Unit testing with Spock Framework
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The document discusses unit testing with the Spock testing framework. It introduces Spock and outlines key concepts like the three pillars of good unit tests, Spock idioms, mocks and stubs, and continuous integration. Spock provides an expressive testing language based on Groovy that makes tests more readable, maintainable and trustworthy. Examples demonstrate how to write feature methods, use blocks, verify interactions, stub implementations, test exceptions, integrate with Spring, and perform HTTP calls and data-driven testing with Spock.
![First SpecFirst Spec
import spock.lang.Specification
class GivenWhenThenSpec extends Specification {
def "test adding a new item to a set"() {
given:
def bag = [4, 6, 3, 2] as Set
when:
bag << 1
then:
bag.size() == 5](https://image.slidesharecdn.com/unittestspockwebmd1-130510122025-phpapp01/85/Unit-testing-with-Spock-Framework-11-320.jpg)
![Spring IntegrationSpring Integration
• @ContextConfiguration([classpath:app-config.xml])
• @Autowired
• demo](https://image.slidesharecdn.com/unittestspockwebmd1-130510122025-phpapp01/85/Unit-testing-with-Spock-Framework-21-320.jpg)
![HTTP callsHTTP calls
• For Spring apps – use Spring REST Template
• For others – use Groovy HTTP Builder or Selenium
def http = new HTTPBuilder( 'http://ajax.googleapis.com' )
// perform a GET request, expecting JSON response data
http.request( GET, JSON ){
uri.path = '/ajax/services/search/web'
uri.query = [ v:'1.0', q: 'Calvin and Hobbes' ]
headers.'User-Agent' = 'Mozilla/5.0 Ubuntu/8.10 Firefox/3.0.4'
// response handler for a success response code:
response.success = {
resp, json -> println resp.statusLine
// parse the JSON response object:
json.responseData.results.each {
println " ${it.titleNoFormatting} : ${it.visibleUrl}“
}
}](https://image.slidesharecdn.com/unittestspockwebmd1-130510122025-phpapp01/85/Unit-testing-with-Spock-Framework-22-320.jpg)
Unit testing with Spock Framework
- 1. Unit TestingUnit Testing with Spock framework
- 2. AgendaAgenda Three qualities of good unit test Introduction to Spock Spock Idioms Mocks and Stubs Continuous Integration Pipeline Code coverage analysis
- 3. Why Unit testsWhy Unit tests • Catch mistakes and avoid reworks Another production issue
- 4. Why Unit testsWhy Unit tests • Shape design of our code
- 5. Why Unit testsWhy Unit tests •Increased Productivity (shipped product) •Cheaper to solve problems
- 6. Trustworthiness - trustworthy tests don’t have bugs and they test the right things. They don’t “cry wolf” 3 Pillars of Good3 Pillars of Good Unit TestUnit Test
- 7. Trustworthiness - trustworthy tests don’t have bugs and they test the right things. They don’t “cry wolf” Maintablility - Developers will simply stop maintaining and fixing tests that takes too long to change 3 Pillars of Good3 Pillars of Good Unit TestUnit Test
- 8. Trustworthiness - trustworthy tests don’t have bugs and they test the right things. They don’t “cry wolf” Maintablility - Developers will simply stop maintaining and fixing tests that takes too long to change Readability - this means not just be able to read tests but also figuring out the problem if tests seems to be wrong. Without readability, other 2 pillars fall pretty quickly. 3 Pillars of Good3 Pillars of Good Unit TestUnit Test
- 9. Spock FrameworkSpock Framework Leverage Groovy
- 10. Spock FrameworkSpock Framework Leverage Groovy Expressive testing language Easy to Learn Reduce the line of test code Productivity Structural blocks - BDD style -context, stimulus, expectation
- 11. First SpecFirst Spec import spock.lang.Specification class GivenWhenThenSpec extends Specification { def "test adding a new item to a set"() { given: def bag = [4, 6, 3, 2] as Set when: bag << 1 then: bag.size() == 5
- 12. Feature methodFeature method // feature method def “test adding a new item to a set” () { // block goes here } heart of spec Four phases setup the features fixture provide stimulus to the system describe the response clean up
- 13. BlocksBlocks given: precondition, data fixture when: actions that trigger some outcome then: makes assertions about outcode expect: short alt to when & then where: applies varied inputs setup: alias for given and: sub-divided other blocks cleanup: post-condition, cleanup
- 14. CP Platform DemoCP Platform Demo UserTacticRepository.java - method findByUid(String uid)
- 15. Mock and InteractionMock and Interaction verificationverification Spock has build-in support for mocking Subscriber sub=Mock() or def sub=Mock(Subscriber) DSL for specifying interaction 2 * sub.receive(“msg”)
- 16. CP DEMO InteractionCP DEMO Interaction EventController - captureEvent (Tactic dismissal for IPP event) Test class EventControllerTest 1 * userTacticRepository.deactivateTactic(_,_,_)
- 17. StabbingStabbing Implementations can be stabbed out easily • EmailSender sender=Mock() • String send(String msg) {.... } • sender.send(_) >> “ok”
- 18. CP Demo StabbingCP Demo Stabbing EventServiceImpl - getTargetListByUid and Event ServiceTest stabbing - targetListRepository.findByUid(_) >> users
- 19. Testing exceptionsTesting exceptions testing code that throws exceptions • when: • someBadMethod() • then: • def exception=thrown(IllegalStateException) • exception.message==”bad exception”
- 20. CP Demo - ExceptionsCP Demo - Exceptions Event Controller Test - sending incomplete event object and expect IncorrectEventException be thrown • then: ‘Exception is thrown’ •thrown (IncorrectEventException)
- 21. Spring IntegrationSpring Integration • @ContextConfiguration([classpath:app-config.xml]) • @Autowired • demo
- 22. HTTP callsHTTP calls • For Spring apps – use Spring REST Template • For others – use Groovy HTTP Builder or Selenium def http = new HTTPBuilder( 'http://ajax.googleapis.com' ) // perform a GET request, expecting JSON response data http.request( GET, JSON ){ uri.path = '/ajax/services/search/web' uri.query = [ v:'1.0', q: 'Calvin and Hobbes' ] headers.'User-Agent' = 'Mozilla/5.0 Ubuntu/8.10 Firefox/3.0.4' // response handler for a success response code: response.success = { resp, json -> println resp.statusLine // parse the JSON response object: json.responseData.results.each { println " ${it.titleNoFormatting} : ${it.visibleUrl}“ } }
- 24. Spock data pipesSpock data pipes
- 25. There is moreThere is more @Fast - @Slow @AutoCleanUp - clean up/close resources Async testing support Data Driven for parametirized tests Get it from Maven Central 07-groovy-2.0 https://code.google.com/p/spock/
- 26. Comprehensive ApproachComprehensive Approach to Improve Qualityto Improve Quality Automated Unit Tests Automated Acceptance Test Continuous Integration Code quality analysis Measurable values: number of defects and rework
- 28. Action PlanAction Plan • Install Spock and Groovy • Write test to cover existing BUG • Write test as you write more code