Struct MutationConfig 

pub struct MutationConfig {
    pub runner: MutationRunner,
    pub operators: Option<Vec<MutationOperatorName>>,
    pub min_score: Option<f64>,
    pub concurrency: Option<usize>,
    pub typecheck: Option<bool>,
}

Project settings for fallow mutation.

Project config cannot widen what a run executes: the override that keeps mutants near file system, process, network or database sinks is a CLI flag only (--allow-side-effects), and no key starts a run.

Fields

runner: MutationRunner

The test runner: auto, vitest, node-test or bun-test. auto detects it from the project.

operators: Option<Vec<MutationOperatorName>>

The operators to use. Unset uses each operator. --operators wins.

min_score: Option<f64>

The minimum mutation score, from 0 to 100. When the score of a run is lower, fallow mutation exits with code 1. Unset never fails a run. --min-score wins.

concurrency: Option<usize>

The number of companion processes. Unset uses half the logical cores. --concurrency wins.

typecheck: Option<bool>

Type-check each survived mutant through the TypeScript-Go companion of --type-aware. A survivor that does not type-check becomes compile_error and does not count in the score. Unset or false checks no survivor. --typecheck turns the check on.

Implementations

impl MutationConfig

pub fn is_default(&self) -> bool

True when no key is set.

Trait Implementations

impl Clone for MutationConfig

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MutationConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MutationConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MutationConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for MutationConfig

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for MutationConfig

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for MutationConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for MutationConfig