Update rspec syntax to v3

update rspec syntax to v3

change syntax to rspec v3

oops. fix typo

mailers classes with rspec3 syntax

helpers with rspec3 syntax

jobs with rspec3 syntax

serializers with rspec3 syntax

views with rspec3 syntax

support to rspec3 syntax

category spec with rspec3 syntax

spec/models/topic_embed_spec.rb

@@ -2,9 +2,9 @@ require 'spec_helper'
 
 describe TopicEmbed do
 
-  it { should belong_to :topic }
-  it { should belong_to :post }
-  it { should validate_presence_of :embed_url }
+  it { is_expected.to belong_to :topic }
+  it { is_expected.to belong_to :post }
+  it { is_expected.to validate_presence_of :embed_url }
 
   context '.import' do
 
@@ -14,42 +14,42 @@ describe TopicEmbed do
     let(:contents) { "hello world new post <a href='/hello'>hello</a> <img src='/images/wat.jpg'>" }
 
     it "returns nil when the URL is malformed" do
-      TopicEmbed.import(user, "invalid url", title, contents).should == nil
-      TopicEmbed.count.should == 0
+      expect(TopicEmbed.import(user, "invalid url", title, contents)).to eq(nil)
+      expect(TopicEmbed.count).to eq(0)
     end
 
     context 'creation of a post' do
       let!(:post) { TopicEmbed.import(user, url, title, contents) }
 
       it "works as expected with a new URL" do
-        post.should be_present
+        expect(post).to be_present
 
         # It uses raw_html rendering
-        post.cook_method.should == Post.cook_methods[:raw_html]
-        post.cooked.should == post.raw
+        expect(post.cook_method).to eq(Post.cook_methods[:raw_html])
+        expect(post.cooked).to eq(post.raw)
 
         # It converts relative URLs to absolute
-        post.cooked.start_with?("hello world new post <a href=\"http://eviltrout.com/hello\">hello</a> <img src=\"http://eviltrout.com/images/wat.jpg\">").should == true
+        expect(post.cooked.start_with?("hello world new post <a href=\"http://eviltrout.com/hello\">hello</a> <img src=\"http://eviltrout.com/images/wat.jpg\">")).to eq(true)
 
-        post.topic.has_topic_embed?.should == true
-        TopicEmbed.where(topic_id: post.topic_id).should be_present
+        expect(post.topic.has_topic_embed?).to eq(true)
+        expect(TopicEmbed.where(topic_id: post.topic_id)).to be_present
       end
 
       it "Supports updating the post" do
         post = TopicEmbed.import(user, url, title, "muhahaha new contents!")
-        post.cooked.should =~ /new contents/
+        expect(post.cooked).to match(/new contents/)
       end
 
       it "Should leave uppercase Feed Entry URL untouched in content" do
         cased_url = 'http://eviltrout.com/ABCD'
         post = TopicEmbed.import(user, cased_url, title, "some random content")
-        post.cooked.should =~ /#{cased_url}/
+        expect(post.cooked).to match(/#{cased_url}/)
       end
 
       it "Should leave lowercase Feed Entry URL untouched in content" do
         cased_url = 'http://eviltrout.com/abcd'
         post = TopicEmbed.import(user, cased_url, title, "some random content")
-        post.cooked.should =~ /#{cased_url}/
+        expect(post.cooked).to match(/#{cased_url}/)
       end
     end