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SLE 2019
Sun 20 - Fri 25 October 2019 Athens, Greece
co-located with SPLASH 2019
Mon 21 Oct 2019 16:30 - 16:50 at Templars - Session 4: Parsing Chair(s): Adrian Johnstone

Grammar-based test case generation has focused almost exclusively on generating syntactically correct programs (i.e., positive tests) from a reference grammar but a positive reference test suite cannot detect when the unit under test accepts words outside the language (i.e., false positives). Here, we investigate the converse problem and describe two mutation-based approaches for generating programs with guaranteed syntax errors (i.e., negative tests). Word mutation systematically modifies positive tests by deleting, inserting, substituting, and transposing tokens in such a way that at least one impossible token pair emerges. Rule mutation applies such operations to the symbols of the right-hand sides of productions in such a way that each derivation that uses the mutated rule yields a word outside the language.

Mon 21 Oct
Times are displayed in time zone: Beirut change

16:00 - 17:30: Session 4: ParsingSLE 2019 at Templars
Chair(s): Adrian JohnstoneRoyal Holloway, University of London
16:00 - 16:30
Multiple Lexicalisation - A Java Based Study
SLE 2019
Elizabeth ScottRoyal Holloway University of London, Adrian JohnstoneRoyal Holloway, University of London
16:30 - 16:50
Breaking Parsers: Mutation-based Generation of Programs with Guaranteed Syntax ErrorsNEW IDEABest Paper
SLE 2019
Moeketsi RaselimoStellenbosch University, Jan TaljaardStellenbosch University, Bernd FischerStellenbosch University
16:50 - 17:20
Default disambiguation for online parsers
SLE 2019
Lukas DiekmannKing's College London, Laurence TrattKing's College London
DOI Pre-print