Realizando Pruebas con Spock

1. REALIZANDO
PRUEBAS CON
SPOCK
ANDRES ALMIRAY
@AALMIRAY
ANDRESALMIRAY.COM

2. @aalmiray

3. @aalmiray
JCP Executive Committee Associate Seat
Committer
Committer
JSR377 Specification Lead

4. @aalmiray
HTTP://SPOCKFRAMEWORK.ORG/
HTTPS://GITHUB.COM/SPOCKFRAMEWORK

5. @aalmiray
AGENDA
1. Conceptos Básicos
2. Parametrización
3. Mock/Stub/Spy
4. Extensiones

6. @aalmiray
CONCEPTOS
BASICOS

7. @aalmiray
CONCEPTOS BASICOS - JUNIT
public class SampleTest {
@Test public void simpleSpecificationExample() {
// given:
List<String> list = new ArrayList<>();
// when:
list.add("Groovy");
// then:
assertThat(list, contains("Groovy"));
}
}

8. @aalmiray
CONCEPTOS BASICOS - SPOCK
public class SampleSpec extends Specification {
public void simpleSpecificationExample() {
given:
List<String> list = new ArrayList<>();
when:
list.add("Groovy");
then:
assert list.contains("Groovy");
assert list.size() == 1;
}
}

9. @aalmiray
CONCEPTOS BASICOS - SPOCK
class SampleSpec extends Specification {
def "A simple Specification Example" () {
given:
List<String> list = []
when:
list << 'Groovy'
then:
list == ['Groovy']
}
}

10. @aalmiray
BLOQUES
given / setup
when
then
expect
where
and
cleanup

11. @aalmiray
FIXTURE METHODS
def setup() {…}
def cleanup() {…}
def setupSpec() {…}
def cleanupSpec() {…} Spock
-----------------------------------------------------
@Before public void setUp() {…} JUnit
@After public void tearDown() {…}
@BeforeClass public static void setUpTestCase() {…}
@AfterClass public static void tearDownTestCase() {…}

12. @aalmiray
PARAMETRIZACION

13. @aalmiray
PARAMETRIZACION
@Unroll
class HelloServiceSpecification extends Specification {
def "Invoking sayHello('#input') yields '#output'"() {
given:
HelloService service = new DefaultHelloService()
when:
String result = service.sayHello(input)
then:
result == output
where:
input << ['', 'Test']
output << ['Howdy stranger! ', 'Hello Test']
}
}

14. @aalmiray
PARAMETRIZACION
@Unroll
class HelloServiceSpecification extends Specification {
def "Invoking sayHello('#input') yields '#output'"() {
given:
HelloService service = new DefaultHelloService()
when:
String result = service.sayHello(input)
then:
result == output
where:
input | output
'' | 'Howdy stranger!'
'Test' | 'Hello Test'
}
}

15. @aalmiray
MOCK/STUB/SPY

16. @aalmiray
MOCK + INTERACCIONES
class SampleSpec extends Specification {
def "A mocking example"() {
given:
Collaborator collaborator = Mock()
1 * collaborator.foo() >> 'Spock'
Component component = new Component(collaborator)
when:
String output = component.doit('is Groovy!')
then:
output == 'Spock is Groovy!’
}
}

17. @aalmiray
CARDINALIDAD
1 * subscriber.receive("hello")
0 * subscriber.receive("hello")
(1..3) * subscriber.receive("hello")
(1.._) * subscriber.receive("hello")
(_..3) * subscriber.receive("hello")
_ * subscriber.receive("hello")

18. @aalmiray
TARGET Y METODO
1 * subscriber.receive("hello")
1 * _.receive("hello")
1 * subscriber._("hello")
1 * subscriber./r.*e/("hello") )
1 * _._("hello")

19. @aalmiray
ARGUMENTOS
1 * subscriber.receive("hello")
1 * subscriber.receive(!"hello")
1 * subscriber.receive()
1 * subscriber.receive(_)
1 * subscriber.receive(*_)
1 * subscriber.receive(!null)
1 * subscriber.receive(_ as String)
1 * subscriber.receive({ it.size() > 3 })

20. @aalmiray
ASCII ART?
(_.._) * _._(*_) >> _

21. @aalmiray
ASCII ART?
(_.._) * _._(*_) >> _
1 2 3 4 5
1. Cardinalidad 0 a infinito
2. Cualquier Mock/Stub/Spy
3. Cualquier método
4. 0 o más argumentos
5. Valor de retorno genérico

22. @aalmiray
EXTENSIONES

23. @aalmiray
IGNORAR METODOS
• @Ignore
• Ignora un solo método
• @IgnoreRest
• Ignora los demás métodos
• @IgnoreIf
• Ignora un método de manera condicional

24. @aalmiray
@IGNOREIF
class SampleSpec extends Specification {
@IgnoreIf({System.getBoolean("fast")})
def "A expensive data driven test" () {
given:
. . .
}
}

25. @aalmiray
@STEPWISE
@Stepwise
class BakeACakeSpec extends Specification {
def "Fetch ingredients" () { . . . }
def "Mix ingredients" () { . . . }
def "Decorate bake" () { . . . }
def "Bake it!" () { . . . }
def "Serve and enjoy" () { . . . }
}

26. @aalmiray
HTTP://ANDRESALMIRAY.COM/NEWSLETTER
HTTP://ANDRESALMIRAY.COM/EDITORIAL

27. @aalmiray

28. @aalmiray
http://www.jespanol.org

29. GRACIAS!
ANDRES ALMIRAY
@AALMIRAY
ANDRESALMIRAY.COM