CucumberSwiftBeta 0.0.7

CucumberSwiftBeta 0.0.7

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Maintained by Tyler Thompson.

CucumberSwiftBeta 0.0.7

  • By
  • Tyler Thompson
This library is deprecated.

CucumberSwift

CucumberSwift is a lightweight Cucumber implementation for swift. It was born out of frustration with current iOS Cucumber implementations. The whole goal is to make it easy to install and easy to use, so please feel free to give feedback.

Installation

Cocoapods

Add this line to your podfile:

    pod 'CucumberSwift'

XCode

After you install CucumberSwift open the info.plist file of your test target. You'll want the set the Principal Class to CucumberSwift.Cucumber. If you prefer editing your plists from source it should look like this:

	<key>NSPrincipalClass</key>
	<string>CucumberSwift.Cucumber</string>

image

How do I use it?

CucumberSwift is designed to be run with XCTest. To start implementing some step definitions extend Cucumber with the StepImplementation protocol.

import Foundation
import XCTest
import CucumberSwift

extension Cucumber: StepImplementation {
    public func setupSteps() {
        //Step definitions
        Given("Something (matches|matched)") { (matches, _) in
            //assuming match is "Something matched"
            print(matches[0]) //Something matched
            print(matches[1]) //matched
        }

        When("Something (matches|matched)") { (matches, _) in
            //assuming match is "Something matched"
            print(matches[0]) //Something matched
            print(matches[1]) //matched
        }

        Then("Something (matches|matched)") { (matches, _) in
            //assuming match is "Something matched"
            print(matches[0]) //Something matched
            print(matches[1]) //matched
        }

        And("Something (matches|matched)") { (matches, _) in
            //assuming match is "Something matched"
            print(matches[0]) //Something matched
            print(matches[1]) //matched
        }

        But("Something (matches|matched)") { (matches, _) in
            //assuming match is "Something matched"
            print(matches[0]) //Something matched
            print(matches[1]) //matched
        }

        MatchAll("Something (matches|matched)") { (matches, _) in
            //assuming match is "Something matched"
            print(matches[0]) //Something matched
            print(matches[1]) //matched
        }
    }
}

Generated step stubs

Writing regex can be a pain, rather than make you look up everything CucumberSwift will help you out by generating swift code with stubs for step definitions

image

Hooks

CucumberSwift comes with 6 hooks, Before/After Feature Before/After Scenario and Before/After step, use them like so

import Foundation
import XCTest
import CucumberSwift

extension Cucumber: StepImplementation {
    public func setupSteps() {
        BeforeFeature { feature in

        }
        
        AfterFeature { feature in
            
        }
        
        BeforeScenario { scenario in
            
        }

        AfterScenario { scenario in
            
        }

        BeforeStep { step in
            
        }

        AfterStep = { step in
            
        }
    }
}

Tags

You can specify what tags are supposed to be run by using the environment variable CUCUMBER_TAGS. This can be set by going to edit scheme -> test -> environment variables. Pass in a comma delimited list of tags to run.

Data Tables

There are two categories of data table, one of them is in a scenario outline

Examples:

Examples let gherkin handle the data for you, individual scenarios are created that iterate over the table and inject the values

Feature: Some terse yet descriptive text of what is desired
        
    Background:
        Given I am logged in
    
    Scenario Outline: <user> logs in # 1st: Dave, 2nd: Bob
        Given a user named <user> # 1st: Dave, 2nd: Bob
            And a password <password> # 1st: hello, 2nd: *%&#*#!!
        When <user> logs in # 1st: Dave, 2nd: Bob
        Then <user> sees <account balance> # 1st: $0, 2nd: $20,000

        Examples:
            | user  | password | account balance |
            | Dave  | hello    | $0              |
            | Bob   | *%&#*#!! | $20,000         |

Test Data:

Test data can be attached to a step and is handed off to the step implementation to deal with.

    Feature: Some terse yet descriptive text of what is desired
        Scenario: minimalistic
            Given a simple data table
            | foo | bar |
            | boz | boo |

This can be accessed with CucumberSwift with an optional dataTable property on the step object

import Foundation
import XCTest
import CucumberSwift

extension Cucumber: StepImplementation {
    public func setupSteps() {
        Given("^a simple data table$") { (_, step) in
            let dt = step.dataTable!
            let row = dt.rows[0]
            print(row[0]) //foo
            print(row[1]) //bar
        }
    }    
}

What's Still Missing?

  • Gherkin language errors
  • Rules
  • Docstrings
  • AND support for tags (currently when multiple tags are passed in it's treated as OR)