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Ruby Sahi with Cucumber

Posted by | BDD, Cucumber, Ruby, Sahi | 8 Comments

What is Cucumber?

Cucumber lets software development teams describe how software should behave in plain text. The text is written in a business-readable domain-specific language and serves as documentation, automated tests and development-aid – all rolled into one format.
– From http://cukes.info/

Follow the steps below to get started with Ruby Sahi and Cucumber.

  1. Install Java
  2. Install Ruby
  3. Install cucumber:
    gem install cucumber
  4. Install Sahi proxy: Download Sahi from sourceforge and unzip to some location. (say D:sahi)
  5. Start Sahi:

    cd D:sahiuserdatabin
    start_sahi.bat

  6. Install Sahi Ruby client:
    gem install sahi
  7. Create a file D:testlogin.feature, add the content below and save it.

    Feature: Login
    In order to access the system
    As a user
    I want to be able to login

    Scenario: Login with valid credentials
    Given I am not logged in
    When I try to login with "test" and "secret"
    Then I should be logged in

    Scenario: Login with invalid credentials
    Given I am not logged in
    When I try to login with "test" and "wrongpassword"
    Then I should not be logged in
    And I should be shown error message "Invalid username or password"

  8. Run this feature:

    cd D:test
    cucumber login.feature

    There will be a lot of messages with hints on implementing the right steps.

  9. Implement the steps:

    Create a file D:testlogin.rb, add the content below and save it


    require 'sahi'

    def init_browser()
    #Use the correct paths from your system
    userdata_dir = "D:/sahi/userdata"
    browser_path = "C:\Program Files\Mozilla Firefox\firefox.exe"
    browser_options = "-profile #{userdata_dir}/browser/ff/profiles/sahi0 -no-remote"
    return Sahi::Browser.new(browser_path, browser_options)
    end

    #open the browser at the start
    browser = init_browser()
    browser.open

    #close the browser on exit
    at_exit do
    browser.close
    end

    Given /^I am not logged in$/ do
    browser.navigate_to("/demo/training/index.htm")
    end

    When /^I try to login with "([^"]*)" and "([^"]*)"$/ do |username, password|
    browser.textbox("user").value = username
    browser.password("password").value = password
    browser.submit("Login").click
    end

    Then /^I should be logged in$/ do
    if !browser.button("Logout").exists?()
    raise "Not logged in"
    end
    end

    Then /^I should not be logged in$/ do
    if !browser.submit("Login").exists?()
    raise "Logged in"
    end
    end

    Then /^I should be shown error message "([^"]*)"$/ do |msg|
    value = browser.div("errorMessage").text()
    if value != msg
    raise "Incorrect message: #{value}"
    end
    end

  10. Run and watch the tests complete successfully

    cd D:test
    cucumber login.feature

  11. Done!
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