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JBehave Interview Questions: We have listed here the best JBehave Interview Questions and Answers. These JBehave Interview Questions are very helpful for the preparation of Jbehave Interview. You can also download here the best Jbehave Interview Questions PDF.
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A minimal jbehave maven project
I'm dipping my toes in BDD and learning the jbehave framework. I found it surprisingly difficult to find a simple, self-contained example to use as a starting point. I wanted a maven project that depended only on junit and jbehave.
Here's my minimal jbehave maven project; I hope it helps someone else get up and running quickly. Thanks to David Daedalus and Andreas Ebbert-Karroum, whose code I borrowed, trimmed, and mashed together.
Project Directory Structure
You need 4 files: pom.xml, AnnotatedSteps.java, RunJBehaveStoriesAsAJUnitTest.java, and Math.story in the following directories:
src/test/java/...package.../AnnotatedSteps.java src/test/java/...package.../RunJBehaveStoriesAsAJUnitTest.java src/test/resources/Math.story src/pom.xml
The filename Math.story is only significant in that RunJBehaveStoriesAsAJUnitTest's storyPaths method specifically looks for it. You could instead match patterns (like David Daedalus does) using one of StoryFinder's findPaths methods.
Source code
Edit: I didn't love the way the source was formatted here. Instead, I've created a repo over at bitbucket to house it.
The most interesting part is the scenario told in Math.story, an example written in the "given...when...then..." structure:
Scenario: 1 + 1 = 2 Given a variable x with value 1 When I add 1 to x Then x should be equal to 2
This is what appeals to me about BDD: examples drive feature development. These examples later serve as automated regression tests. You're also creating living technical documentation with these examples; it's never out of date because it's executable.
Running
run on the command line with mvn clean test
...snip... (BeforeStories) Running story Math.story (Math.story) Scenario: 1 + 1 = 2 Given a variable x with value 1 When I add 1 to x Then x should be equal to 2 (AfterStories) ...snip...
BDD: Comparando Cucumber con JBehave (y Serenity)
"Kame-Kame-Ha"
-- Goku (dragonball)
...
"Cooh-Koom-Bar"
-- Mr. Pelao (arquitecto)
Hace más o menos un mes atrás, el arquitecto del proyecto empezó a gritar "Cooh koom bar" como poseído por todos lados (así pronuncia "Cucumber" el pelao ese). Sin embargo, no tenía mucha idea de lo que es. Así que en vez de ponerse a investigar (el tío tiene mucho tiempo libre), le está pidiendo a la gente de QA que lo aplique (y QA no tiene ni idea de cómo programar ni "hello world")
En fin, background: no hay ninguna razón oficial por la que el arquitecto escogió Cucumber, así que dedicaremos este blog a hacer una comparativa entre las 2 herramientas más populares para hacer BDD en Java por si acaso me toca a mí hacer la investigación de Cooh-Koom-Bar.
Cucumber vs. JBehave
Cucumber tiene menos documentación para Java, pero una vez que está instalado, la información de cómo usarlo es bastante buena (gracias al gran soporte de cucumber en los proyectos de ruby). JBehave esta mejor documentado, pero como casi toda aplicación de Java, la documentación es aburrida y pesada para leer (al menos para mí) :p
JBehave es super poderoso, pero no es tan bueno con el stándard Gherkin (Cucumber siempre parece estar uno o dos pasos adelante en eso)
Si quieres usar el super cool Serenity ara ayudar con los reportes y toda esa makana que le gusta a los jefes, JBehave gana, aunque también existe soporte para Cucumber.
Hay un artículo de hace un par de años comparando ambos aquí. Se puede usar como guía de inicio, pero la verdad es que muchos de los "cons" que mencionaban ya no existen.
Y aquí están los google trends. Como "cucumber-jvm" no es muy buscado como tal, incluyo Cucumber (pero hay que tener en cuenta que esto incluye las versiones de cucumber para otros lenguajes, sobretodo Ruby)
Quién gana?
La respuesta es medio complicada. Asumiendo que todo tu proyecto es en Java (incluyendo front-end), esto es lo que sugeriría:
Si no tienes Product Owners o Analistas capaces de escribir BDD en Gherkin, usa jUnit y olvídate de BDD, porque sin soporte de los stakeholders, no funciona.
Si tus QA son incapaces de programar, escoge jBehave y mándalos a la mierda. Si saben programar, Cucumber-JVM.
Si tus programadores quieren aprender otro lenguaje (e.g. tu proyecto lo van a migrar a Python), migra de una vez y escoge cucumber (no el cucumber-jvm). Manda a la mierda al arquitecto que te está haciendo perder el tiempo escribiendo código en Java.
Si tus jefes quieren reportes bonitos, usa Serenity y dedica gente a escribir codigo en jBehave o Cucumber-JVM fuera de tu codigo principal. Y manda a la mierda en base al punto 2 arriba :p
Y ya.
Code example to setup a custom WebDriver using JBehave
BDD With JBehave
In my [previous post in this series](http://blog.frontierfrenzy.com/post/43309253549/starting-out-with-bdd) I started some BDD work by writing some stories/scenarios. I'm from a Java background, so I'm going to be using JBehave to kick things off. The next step is to map the above scenarios to Java using JBehave Annotations. **src/test/java/com/frontierfrenzy/model/test/PlayerSteps.java** package com.frontierfrenzy.model.test; import org.jbehave.core.annotations.Given; import org.jbehave.core.annotations.Then; import org.jbehave.core.annotations.When; import org.junit.Assert; import com.frontierfrenzy.model.Account; import com.frontierfrenzy.model.Player; public class PlayerSteps { private Player player; private Account account; @Given("a player with email address $email") public void aPlayer(String email) { player = new Player(email); } @When("he creates an account") public void createNewAccount() { account = new Account(player); } @Then("a new account is created") public void checkAccount() { // Don't do anything for now Assert.fail(); } } Here I have mapped the Given/When/Then steps to methods that get executed when they are matched. Note that the Player & Account classes don't exist yet so this won't compile, so lets create them. **src/main/java/com/frontierfrenzy/model/Player.java** package com.frontierfrenzy.model; public class Player { private String email ; public Player(String email) { this .email = email; } } **src/main/java/com/frontierfrenzy/model/Account.java** package com.frontierfrenzy.model; public class Account { private Player player ; public Account(Player player) { this .player = player; } } Okay having written that initial model, I'm not sure I've gotten the relationship correct, but I'm going to leave it for now until I come across a requirement that isn't supported by it. Next step is to get this running as part of my unit tests, I'll be extending JBehaves JUnitStory class which seems to do the wiring between JUnit and JBehave. As far as I can tell, the simplest implementation is as follows: public class PlayerStory extends JUnitStory { @Override public Configuration configuration() { return new MostUsefulConfiguration(); } } Which picks up my Player story file. Final step is to setup Maven to pull in the dependencies and run the tests. I thought I might be able to just have a pom with JBehave in it along with JUnit and the tests would get picked up as part of the test phase. Reading around that doesn't seem to be the case, but let me try it.... 4.0.0 modelVersion> com.frontierfrenzy game artifactId> 0.0.1-SNAPSHOT org.apache.maven.plugins maven-compiler-plugin 2.3.2 version> 1.7 source> 1.7 target> UTF-8 project.build.sourceEncoding> UTF-8 project.reporting.outputEncoding> org.jbehave jbehave-core 3.7.5 version> junit junit 4.11 version> Yep when I run mvn test it doesn't work. Back to the drawing board for my [next post]().
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Starting out with BDD
_Disclaimer – This blog series is going to be fairly raw in that I’m going to capture my thoughts as they go through my head, while I am working and see how it turns out in code. You have been warned. I don’t claim to be an expert on BDD so you will likely see bad practices on the way. As these get highlighted to me (either through readers’ comments or self-realization) I’ll update the post as appropriate._ I’m having a go at using BDD to develop an application from scratch. I’m aiming to build a game, but to start with I’m going to write some fairly generic stories which could apply to any application that allows users to sign up and login. I’m going to start by just capturing the titles of my stories, and then dive in to expand on them in more detail as I progress. Stories: 1. Player can create a new account 2. Player can login 3. Player can logout 4. Player can manage his account These 4 stories are going to form my backlog and I’m going to deal with them in that order with #1 being highest priority and so on. Iteration 1 will tackle the first story, so let’s get on with it and expand it out using the “As a…I want…So that” pattern that is recommended as the approach to take [see http://dannorth.net/introducing-bdd/] Story: Player can create a new account Narrative: As a player I want to be able to create a new player account So I can play the game Scenario 1: Given a player with email address [email protected] When he creates an account Then a new account is created I will need to add in things for incorrect email address's and for players that already exist that sort of thing, but we will stick with this relatively simplistic version for now, but we will expand as we progress. The [next post in the series](http://blog.frontierfrenzy.com/post/43309958290/bdd-with-jbehave) will expand on this scenario and get some code going.
Consultas e Validações: BDD com JBehave
BDD é uma técnica de desenvolvimento ágil de software que visa guiar a codificação e os testes a partir de aspectos comportamentais do sistema a ser desenvolvido. O JBehave é um dos frameworks que implementa esta técnica.
Vantagens
Envolve especialistas no negócio.
Estabelece uma linguagem comum para especificar e testar.
Padroniza o desenvolvimento dos testes.
Pré-requisitos
IDE de desenvolvimento: Eclipse (download) + Plugin para Maven, o m2e (download).
Projeto de Exemplo: baixe aqui o fonte do projeto usado como exemplo neste post.
Comportamento
Considerando a seguinte user story:
Como administrador, Quero cadastrar usuários Para mante-los atualizados.
Esta user story reflete uma funcionalidade CRUD para gerenciamento da entidade usuário, o que requer testes de validação e consulta.
Validação
Considerando os seguintes cenários:
Cenário: Usuário válido deve ser salvo. Dado um usuário A com e-mail [email protected] Quando A for salvo Então A deve ser persistido pelo repositório. Cenário: Usuário sem e-mail não deve ser salvo. Dado um usuário B sem e-mail Quando B for salvo Então a obrigatoriedade do e-mail deve impedir a operação. Cenário: Usuário com e-mail inválido não deve ser salvo. Dado um usuário C com e-mail foo Quando C for salvo Então a validade do e-mail deve impedir a operação.
Nos cenários acima, encontramos as seguintes classes:
Usuario: entidade.
UsuarioService: serviço de gerenciamento de usuários.
UsuarioRepository: repositório de usuários.
Antes de ser persistido por UsuarioRepository, Usuario é validado por UsuarioService. Somente após garantir a integridade da entidade é que sua persistência é delegada para UsuarioRepository. Para este teste a lógica de persistência será mockeada.
Os cenários Usuário válido deve ser salvo, Usuário sem e-mail não deve ser salvo e Usuário com e-mail inválido não deve ser salvo garantem que Usuario só é persistido após passar pela validação.
Consulta
Considerando o seguinte cenário:
Cenário: Consulta a usuários deve permitir filtro por nome. Dado os usuários: |email| |[email protected]| |[email protected]| |[email protected]| Quando consultar por foo Então deve retornar os usuários [email protected] e [email protected].
Usuário é a entidade a ser consultada, enquanto UsuarioService é a classe que valida sua integridade. UsuarioService também integra com UsuarioRepository, sendo o primeiro responsável apenas pela validação, e encapsulando e abstraindo o segundo, este que é responsável pela persistência.
O cenário Consulta a usuários deve permitir filtro por nome garante que a consulta retornará o resultado esperado pelo cenário. Ele armazena os dados num banco em memória que só existe durante a execução dos passos:
Concluindo
O BDD estabeleceu não só as classes a serem criadas, como também a ordem de criação. Parte de uma user story, obtendo uma classe para cada critério de aceitação, os cenários. Nesses cenários são identificadas entidades, serviços e repositórios. Sendo assim, foi a necessidade do usuário, identificada pela user story, que direcionou quais classes, quando e porque devem ser criadas. É o desenvolvimento se aproximando do negócio e gerando somente componentes de software realmente pertinentes.
