Add poll plugin.

plugins/poll/spec/poll_plugin/poll_controller_spec.rb

@@ -0,0 +1,51 @@
+require 'spec_helper'
+
+describe PollPlugin::PollController, type: :controller do
+  let(:topic) { create_topic(title: "Poll: Chitoge vs Onodera") }
+  let(:post) { create_post(topic: topic, raw: "Pick one.\n\n[poll]\n* Chitoge\n* Onodera\n[/poll]") }
+  let(:user1) { Fabricate(:user) }
+  let(:user2) { Fabricate(:user) }
+
+  it "should return 403 if no user is logged in" do
+    xhr :put, :vote, post_id: post.id, option: "Chitoge", use_route: :poll
+    response.should be_forbidden
+  end
+
+  it "should return 400 if post_id or invalid option is not specified" do
+    log_in_user user1
+    xhr :put, :vote, use_route: :poll
+    response.status.should eq(400)
+    xhr :put, :vote, post_id: post.id, use_route: :poll
+    response.status.should eq(400)
+    xhr :put, :vote, option: "Chitoge", use_route: :poll
+    response.status.should eq(400)
+    xhr :put, :vote, post_id: post.id, option: "Tsugumi", use_route: :poll
+    response.status.should eq(400)
+  end
+
+  it "should return 400 if post_id doesn't correspond to a poll post" do
+    log_in_user user1
+    post2 = create_post(topic: topic, raw: "Generic reply")
+    xhr :put, :vote, post_id: post2.id, option: "Chitoge", use_route: :poll
+    response.status.should eq(400)
+  end
+
+  it "should save votes correctly" do
+    log_in_user user1
+    xhr :put, :vote, post_id: post.id, option: "Chitoge", use_route: :poll
+    PollPlugin::Poll.new(post).get_vote(user1).should eq("Chitoge")
+
+    log_in_user user2
+    xhr :put, :vote, post_id: post.id, option: "Onodera", use_route: :poll
+    PollPlugin::Poll.new(post).get_vote(user2).should eq("Onodera")
+
+    PollPlugin::Poll.new(post).details["Chitoge"].should eq(1)
+    PollPlugin::Poll.new(post).details["Onodera"].should eq(1)
+
+    xhr :put, :vote, post_id: post.id, option: "Chitoge", use_route: :poll
+    PollPlugin::Poll.new(post).get_vote(user2).should eq("Chitoge")
+
+    PollPlugin::Poll.new(post).details["Chitoge"].should eq(2)
+    PollPlugin::Poll.new(post).details["Onodera"].should eq(0)
+  end
+end