Struct MapEnv 

pub struct MapEnv { /* private fields */ }

In-memory Env for tests. Keys absent from the map return None; empty-string values round-trip as Some("") to match SystemEnv.

Construct with MapEnv::new (empty) or MapEnv::default, then chain MapEnv::with to insert keys.

Implementations

impl MapEnv

pub fn new() -> Self

Returns a new empty MapEnv. Equivalent to MapEnv::default.

pub fn with<K, V>(self, key: K, value: V) -> Self

where K: Into<String>, V: Into<String>,

Inserts key → value, returning self so calls chain.

Trait Implementations

impl Clone for MapEnv

fn clone(&self) -> MapEnv

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MapEnv

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

Formats the value using the given formatter.

impl Default for MapEnv

fn default() -> MapEnv

Returns the “default value” for a type.

impl Env for MapEnv

fn get(&self, key: &str) -> Option<String>

Returns the raw value for key, or None if unset.