Ruby Cucumber Interview Questions And Answers

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Are you looking for Ruby Cucumber Interview Questions 2018? If yes, then you are at right place. Here Mindmajix presenting a list of 15 Ruby Cucumber Interview Questions for Experienced & Freshers. These Cucumber interview questions help you in cracking your next job interview and acquire dream career as Ruby Cucumber Developer.

Ruby Cucumber Interview Questions

  1. What is Cucumber Tool?
  2. What is Gherkin language?
  3. What is Behavior-driven development (BDD)?
  4. Cucumber is written in which programming language?
  5. Gherkins files have which file extension?
  6. Cucumber tests are divided into how many parts?
  7. What is a Feature in Cucumber?
  8. What is a Scenario in Cucumber?
  9. What are Steps in Cucumber?
  10. What are Tags in Cucumber?
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Ruby Cucumber Interview Questions And Answers

1) What is Cucumber Tool?

A) Cucumber is a software tool used by computer programmers for testing other software. It runs automated acceptance tests written in a behavior-driven development style. Central to the Cucumber BDD approach is its plain language parser called Gherkin.

2) What is Gherkin language?

A) Gherkin is the language that Cucumber uses to define test cases. It is designed to be non-technical and human readable, and collectively describes use cases relating to a software system.

 The purpose behind Gherkin's syntax is to promote Behavior Driven Development practices across an entire development team, including business analysts and managers.

3) What is Behavior-driven development (BDD)?

A) Behavior-driven development (BDD) is a software development process that emerged from test-driven development (TDD). The behavior-driven development combines the general techniques and principles of TDD with ideas from domain-driven design and object-oriented analysis and design to provide software development and management teams with shared tools and a shared process to collaborate on software development.

4) Cucumber is written in which programming language?

A) Cucumber is written in the Ruby programming language. It was originally used exclusively for Ruby testing as a complement to the RSpec BDD framework. Cucumber now supports a variety of different programming languages through various implementations.

5) Gherkins files have which file extension?

A) All Gherkin files have the .feature file extension. They contain a single Feature definition for the system under test and are an executable test script.

6) Cucumber tests are divided into how many parts?

A) Cucumber tests are divided into individual Features. These Features are subdivided into Scenarios, which are sequences of Steps.

7) What is a Feature in Cucumber?

A) A feature is a Use Case that describes a specific function of the software being tested. There are three parts to a Feature [18]

  • The Feature: keyword
  • The Feature name (on the same line as the keyword)
  • An optional description on the following lines
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8) What is a Scenario in Cucumber?

A) Each Feature is made of a collection of scenarios. A single scenario is a flow of events through the Feature being described and maps 1:1 with an executable test case for the system.[18] Keeping with the example ATM withdrawal feature, a scenario might describe how a user requests money and what happens to their account.


9) What are Steps in Cucumber?

A) The crux of a Scenario is defined by a sequence of Steps outlining the preconditions and flow of events that will take place. The first word of a step is a keyword, typically one of.

  • Given - Describes the preconditions and initial state before the start of a test and allows for any pre-test setup that may occur
  • When - Describes actions taken by a user during a test
  • Then - Describes the outcome resulting from actions taken in the When clause

Occasionally, the combination of Given-When-Then uses other keywords to define conjunctions

  • And - Logical and
  • But - Logically the same as And, but used in the negative form

10) What are Tags in Cucumber?

A) Gherkin's Feature structure forces organization. However, in cases where this default organization is inconvenient or insufficient, Gherkin provides Tags. Tags are @-prefixed strings and can be placed before.

  • Feature
  • Scenario
  • Scenario Outline
  • Examples
  • An element can have multiple tags and inherits from parent elements.

Advanced Ruby Cucumber Interview Questions

11) What are Steps in Cucumber?

A) Steps in Gherkin's .feature files can be considered a method invocation. Before Cucumber can execute a step it must be told, via a step definition, how that step should be performed.

Definitions are written in Ruby and conventionally filed under features/step_definitions/*_steps.rb. Definitions start with the same keywords as their invocation (including Gherkin's full language support). Each definition takes two arguments.

Either a regular expression or string with $variables
A block containing ruby code to execute

12) What are Hooks in Cucumber?

A) Hooks are Cucumber's way of allowing for setup to be performed prior to tests being run and teardown to be run afterward. They are defined as executable Ruby blocks, similar to JUnit methods marked with @Before, @After annotations. Conventionally they are placed under support/, and are applied globally. Three basic types of hooks exist.

  • Before - Runs before a scenario
  • After - Runs after a scenario
  • Around - Assumes control and runs around a scenario

Additional hooks include

  • BeforeStep
  • AfterStep
  • AfterConfiguration - Runs after Cucumber configuration and is passed an instance of the configuration

13) What are Formatter Plugins in Cucumber?

A) Cucumber uses Formatter Plugins to provide output. Several common formats are provided by default, including

  • JSON
  • HTML
  • JUnit

14) How does Cucumber works with Browser Automation?

A) Cucumber does not provide built in browser automation. However, it does work well with existing gems such as Selenium and WATiR-WebDriver.[24] It does support running tests with transactions through leveraging other gems such as ActiveRecord.

15) What is Cucumber Command-Line interface?

A) Cucumber comes with a built-in command line interface that covers a comprehensive list of instructions. Like most command line tools, cucumber provides the --help option that provides a summary of arguments the command accepts.


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