1. NFJS Software Symposium Series 2013
Spock - The Logical Enterprise
Testing Tool
Ken Sipe

2. About Speaker
Spock Testing
http://kensipe.blogspot.com/
http://del.icio.us/kensipe
twitter: @kensipe
ken.sipe@gmail.com
Developer: Embedded, C++, Java, Groovy, Grails, C#, Objective C
Speaker: JavaOne 2009 Rock Star, NFJS, JAX
Microsoft MCP
Sun Certified Java 2 Architect
Master of Scrums
Agile Coach
Instructor: VisiBroker CORBA
Rational Rose, OOAD

3. Agenda
Spock Testing
n Testing
n Introduction
n Mocking
to Spock

4. Spock Testing
Spock Intro
4

5. Spock is...
n testing
framework...
n based
Spock Testing
on Groovy
n fully
compatible with JUnit
n result
of learnings from
¨RSpec,
BDD, JUnit
5

6. Spock Can...
n Reduces
n Make
n Be
Spock Testing
lines of code
tests more readable
extended
6

7. Spock Testing
JUnit
7

8. Taxonomy of JUnit
Spock Testing

9. Spock Testing
JUnit Pain Points?
9

10. Unit testing needs
Spock Testing
n Concise,
Clear and Readable
n Promote “user” thinking
¨context
¨stimulus
¨expectations
n Productivity
10

11. Spock Testing
Groovy
11

12. Taxonomy of GroovyTestCase
Spock Testing

13. Groovy and Testing
Spock Testing

14. Groovy Power Assert
Condition not satisfied:
interest == calc.calculate(amt, year)
|
| |
|
| |
25.0 | |
20.0 100 4
| com.math.SimpleInterestCalculator@606e1dec
false
Spock Testing

15. Groovy Improvements
Spock Testing
n Concise,
Clear and Readable
n Promote “user” thinking
¨context
¨stimulus
¨expectations
n Productivity
15

16. Spock Testing
Spock
16

17. Spock
Spock Testing
n Programmers
Environment
¨Groovy
n Promotes
Clarity
¨structural
blocks
¨removes noise
17

18. Why use Spock?
Spock Testing
n Expressive
testing language
n Easy to learn
n Usable from unit to end-to-end
n Leverages Groovy
n Runs with JUnit Runner
¨IDE
¨CI
18

19. Spock Testing
Taxonomy of a Spec
19

20. First Spec
Spock Testing

21. Terms
Spock Testing
n Specification
¨compare
to TestCase or GroovyTestCase
¨Instructs JUnit to run with Sputnik (JUnit runner)
n Fields
¨initialized
for each “test”
¨think “setup”
¨not shared between feature methods
21

22. More Fields
Spock Testing
n Shared
¨Setup
once
¨think setupSpec()
n statics
¨only
use for constants
22

23. Fixture Methods
Spock Testing
n before
/ after a feature
n before / after a spec
n optional
23

24. Feature Methods
Spock Testing
n “heart”
of spec
n four phases
¨setup
the features fixture
¨provide stimulus to system
¨describes the response
¨clean up
24

25. Blocks
Spock Testing
given:
preconditions, data fixtures
when:
actions that trigger some outcome
then:
makes assertions about outcome
expect: short alt to when & then
where:
applies varied inputs
and:
sub-divides other blocks
setup:
alias for given
cleanup: post-conditions, housekeeping
25

26. Common Blocks
Spock Testing
n When
/ Then / Where
n Given / When / Then
26

27. Blocks
Spock Testing
n setup
¨must
be first
¨must be the only
¨no special semantics
¨label is optional
¨label given: is an alias
27

28. When / Then Blocks
n used
together
¨ possible
n then
Spock Testing
to have many per feature
restrictions
¨ conditions
¨ exception
conditions
¨ automatic asserts
¨ interactions
¨ variable defs
28

29. Conditions
n checking
Spock Testing
for exceptions
29

30. Throwing an Exception NOT!
Spock Testing
30

31. Mocks and Expectations
Spock Testing
31

32. Cleanup on Feature X
n cleanup
Spock Testing
block
¨only
followed by a where block
¨no repeats
32

33. Where Blocks
Spock Testing
¨last
in a method
¨no repeats
¨used for data-driven features
33

34. Helper Methods
¨either
Spock Testing
return a boolean
n or
¨assert
34

35. Spock Testing
Specification Functions
and Spock.lang.*
35

36. Spock Testing
n old()
n thrown()
n with
/ notThrown
{}
36

37. Spock.lang.* Documentation
Spock Testing
@Title
@Narrative
@Issue
@See
@Subject
37

38. Spock.lang.* Ignoring Stuff
Spock Testing
@Requires
@IgnoreIf
@Ignore
@IgnoreRest
38

39. Reporting
Spock Testing
@Unroll
39

40. Built-in Extensions: AutoCleanup
Spock Testing
@AutoCleanup
@AutoCleanup(‘dispose’)
@AutoCleanup(quite=true)
40

41. Built-in Extensions: Timeout
Spock Testing
@Timeout
@Timeout(10)
@Timeout(value=10,
unit=TimeUnit.MILLISECONDS)
41

42. Built-in Extensions: Stepwise
Spock Testing
@Stepwise
42

43. Spock Testing
Hamcrest
43

44. Spock Testing
JUnit Rules
44

45. Spock Testing
SpockConfig
45

46. References
n Getting
Spock Testing
Spock
¨http://code.google.com/p/spock/
n Source
from Presentation
¨https://github.com/kensipe/spock-demos-nfjs
46

47. Summary
n
Closing and Q&A
¨ Please
fill out the session evaluation
¨ Ken Sipe
ken.sipe@gmail.com
n kensipe.blogspot.com
n twitter: @kensipe
n
Spock Testing