Java Testing With Spock - Ken Sipe (Trexin Consulting)
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NFJS Software Symposium Series 2013 Ken Sipe Spock - The Logical Enterprise Testing Tool
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The Spock unit testing framework is on the verge of a 1.0 release and has already proven itself to be the next generation thinking on how to test Java production code. One of the many ever present challenges to testing code is the ability to Mock classes which has simplified by Spock from a very early release. Recently added to Spock is the notion of Stubs and Spies. This sessions is designed to demonstrate proper unit testing technique showing off these new features along with a number of advanced Spock features.
Transcript of Java Testing With Spock - Ken Sipe (Trexin Consulting)
NFJS Software Symposium Series 2013
Ken Sipe
Spock - The Logical Enterprise Testing Tool
Spock TestingAbout Speaker
Developer: Embedded, C++, Java, Groovy, Grails, C#, Objective CSpeaker: JavaOne 2009 Rock Star, NFJS, JAXMicrosoft MCPSun Certified Java 2 ArchitectMaster of Scrums Agile CoachInstructor: VisiBroker CORBA
Rational Rose, OOAD
http://kensipe.blogspot.com/http://del.icio.us/kensipetwitter: @[email protected]
Spock TestingAgenda
nTestingnIntroduction to SpocknMocking
Spock Testing
Spock Intro
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Spock Testing
ntesting framework...
nbased on Groovy
nfully compatible with JUnit
nresult of learnings from¨RSpec, BDD, JUnit
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Spock is...
Spock TestingSpock Can...
nReduces lines of code
nMake tests more readable
nBe extended
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Spock Testing
JUnit
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Spock TestingTaxonomy of JUnit
Spock Testing
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JUnit Pain Points?
Spock TestingUnit testing needs
nConcise, Clear and ReadablenPromote “user” thinking
¨context¨stimulus¨expectations
nProductivity
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Spock Testing
Groovy
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Spock TestingTaxonomy of GroovyTestCase
Spock TestingGroovy and Testing
Spock TestingGroovy Power Assert
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25.0 | | 20.0 100 4 | com.math.SimpleInterestCalculator@606e1dec
false
Spock TestingGroovy Improvements
nConcise, Clear and ReadablenPromote “user” thinking
¨context¨stimulus¨expectations
nProductivity
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Spock Testing
Spock
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Spock TestingSpock
nProgrammers Environment¨Groovy
nPromotes Clarity¨structural blocks¨removes noise
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Spock TestingWhy use Spock?
nExpressive testing languagenEasy to learnnUsable from unit to end-to-endnLeverages GroovynRuns with JUnit Runner
¨IDE¨CI
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Spock Testing
Taxonomy of a Spec
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Spock TestingFirst Spec
Spock TestingTerms
nSpecification¨compare to TestCase or GroovyTestCase¨Instructs JUnit to run with Sputnik (JUnit runner)
nFields¨initialized for each “test”¨think “setup”¨not shared between feature methods
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Spock TestingMore Fields
nShared¨Setup once¨think setupSpec()
nstatics¨only use for constants
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Spock TestingFixture Methods
nbefore / after a featurenbefore / after a specnoptional
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Spock TestingFeature Methods
n“heart” of specnfour phases
¨setup the features fixture¨provide stimulus to system¨describes the response¨clean up
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Spock TestingBlocks
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given: preconditions, data fixtures
when: actions that trigger some outcomethen: 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
Spock TestingCommon Blocks
nWhen / Then / WherenGiven / When / Then
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Spock TestingBlocks
nsetup
¨must be first¨must be the only¨no special semantics¨label is optional¨label given: is an alias
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Spock TestingWhen / Then Blocks
n used together¨possible to have many per feature
n then restrictions¨conditions¨exception conditions¨automatic asserts¨interactions¨variable defs
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Spock TestingConditions
nchecking for exceptions
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Spock TestingThrowing an Exception NOT!
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Spock TestingMocks and Expectations
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Spock TestingCleanup on Feature X
ncleanup block¨only followed by a where block¨no repeats
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Spock TestingWhere Blocks
¨last in a method¨no repeats¨used for data-driven features
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Spock TestingHelper Methods
¨either return a booleannor
¨assert34
Spock Testing
Specification Functionsand Spock.lang.*
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Spock Testing
nold()nthrown() / notThrownnwith {}
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Spock TestingSpock.lang.* Documentation
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@Title@Narrative @Issue@See@Subject
Spock TestingSpock.lang.* Ignoring Stuff
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@Requires @IgnoreIf@Ignore@IgnoreRest
Spock TestingReporting
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@Unroll
Spock TestingBuilt-in Extensions: AutoCleanup
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@AutoCleanup@AutoCleanup(‘dispose’)@AutoCleanup(quite=true)
Spock TestingBuilt-in Extensions: Timeout
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@Timeout@Timeout(10)@Timeout(value=10, unit=TimeUnit.MILLISECONDS)
Spock TestingBuilt-in Extensions: Stepwise
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@Stepwise
Spock Testing
Hamcrest
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Spock Testing
JUnit Rules
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Spock Testing
SpockConfig
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Spock TestingReferences
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nGetting Spock¨http://code.google.com/p/spock/
nSource from Presentation¨https://github.com/kensipe/spock-demos-nfjs
Spock Testing
n Closing and Q&A
¨Please fill out the session evaluation¨Ken Sipe
n [email protected] kensipe.blogspot.comn twitter: @kensipe
Summary
