Features

Note

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• Mull enables mutation testing of C and C++ projects.

• Mull expects a passing test suite to exit with 0. If the test suite fails, it must exit with a non-zero exit code. Any C/C++ test framework that follows this convention is supported by Mull.

• Supported Mutations.

• Generate results in various formats:

  • IDE Reporter: compiler-like warnings are printed to standard output

    • sample.cpp:15:11: warning: Killed: Replaced >= with < [cxx_ge_to_lt]

  • SQLite Reporter: SQLite database file.

  • JSON file that conforms mutation-testing-elements schema

  • Mutation Testing Elements HTML Reporter

• Parallelized execution of tests

• Incremental mutation testing. Working with mutations found in Git Diff changesets.

• Mull requires test programs to be compiled with Clang/LLVM. Mull supports all LLVM versions starting from LLVM 11 (older versions support older versions).

For a more detailed description of Mull’s architecture, see How Mull works.