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SPLASH 2017
Sun 22 - Fri 27 October 2017 Vancouver, Canada
Thu 26 Oct 2017 16:59 - 17:22 at Regency A - Testing Chair(s): Christian Hammer

TypeScript applications often use untyped JavaScript libraries. To support static type checking of such applications, the typed APIs of the libraries are expressed as separate declaration files. This raises the challenge of checking that the declaration files are correct with respect to the library implementations. Previous work has shown that mismatches are frequent and cause TypeScript's type checker to misguide the programmers by rejecting correct applications and accepting incorrect ones.

This paper shows how feedback-directed random testing, which is an automated testing technique that has mostly been used for testing Java libraries, can be adapted to effectively detect such type mismatches. Given a JavaScript library with a TypeScript declaration file, our tool TSTEST generates a "type test script", which is an application that interacts with the library and tests that it behaves according to the type declarations.
Compared to alternative solutions that involve static analysis, this approach finds significantly more mismatches in a large collection of real-world JavaScript libraries with TypeScript declaration files, and with fewer false positives. It also has the advantage that reported mismatches are easily reproducible with concrete executions, which aids diagnosis and debugging.

Thu 26 Oct

Displayed time zone: Tijuana, Baja California change

15:30 - 17:22
TestingOOPSLA at Regency A
Chair(s): Christian Hammer University of Potsdam
15:30
22m
Talk
A Solver-Aided Language for Test Input Generation
OOPSLA
Talia Ringer University of Washington, Dan Grossman University of Washington, Daniel Schwartz-Narbonne Amazon, n.n., Serdar Tasiran Amazon, n.n.
DOI
15:52
22m
Talk
Automated Testing of Graphics Shader Compilers
OOPSLA
Alastair F. Donaldson Imperial College London, Hugues Evrard Imperial College London, UK, Andrei Lascu Imperial College London, Paul Thomson Imperial College London
DOI
16:14
22m
Talk
Bounded Exhaustive Test-Input Generation on GPUs
OOPSLA
Ahmet Celik University of Texas at Austin, USA, Sreepathi Pai University of Rochester, Sarfraz Khurshid University of Texas at Austin, Milos Gligoric University of Texas at Austin
DOI
16:37
22m
Talk
Transforming Programs and Tests in Tandem for Fault Localization
OOPSLA
Xia Li University of Texas at Dallas, USA, Lingming Zhang
DOI
16:59
22m
Talk
Type Test Scripts for TypeScript Testing
OOPSLA
Erik Krogh Kristensen Aarhus University, Denmark, Anders Møller Aarhus University
DOI