eth-sri/tsb-mutants

TestSuiteBench Mutants

Mutants for TestSuiteBench, a benchmark of whether coding agents can write a test suite for a real CLI tool from its specification alone. A generated suite is scored by how many of these mutants it kills. The dataset holds 12,352 mutant executables across 165 tasks, with only the source files that differ from the ground truth stored.

Usage

See the GitHub repository for how to use this dataset.

Citation

@misc{egashira2026testsuitebench,
      title={TestSuiteBench: Coding Agents Struggle to Generate Strong Test Suites from Specifications},
      author={Kazuki Egashira and Niels Mündler-Sasahara and Mark Niklas Müller and Martin Vechev},
      year={2026},
      eprint={2610.13065},
      archivePrefix={arXiv},
      primaryClass={cs.SE},
      url={https://arxiv.org/abs/2610.13065},
}

The task instances are taken from ProgramBench. Please consider citing it as well:

@misc{yang2026programbench,
    title={ProgramBench: Can Language Models Rebuild Programs From Scratch?},
    author={John Yang and Kilian Lieret and Jeffrey Ma and Parth Thakkar and Dmitrii Pedchenko and Sten Sootla and Emily McMilin and Pengcheng Yin and Rui Hou and Gabriel Synnaeve and Diyi Yang and Ofir Press},
    year={2026},
    eprint={2605.03546},
    archivePrefix={arXiv},
    primaryClass={cs.SE},
    url={https://arxiv.org/abs/2605.03546},
}