Add ability to update tasks

lib/tracker_api/endpoints/task.rb

@@ -9,7 +9,18 @@ def initialize(client)
 
       def create(project_id, story_id, params={})
         data = client.post("/projects/#{project_id}/stories/#{story_id}/tasks", params: params).body
-        Resources::Task.new(data)
+        Resources::Task.new({ client: client }.merge(data))
+      end
+
+      def update(task, params={})
+        raise ArgumentError, 'Valid task required to update.' unless task.instance_of?(Resources::Task)
+
+        data = client.put("/projects/#{task.project_id}/stories/#{task.story_id}/tasks/#{task.id}",
+                          params: params).body
+
+        task.attributes = data
+        task.clean!
+        task
       end
     end
   end

lib/tracker_api/endpoints/tasks.rb

@@ -12,7 +12,9 @@ def get(project_id, story_id, params={})
         raise Errors::UnexpectedData, 'Array of tasks expected' unless data.is_a? Array
 
         data.map do |task|
-          Resources::Task.new({ story_id: story_id }.merge(task))
+          Resources::Task.new({ client: client,
+                                project_id: project_id,
+                                story_id: story_id }.merge(task))
         end
       end
     end

lib/tracker_api/resources/task.rb

@@ -3,13 +3,32 @@ module Resources
     class Task
       include Shared::Base
 
+      attribute :client
+
+      attribute :project_id, Integer
       attribute :story_id, Integer
       attribute :description, String
       attribute :complete, Boolean
       attribute :position, Integer
       attribute :created_at, DateTime
       attribute :updated_at, DateTime
       attribute :kind, String
+
+      class UpdateRepresenter < Representable::Decorator
+        include Representable::JSON
+
+        property :id
+        property :description
+        property :complete
+        property :position
+      end
+
+      def save
+        raise ArgumentError, 'Cannot update a task with an unknown project_id.' if project_id.nil?
+        raise ArgumentError, 'Cannot update a task with an unknown story_id.' if story_id.nil?
+
+        Endpoints::Task.new(client).update(self, UpdateRepresenter.new(Task.new(self.dirty_attributes)))
+      end
     end
   end
 end

test/task_test.rb

@@ -0,0 +1,27 @@
+require_relative 'minitest_helper'
+
+describe TrackerApi::Resources::Task do
+  let(:pt_user) { PT_USER_1 }
+  let(:client) { TrackerApi::Client.new token: pt_user[:token] }
+  let(:project_id) { pt_user[:project_id] }
+  let(:project) { VCR.use_cassette('get project') { client.project(project_id) } }
+  let(:story_id) { '66728004' }
+  let(:story) { VCR.use_cassette('get story') { project.story(story_id) } }
+  let(:tasks) { VCR.use_cassette('get tasks', record: :new_episodes) {
+                  VCR.use_cassette('get tasks for story') { story.tasks } } }
+  let(:task) { tasks.first }
+
+  it 'can update an existing task' do
+    new_description = "#{task.description}+"
+    task.description = new_description
+    task.complete = true
+
+    VCR.use_cassette('save task', record: :new_episodes) do
+      task.save
+    end
+
+    task.description.must_equal new_description
+    task.complete.must_equal true
+    task.clean?.must_equal true
+  end
+end

test/vcr/cassettes/save_task.json

@@ -0,0 +1 @@
+{"http_interactions":[{"request":{"method":"put","uri":"https://www.pivotaltracker.com/services/v5/projects/1027488/stories/66728004/tasks/22778038","body":{"encoding":"UTF-8","string":"{\"description\":\"Check unscaled+\",\"complete\":true}"},"headers":{"User-Agent":["Ruby/2.1.3 (x86_64-darwin15.0; ruby) TrackerApi/1.0.0 Faraday/0.9.2"],"X-TrackerToken":["d55c3bc1f74346b843ca84ba340b29bf"],"Content-Type":["application/json"]}},"response":{"status":{"code":200,"message":null},"headers":{"Content-Type":["application/json; charset=utf-8"],"Status":["200 OK"],"Cache-Control":["max-age=0, private, must-revalidate"],"Date":["Fri, 18 Mar 2016 19:14:30 GMT"],"X-Tracker-Project-Version":["122"],"X-Request-Id":["8e0ec08fef65b2f8fa9bae27a697c8db"],"X-UA-Compatible":["IE=Edge,chrome=1"],"ETag":["\"914ce4063b95be351bc4878e1242b175\""],"X-Runtime":["0.175452"],"X-Rack-Cache":["invalidate, pass"],"X-Powered-By":["Phusion Passenger Enterprise"],"Server":["nginx + Phusion Passenger"],"Access-Control-Allow-Origin":["*"],"Access-Control-Allow-Credentials":["false"],"Access-Control-Allow-Methods":["GET, POST, PUT, DELETE, OPTIONS"],"Access-Control-Allow-Headers":["X-TrackerToken,DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,X-Tracker-Warn-Unless-Project-Version-Is"],"X-Tracker-Client-Pinger-Interval":["12"]},"body":{"encoding":"UTF-8","string":"{\"kind\":\"task\",\"id\":22778038,\"story_id\":66728004,\"description\":\"Check unscaled+\",\"complete\":true,\"position\":1,\"created_at\":\"2014-06-02T12:44:52Z\",\"updated_at\":\"2016-03-18T19:14:30Z\"}"},"http_version":null},"recorded_at":"Fri, 18 Mar 2016 19:14:30 GMT"}],"recorded_with":"VCR 3.0.1"}