Add initial tests for posts

spec/factories/post.rb

@@ -0,0 +1,7 @@
+FactoryGirl.define do
+  factory :post do
+    sequence(:text) { |n| "Post Body #{n}" }
+    topic
+    user
+  end
+end

spec/models/post_spec.rb

@@ -0,0 +1,30 @@
+# == Schema Information
+#
+# Table name: posts
+#
+#  id          :integer          not null, primary key
+#  text        :text
+#  topic_id    :integer
+#  user_id     :integer
+#  created_at  :datetime
+#  updated_at  :datetime
+#  text_parsed :text
+#
+
+require "spec_helper"
+
+describe Post do
+  let!(:user) { create :user }
+
+  describe "create" do
+    let(:post) { build :post }
+
+    it "creates a new post" do
+      # expect(post.valid?).to eq(true)
+      post.topic = create :topic
+      expect do
+        post.save!
+      end.to change(Post, :count).by(1)
+    end
+  end
+end