add a spec and fix rspec matcher [wip]

lib/wisper/rspec/matchers.rb

@@ -7,7 +7,7 @@ def initialize(publisher, event)
       @event = event
     end
 
-    def matches?(block)
+    def matches?(&block)
       published = false
       @publisher.on(@event) { published = true }
 
@@ -34,4 +34,4 @@ def publish_event(publisher, event)
 
 RSpec::configure do |config|
   config.include(WisperMatchers)
-end
+end

spec/lib/wisper/rspec/matchers_spec.rb

@@ -0,0 +1,37 @@
+require 'spec_helper'
+require 'wisper/rspec/matchers'
+
+describe WisperMatchers::ShouldPublish do
+  let(:publisher) do
+    Class.new do
+      include Wisper::Publisher
+
+      def execute
+        broadcast(:it_happened)
+      end
+    end.new
+  end
+
+  describe '#matches?' do
+    it 'returns false when event not broadcast' do
+      matcher = WisperMatchers::ShouldPublish.new(publisher, :it_happened)
+      result = matcher.matches? { publisher }
+      expect(result).to be_falsey
+    end
+
+    it 'returns true when event broadcast' do
+      matcher = WisperMatchers::ShouldPublish.new(publisher, :it_happened)
+      result = matcher.matches? { publisher.execute }
+
+      expect(result).to be_truthy
+    end
+  end
+
+  describe 'full example' do
+    it 'expects event to be publisher when published' do
+      expect(publisher).to publish_event(publisher, :it_happened)
+
+      publisher.execute
+    end
+  end
+end