Add subscribed? method to detect listener, bump to v1.1.1.

call_me_ruby.gemspec

@@ -2,7 +2,7 @@ $LOAD_PATH.unshift(File.join(__dir__, 'lib'))
 
 Gem::Specification.new do |gem|
   gem.name = 'call_me_ruby'
-  gem.version = '1.1.0'
+  gem.version = '1.1.1'
   gem.homepage = 'https://github.com/nathankleyn/call_me_ruby'
   gem.license = 'MIT'
 

lib/call_me_ruby.rb

@@ -47,4 +47,8 @@ def publish(name, *args)
 
     true
   end
+
+  def subscribed?(name)
+    self.class.class_callbacks.include?(name) || callbacks.include?(name)
+  end
 end

spec/lib/call_me_ruby_spec.rb

@@ -87,4 +87,22 @@ def failure
       subject.publish(:test)
     end
   end
+
+  describe('#subscribed?') do
+    it('returns true if an event is subscribed at the class level with the given name') do
+      subject.class.subscribe(:class_event, :success)
+
+      expect(subject.subscribed?(:class_event)).to be(true)
+    end
+
+    it('returns true if an event is subscribed at the instance level with the given name') do
+      subject.subscribe(:instance_event, :success)
+
+      expect(subject.subscribed?(:instance_event)).to be(true)
+    end
+
+    it('returns false if no events are subscribed with the given name') do
+      expect(subject.subscribed?(:failure)).to be(false)
+    end
+  end
 end