Tag: ruby

Steak vs Cucumber as BDD tools

When I joined the world of Ruby on Rails development and testing I was quite happy with all the tools and testing frameworks available, I was using a lot of them during development process. Words like Rspec and Cucumber quickly became part of my vocabulary, along with other ‘magic’ words like Kanban and Scrum. BDD, or ‘Behaviour Driven Development‘ became a permanent part of my life!

It’s crucial for a project, that the features that a customer would like to have implemented into the finished product are captured as well defined stories early on. We’ll eventually use these stories as a template for our tests. Cucumber is an especially good tool for using these stories as templates for testing. So what is Cucumber and what does it look like?

Here’s the explanation on Cucumber’s own wiki.

Cucumber is a tool that executes plain-text functional descriptions as automated tests. The language that Cucumber understands is called Gherkin.

Here is an example:

As you can see, Cucumber allows you to easily describe the behaviour of your new feature. In fact, it’s that good that some of our customers are using Cucumber descriptions as the acceptance criteria on their project’s stories. So where’s the catch? Well, not everything in cucumber is as easy as it may look. Even though cucumber has lot of pre-defined “phrases” to describe the behaviour of an application, you soon find out that sometimes it can be really tricky to preserve the readability of stories that are more complex than just: “And I should see ‘a yellow box” for example. When it gets tricky it gets really time consuming. And even if you know that implementing the related functionality is really easy – writing the proper, readable cucumber test that makes sense is sometimes very hard. I’m not complaining about writing tests in general. I’m complaining about how hard it is sometimes to achieve basic readability of tests! Does the average customer really have to understand the tests we use? If they do, then ok – I’m here and I’m prepared to write those nice, readable tests for them.  But what if they don’t care? Well there is another way around: the solution is called Steak.  So what is Steak? Steak is an Acceptance BDD solution (like Cucumber) but in plain ol’ Ruby. This is how an acceptance spec looks in Steak…

As you can see, there is a Feature description and a Scenario description, but the rest is Ruby language with Capybara syntax. But why do I think this is so special, and why do I think you should use it? Well it’s much, much faster to write those complex, yet readable tests, and it’s easy to maintain.

Recently, I was working on a tough project where I was the only back-end developer and there was one front-end developer; let’s call him Tom. At the start of this project we were using Cucumber. It took such a long time to write some of the tests, and because there were a lot of front end changes, we had to fix and re-write a lot of these Cucumber tests. Tom found he wasn’t that comfortable writing Cucumber scenarios, so it took him longer to fix them. At the start of the new iteration, I decided to use Steak instead of Cucumber. I discussed with Tom how Steak works, and he preferred it immediately. We started implementing new stories and development suddenly went really well and much quicker. I was writing Steak stories much faster, and Tom was faster too. So, by the end of the iteration there was no complaining about fixing Cucumber stories, and there was a lot more delivered functionality; them were some good times.

Is it Steak final solution?

Maybe, maybe not. It really depends on you and your customer’s needs, but what you really should do is to try it out yourself. You will see how much faster your development process can became.

Quick example of testing login form with mechanize and Test::Unit

I started testing with Ruby. So i first use Test::Unit and then i want to test some functionality on web. I read some examples at mechanize documentation, which is here or at your ruby/gems directory. So let’s look at the code.
require ‘mechanize’
require ‘test/unit’

class LoginTest < Test::Unit::TestCase
def test_login

#creating mechanize object
agent = WWW::Mechanize.new

#setting url
page = agent.get(‘https://zaparka.cz/wp-login.php’)

# get first html form on page, u can use page.form(‘form_name’)
login_form = page.forms.first

#fill value <input type=”text” name=”log” /> with login name
login_form.log = ‘name’

#fill value <input name=”pwd” type=”password” /> with password
login_form.pwd = ‘secrets’

#submiting form and saving result page to value page
page = google_form.submit()

# test if login was succesflull
assert_equal ‘Dashboard ‹ Petr Zaparka — WordPress’, page.title

end
end
 It’s very easy and simply. However you can’t test javasript functionality. Next time i post testing with WEBRAT.

How to add second mysql server with installed WAMP

Because I started  learning Ruby on Rails I needed to run some database server for ruby. I like mysql.  I developing web aplications with WAMP (Windows + Apache + Mysql + PHP). So i tried to run Ruby on Rails with pre-installed version of mysql 5.1.33 but Rails didn’t work properly. I tried to find how to fix the problem bud it seems that Ruby on Rails has  some problems with mysql 5.1.33.

So i refused SQLite and PostgreSQL for my personal reasons, than only one option left, another mysql server. I downloaded mysql server 5.0. run installation and than configuration that failed in last item (security settings). But mysql server worked quite well.

I was wondering if Rails are going to accept another sqlserver. It didn’t let use say it did but i forget set different port to mysql server 5.0. So i had an idea that this port problem can cause the security problem. So i run configuaration tools set port to 3309 and click to final step and security problem appeared again.Never mind I thought. I added a line port: 3309 as you can see below,

development:
adapter: mysql
encoding: utf8
reconnect: false
database: blog_development
pool: 5
username: root
password: my_passwd
host: localhost
port: 3309

to database.yml in config folder of my project and run rake db:create.

Rails worked fine and WAMP too :).

So in short, you only need to set a different port to run 2 mysql servers at one pc.

PS: It may occur Error mesage  like:’ libmySQL.dll missing ‘ or something like that. You will fix this by copy libmySQL.dll from installed mysqlServer 5 directory (installedpath/mysql server 5.0/bin) to your ruby directory (installedpath/ruby/bin).

Start learning Ruby and Ruby on Rails framework

I has been developing Internet aplication about 9 years. In everyday work i use  PHP and AJAX technology. It is quite a long time ago when my friend Ladislav Martincik told me  about Ruby on Rails. I seen some amazing presentation of Rails framework he showed me. I wonder why I did not start learning and using Rails and Ruby at  that time. Maby it was too early for me or maybe i was  too lazy.

But …

I starting now. I bought book Begining Ruby on Rails last week. But the book seems to me that is little confusing. So i was browsing a little and I found this cool book called  ‘Poignant Guide to Ruby”. It is kind of unconventional but i love it. It is funny and very brightly written.  I’m looking forward to read more chapters tomorow.

Ps: I wonder how high can insects fly, because I live at 8th floor and it still bothers  me.