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03 Writing custom steps
Custom steps let you define your own steps like
Then I login as "Rune". When you want to use a custom step you have to specify an implementation which realizes what that step is supposed to do. This is done by writing a little bit of Ruby code.
Custom step definitions
To write custom steps you must create a file named
..._steps.rb in the directory
features/step_definitions. If you ran the command
calabash-ios gen then that should have generated a file you can use:
krukow:~/github/calabash-ios-example$ ls features/step_definitions/ calabash_steps.rb my_first_steps.rb
Take a look at the file
Given /^I am on the Welcome Screen$/ do check_element_exists("view") end
This is an example step definition matching the step "Given I am on the Welcome Screen". The block of Ruby code contained in
do ... end is the code that is executed when cucumber encounters "Given I am on the Welcome Screen". You can put any Ruby code in here. In this case a call to the function
check_element_exists("view") is made - this checks that there is actually a view present. This is not very interesting as the step will always pass.
Let's change that to actually check that we are on the welcome screen on the sample app. First we must identify some part of the UI that will only be present if we're on the welcome screen. We can then use this as our check. In the sample app, there is a text field with placeholder "Name". So let's change the test to check for the existence of this:
Given /^I am on the Welcome Screen$/ do check_element_exists("textField placeholder:'Name'") end
and run it:
krukow:~/github/calabash-ios-example$ cucumber Feature: Running a test As an iOS developer I want to have a sample feature file So I can begin testing quickly Scenario: Example steps ... Given I am on the Welcome Screen # features/step_definitions/my_first_steps.rb:1 Then I swipe left # calabash-cucumber- 0.9.127.pre1/features/step_definitions/calabash_steps.rb:190 And I wait until I don't see "Please swipe left" # calabash-cucumber- 0.9.127.pre1/features/step_definitions/calabash_steps.rb:128 And take picture # calabash-cucumber-0.9.127.pre1/features/step_definitions/calabash_steps.rb:185 1 scenario (1 passed) 4 steps (4 passed)
Just to see it fail, try replacing
'Username' and run the test again.