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Presentation:

Issues in Testing Object Oriented Systemsby

James Gawn

Behrooz Nobakhtbnobakht@liacs.nl

LIACS

IntroductionMotivationTesting Types

Overview on Object-Oriented Paradigm

Issues on TestingTesting Levels in OO SystemsTesting Concerns in OO Systems

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Testing AchievementsGuaranteeIdentification

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Functional TestingBlack-box TestingInputs vs. Outputs

Structural TestingWhite-box TestingLevel of Code Coverage

Which one?

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Data AbstractionEncapsulationInheritancePolymorphism

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InterfaceImplementation

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Composite InheritanceMultiple Inheritance

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Static BindingDynamic Binding

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Complete an incomplete behaviorSpecialize previous (upper) behavior

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Method TestingClass TestingIntegration TestingSystem Testing

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Method Functional SpecificationMethods' DependencyStubs

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Object Instantiation TestingMethods as a wholeIntra-class Testing: Method InteractionOther classesStubs

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Class Communication Concerns: FaultsInter-class Testing: Class InteractionStrategies:

Big BangBottom UpTop Down

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Program as a wholeSpecifications of the programFunctional Testing Criteria

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Access Control ChallengesRisks in Changing Object States

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Actual Features in Class HierarchyTesting Hierarchy: Re-testability, Re-usability, Testing Axioms: Anti-extensionality, Anti-decomposition, Anti-compositionClass Flattening

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Shape

Circle Rectangle

Square

Triangle

Safety Testing Goals:Complete Branch CoverageDynamically-Bound MethodsExternal Polymorphic Objects

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Automation: Test Case Extraction, Test Case Generation, Test Suite Framework, Test OraclesAlgorithms: Method Call Sequence Generation: Evolutionary AlgorithmsMethodology-oriented Testing

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Issues in Testing Object Orientated Systems, Gawn, James, 2007Automatic testing of object-oriented software, Bertrand Meyer, Ilinca Ciupa, Andreas Leitner, Lisa (Ling) LiuSoftware Testing Research: Achievements, Achievements, Dreams, Antonia BertolinoTIOBE Index:http://www.tiobe.com/index.php/content/paperinfo/tpci/index.html

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