Alex Emelyanov holyketzer

Rails Rspec APIs Testing Notes

Folders Structure

  spec
  |--- apis #do not put into controllers folder. 
        |--- your_api_test_spec.rb  
  |--- controllers
  |--- models
  |--- factories
 |--- views

Capybara Actions

# Anchor
click_link 'Save'

# Button
click_button 'awesome'

# Both above

Commands examples

If the namespace is not used then the commands will perform on top of the default database. bundle exec rake db:create bundle exec rake db:migrate

By using the namespace we are going to use all the configuration for our alternate DB. bundle exec rake store:db:create bundle exec rake store:db:migrate

	module Count
	def fake_count
	words.count + 500
	end
	end

	class Thing
	def words
	%w(one two three)
	end

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

	-- http://stackoverflow.com/questions/1124603/grouped-limit-in-postgresql-show-the-first-n-rows-for-each-group
	-- http://www.postgresql.jp/document/9.2/html/tutorial-window.html

	CREATE TABLE empsalary (
	depname varchar(10) not null
	, empno integer not null
	, salary integer not null
	);

	INSERT INTO empsalary (depname, empno, salary) VALUES ('develop', 11, 5200);

	// layout file

	<body>
	<div class="container">

	<%= flash_messages %>

	<%= yield %>
	</div><!-- /container -->
	</body>

	// ranker is a helper type for the rank function.
	type ranker struct {
	f []float64 // Data to be ranked.
	r []int // A list of indexes into f that reflects rank order after sorting.
	}

	// ranker satisfies the sort.Interface without mutating the reference slice, f.
	func (r ranker) Len() int { return len(r.f) }
	func (r ranker) Less(i, j int) bool { return r.f[r.r[i]] < r.f[r.r[j]] }
	func (r ranker) Swap(i, j int) { r.r[i], r.r[j] = r.r[j], r.r[i] }

	# be sure to comment out the require 'capistrano/deploy' line in your Capfile!

	# config valid only for Capistrano 3.1
	lock '3.2.1'

	set :application, 'my-cool-application'

	# the base docker repo reference
	set :name, "johns-stuff/#{fetch(:application)}"

	# Basic example
	siege -t60s -c20 -d10 'http://robertomurray.co.uk/'

	# Basic auth;
	auth=$(echo -n 'username:password' \| openssl base64)
	siege -t60s -c20 -d10 --header="Authorization:Basic $auth" 'https://staging.a-hostname.co.uk/'