spock extensions anatomy
Post on 22-Apr-2015
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Goldin Evgeny
TeamCity and YouTrack Evangelist
Groovy practitioner
GroovyMag writer
Blogger
Open-‐Source developer
@evgeny_goldin2
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Agenda
Agenda
Why extending Spock?
Global and annotation-‐driven extensions
Interceptors and Listeners
Demos and examples
Cookbook and gotchas
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Why?
Why Extending Spock?
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Integrate - @Rule, @Autowired
Why Extending Spock?
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Integrate - @Rule, @Autowired
Helper fields - @TestDir, @TempDir
Why Extending Spock?
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Integrate - @Rule, @Autowired
Helper fields - @TestDir, @TempDir
Control - @Ignore, @FailsWith
Why Extending Spock?
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Integrate - @Rule, @Autowired
Helper fields - @TestDir, @TempDir
Control - @Ignore, @FailsWith
Report - @Unroll, ProfilerExtension
Spock Dictionary
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Spock Dictionary
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specification
Spock Dictionary
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fixture methods
Spock Dictionary
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fields
Spock Dictionary
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feature methods
Spock Dictionary
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iterations
Extensions Dictionary
Global extensions
Annotation-‐driven extensions
Interceptors
Listeners
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Extensions Dictionary
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Global Annotation-‐DrivenIntercep
tors
Listen
ers
RuleExtension
OptimizeRunOrderExtension
@Timeout
@Stepwise
Extensions Dictionary
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Global Annotation-‐DrivenIntercep
tors
Listen
ers
RuleExtension
OptimizeRunOrderExtension
@Timeout
@Stepwise
Global Extensions
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src/main/resources
src/test/resources
META-INF/services/org.spockframework.runtime.extension.IGlobalExtension
Global Extensions
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dependencies { ... testCompile 'com.github.goldin:spock-extensions:0.1.4'}
Or
dependencies { ... testRuntime 'com.github.goldin:spock-extensions:0.1.4'}
Global Extensions
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SpecInfo
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Read fields, feature and fixture methods
Add interceptors
Add listeners
Re-‐order, filter, sort, skip, exclude features
SpecInfo
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Read fields, feature and fixture methods
Add interceptors
Add listeners
Re-‐order, filter, sort, skip, exclude features
Profile
r
Extens
ion
Annotation Driven Extension
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Annotation Driven Extension
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Annotation Driven Extension
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Annotation Driven Extension
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Statele
ss
vs.
Statef
ul
Annotation Driven Extension
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@Ignor
e
@With
Listeners
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Added to spec
Before and after spec, feature, iteration
On error
Skipped spec or feature
Listen passively, do not throw exceptions
Get passed official test results
Interceptors
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Added to spec, feature or fixture methods
Intercept method invocation
invocation.proceed()
Can change test outcome and behavior
Can throw exceptions
But .. following interceptors can do the same
Interceptors
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Added to spec, feature or fixture methods
Intercept method invocation
invocation.proceed()
Can change test outcome and behavior
Can throw exceptions
But .. following interceptors can do the same
@Time
Gotchas
Use the right tool for the job
Attach interceptors only where they belong
Do not throw exceptions from listeners
Reuse listeners or interceptors with caution
Mark feature methods as skipped if needed
Skipped (skip a few) vs. excluded (run a few)32
Cookbook
Extend AbstractAnnotationDrivenExtension
Extend AbstractMethodInterceptor
Extend AbstractRunListener
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Fights Misplaced Annotation
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To Summarize ...
Why Extending Spock?
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Integrate - @Rule, @Autowired
Helper fields - @TestDir, @TempDir
Control - @Ignore, @FailsWith
Report - @Unroll, ProfilerExtension
Extensions Dictionary
Global extensions
Annotation-‐driven extensions
Interceptors
Listeners
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Extensions Project
github.com/evgeny-‐goldin/spock-‐extensions
@TestDir
@TempDir
@Time
@With
ProfilerExtension
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Additional Resources
github.com/spockframework/spock/
evgeny-‐goldin.org/javadoc/spock/
github.com/evgeny-‐goldin/spock-‐example
Blog post: Annotation Driven Extensions With Spock
GroovyMag December 2011: Extending Spock
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Q & A
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See you at Gr8Conf 2013!
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