Test generation through programming in UDITA

Milos Gligoric, Tihomir Gvero, Vilas Jagannath, Sarfraz Khurshid, Viktor Kuncak, Darko Marinov

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We present an approach for describing tests using non-deterministic test generation programs. To write such programs, we introduce UDITA, a Java-based language with non-deterministic choice operators and an interface for generating linked structures. We also describe new algorithms that generate concrete tests by efficiently exploring the space of all executions of non-deterministic UDITA programs. We implemented our approach and incorporated it into the official, publicly available repository of Java PathFinder (JPF), a popular tool for verifying Java programs. We evaluate our technique by generating tests for data structures, refactoring engines, and JPF itself. Our experiments show that test generation using UDITA is faster and leads to test descriptions that are easier to write than in previous frameworks. Moreover, the novel execution mechanism of UDITA is essential for making test generation feasible. Using UDITA, we have discovered a number of bugs in Eclipse, NetBeans, Sun javac, and JPF.

Original languageEnglish (US)
Title of host publicationICSE 2010 - Proceedings of the 32nd ACM/IEEE International Conference on Software Engineering
Number of pages10
StatePublished - 2010
Event32nd ACM/IEEE International Conference on Software Engineering, ICSE 2010 - Cape Town, South Africa
Duration: May 1 2010May 8 2010

Publication series

NameProceedings - International Conference on Software Engineering
ISSN (Print)0270-5257


Other32nd ACM/IEEE International Conference on Software Engineering, ICSE 2010
Country/TerritorySouth Africa
CityCape Town


  • Java PathFinder
  • Pex
  • automated testing
  • test filtering
  • test generation
  • test predicates
  • test programs

ASJC Scopus subject areas

  • Software


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