Struct ShardConfig 

pub struct ShardConfig {
    pub current: u32,
    pub total: u32,
}

Shard configuration for distributed test execution

Fields

current: u32

Current shard index (1-based)

total: u32

Total number of shards

Implementations

impl ShardConfig

pub fn new(current: u32, total: u32) -> Self

Create a new shard configuration

Panics

Panics if current is 0, greater than total, or total is 0.

pub fn parse(s: &str) -> Result<Self, ShardParseError>

Parse shard config from CLI string format “N/M”

Errors

Returns error if format is invalid

pub fn should_run_index(&self, test_index: usize) -> bool

Check if a test at given index should run on this shard

Uses modulo distribution for even test distribution.

pub fn should_run_name(&self, test_name: &str) -> bool

Check if a test with given name should run on this shard

Uses deterministic hash-based distribution for stable assignment.

pub fn filter_tests<'a>(&self, tests: &'a [&str]) -> Vec<&'a str>

Filter a list of tests to only those that should run on this shard

pub fn filter_by_index<T: Clone>(&self, items: &[T]) -> Vec<T>

Filter tests by index

pub fn estimated_count(&self, total_tests: usize) -> usize

Get estimated test count for this shard

pub fn validate_coverage(total_tests: usize, total_shards: u32) -> bool

Validate that all shards together cover all tests exactly once

Trait Implementations

impl Clone for ShardConfig

fn clone(&self) -> ShardConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ShardConfig

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

Formats the value using the given formatter.

impl Default for ShardConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ShardConfig

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ShardConfig

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

Formats the value using the given formatter.

impl PartialEq for ShardConfig

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ShardConfig

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for ShardConfig

impl Eq for ShardConfig

impl StructuralPartialEq for ShardConfig