custom_config.toml

# Example custom configuration file for cargo-mutants
# This file demonstrates how to use the --config option with a custom configuration file.
#
# Usage: cargo mutants --config example_custom_config.toml
#
# This allows you to have different configuration files for different scenarios,
# such as CI/CD pipelines, development, or specific testing requirements.

# Generate these error values from functions returning Result
error_values = [
    "anyhow::anyhow!(\"custom mutant error\")",
    "std::io::Error::new(std::io::ErrorKind::Other, \"mutant\")"
]

# Pass extra arguments to every cargo invocation
additional_cargo_args = ["--verbose"]

# Pass extra arguments to cargo test
additional_cargo_test_args = ["--nocapture", "--test-threads=1"]

# Activate all features during testing
all_features = true

# Build timeout multiplier (relative to baseline build time)
build_timeout_multiplier = 3.0

# Test timeout multiplier (relative to baseline test time)
timeout_multiplier = 2.0

# Minimum test timeout in seconds
minimum_test_timeout = 60.0

# Copy VCS directories (.git, etc.) to build directories
copy_vcs = true

# Examine only files matching these glob patterns
examine_globs = [
    "src/**/*.rs",
    "examples/**/*.rs"
]

# Exclude files matching these glob patterns
exclude_globs = [
    "src/test_*.rs",
    "src/**/test.rs",
    "tests/**/*.rs"
]

# Skip calls to these functions/methods
skip_calls = [
    "println!",
    "eprintln!",
    "debug!",
    "info!",
    "warn!",
    "error!",
    "trace!",
    "panic!",
    "unreachable!",
    "todo!",
    "unimplemented!"
]

# Use built-in defaults for skip_calls (includes "with_capacity")
skip_calls_defaults = true

# Choose test tool: "cargo" or "nextest"
test_tool = "cargo"

# Run tests from these specific packages for all mutants
test_package = ["my-core-package", "my-utils"]

# Alternatively, run tests from all packages in the workspace
# test_workspace = true

# Output directory for results
output = "custom_mutants_output"

# Cargo profile to use for builds
profile = "dev"

# Pass `--cap-lints` to rustc to avoid warnings causing build failures
cap_lints = true