muttest: Run a mutation test

In muttest: Mutation Testing

Run a mutation test

Description

Run a mutation test

Usage

muttest(
  plan,
  path = "tests/testthat",
  reporter = default_reporter(),
  test_strategy = default_test_strategy(),
  copy_strategy = default_copy_strategy(),
  workers = 1,
  timeout = 600 * 1000
)

Arguments

plan	A mutation testing plan. See muttest_plan().
path	Path to the test directory.
reporter	Reporter to use for mutation testing results. See MutationReporter.
test_strategy	Strategy for running tests. See TestStrategy. The purpose of test strategy is to control how tests are executed. We can run all tests for each mutant, or only tests that are relevant to the mutant.
copy_strategy	Strategy for copying the project. See CopyStrategy. This strategy controls which files are copied to the temporary directory, where the tests are run.
workers	Number of parallel workers. When greater than 1, mutants are tested concurrently using mirai daemons. Defaults to 1 (sequential).
timeout	Per-mutant timeout in milliseconds. If a mutant's test run exceeds this limit the daemon is interrupted and the result is recorded as an error. Use Inf to disable. Defaults to 600000 (10 minutes).

Value

An object of class muttest_result containing the overall mutation score.

muttest documentation built on July 21, 2026, 5:09 p.m.