specs for the public transport agent

app/models/agents/public_transport_agent.rb

@@ -63,7 +63,7 @@ module Agents
         predictions = page.css("//prediction")
         predictions.each do |pr|
           parent = pr.parent.parent
-          vals = {routeTitle: parent["routeTitle"], stopTag: parent["stopTag"]}
+          vals = {"routeTitle" => parent["routeTitle"], "stopTag" => parent["stopTag"]}
           if pr["minutes"] && pr["minutes"].to_i < options["alert_window_in_minutes"].to_i
             vals = vals.merge Hash.from_xml(pr.to_xml)
             if not_already_in_memory?(vals)

spec/models/agents/public_transport_agent_spec.rb

@@ -0,0 +1,57 @@
+
+require 'spec_helper'
+require 'pry'
+describe Agents::PublicTransportAgent do
+  before do
+    valid_params = {
+    "name" => "sf muni agent",
+    "options" => {
+        "alert_window_in_minutes" => "20",
+        "stops" => ['N|5221', 'N|5215'],
+        "agency" => "sf-muni"
+      }
+    }
+    @agent = Agents::PublicTransportAgent.new(valid_params)
+    @agent.user = users(:bob)
+    @agent.save!
+  end
+  describe "#check" do
+    before do
+      stub_request(:get, "http://webservices.nextbus.com/service/publicXMLFeed?a=sf-muni&command=predictionsForMultiStops&stops=N%7C5215").
+         with(:headers => {'User-Agent'=>'Typhoeus - https://github.com/typhoeus/typhoeus'}).
+         to_return(:status => 200, :body => File.read(Rails.root.join("spec/data_fixtures/public_transport_agent.xml")), :headers => {})
+      stub(Time).now {"2014-01-14 20:21:30 +0500".to_time}
+    end
+    it "should create 4 events" do
+      lambda { @agent.check }.should change {@agent.events.count}.by(4)
+    end
+    it "should add 4 items to memory" do
+      @agent.memory.should == {}
+      @agent.check
+      @agent.memory.should == {"existing_routes" => [{"stopTag"=>"5221", "tripTag"=>"5840324", "epochTime"=>"1389706393991", "currentTime"=>"2014-01-14 20:21:30 +0500"}, {"stopTag"=>"5221", "tripTag"=>"5840083", "epochTime"=>"1389706512784", "currentTime"=>"2014-01-14 20:21:30 +0500"}, {"stopTag"=>"5215", "tripTag"=>"5840324", "epochTime"=>"1389706282012", "currentTime"=>"2014-01-14 20:21:30 +0500"}, {"stopTag"=>"5215", "tripTag"=>"5840083", "epochTime"=>"1389706400805", "currentTime"=>"2014-01-14 20:21:30 +0500"}]
+      }
+    end
+    it "should not create events twice" do
+      lambda { @agent.check }.should change {@agent.events.count}.by(4)
+      lambda { @agent.check }.should_not change {@agent.events.count}
+    end
+  end
+  describe "validation" do
+    it "should validate presence of stops" do
+      @agent.options['stops'] = nil
+      @agent.should_not be_valid
+    end
+
+    it "should validate presence of agency" do
+      @agent.options['agency'] = ""
+      @agent.should_not be_valid
+    end
+
+    it "should validate presence of alert_window_in_minutes" do
+      @agent.options['alert_window_in_minutes'] = ""
+      @agent.should_not be_valid
+    end
+
+  end
+
+end