Cucumber inspired syntax for Xcode UI tests

GreetingFeature.swift

final class GreetingFeature: Feature {
  override func scenarios() {

    Scenario("Greeting on first load")
      .Given("the app has launched")
      .Then("the text 'Hello, world!' is on screen")

  }
}

GreetingSteps.swift

final class GreetingSteps: StepDefinition {
  override func steps() {

    let app = XCUIApplication()

    Given("the app has launched") {
      app.launch()
    }

    Then("the text 'Hello, world!' is on screen") {
      expect(app.staticTexts["Hello, world!"].exists).to(beTrue())
    }

  }
}

import Nimble