('No terminal-notifier, please install it, brew install terminal-notifier') unless terminal_notifier_exist?
       @time = time
     end
 
     def run
       pre_callback
@@ -15,10 +20,10 @@
 
     private
 
     def terminal_notifier_exist?
       `which terminal-notifier`
-      $CHILD_STATUS.zero?
+      $CHILD_STATUS.success?
     end
 
     def pre_callback
       `terminal-notifier -message #{'Time is starting !!!'.dump} -title "TimeBlock - #{@time}s" -sound "default"`
     end