ECOOP 2018
Sun 15 - Sat 21 July 2018 Amsterdam, Netherlands
co-located with ECOOP and ISSTA 2018
Fri 20 Jul 2018 11:30 - 12:00 at Berlin - Morning Session Chair(s): Chris Laffra

Unit tests are labor-intensive to write and maintain. In this talk we look into how well unit tests for a target software package can be extracted from the execution traces of client code. Our objective is to reduce the effort involved in creating test suites while minimizing the number and size of individual tests, and maximizing coverage. To evaluate the viability of our approach, we have chosen R, a programming language that is popular for data science applications. The challenges presented by R are its extreme dynamism, coerciveness, and lack of types. This combination decrease the efficacy of traditional test extraction techniques. We present Genthat, a tool developed over the last couple of years to non-invasively record execution traces of R programs and extract unit tests from those traces. We have carried out an evaluation on 1,545 packages comprising 1.7M lines of code. The tests extracted by Genthat improved code coverage from original 19% to 53%. The running time of the generated tests is 1.9 times faster than the code they came from.

Fri 20 Jul

Displayed time zone: Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna change

11:00 - 12:30
Morning SessionISAGT at Berlin
Chair(s): Chris Laffra Uber Technologies
11:00
5m
Day opening
Welcome
ISAGT
Chris Laffra Uber Technologies
11:05
25m
Talk
Automatic Python test generation
ISAGT
Chris Laffra Uber Technologies
11:30
30m
Talk
Extracting tests from runtime behavior for R
ISAGT
Filip Křikava Czech Technical University
12:00
30m
Talk
Computer-aided unit-test generation with UTA
ISAGT