Add spec to validate behaviour of Async.logger.

async.gemspec

@@ -24,7 +24,7 @@ Gem::Specification.new do |spec|
 
 	spec.add_runtime_dependency "nio4r", "~> 2.3"
 	spec.add_runtime_dependency "timers", "~> 4.1"
-	spec.add_runtime_dependency "event", "~> 1.1"
+	spec.add_runtime_dependency "event", "~> 1.3"
 
 	spec.add_development_dependency "async-rspec", "~> 1.1"
 

lib/async/logger.rb

@@ -22,6 +22,7 @@
 require_relative 'task'
 
 module Async
+	# @return the current logger, either the active tasks logger, or the global event console logger.
 	def self.logger
 		if task = Task.current?
 			task.logger

spec/async/logger_spec.rb

@@ -46,6 +46,7 @@
 		Async do |parent|
 			parent.async(logger: logger) do |task|
 				expect(task.logger).to be == logger
+				expect(Async.logger).to be == logger
 			end.wait
 		end.wait
 	end
@@ -56,6 +57,7 @@
 
 			expect(parent.logger).to be == logger
 			expect(child.logger).to be == logger
+			expect(Async.logger).to be == logger
 		end.wait
 	end
 end