Struct SerialCargoEnv 

pub struct SerialCargoEnv<'a> { /* private fields */ }

RAII helper that serializes and scopes mutations of CARGO_* environment variables.

Tests that simulate different crate layouts frequently need to tweak CARGO_MANIFEST_DIR and CARGO_PRIMARY_PACKAGE. Those environment variables are global, so concurrent mutations can introduce racy failures. SerialCargoEnv acquires a process-wide mutex before mutating the variables, remembers the previous values, and restores them when dropped so each test can safely run in isolation.

Implementations

impl<'a> SerialCargoEnv<'a>

pub fn new(manifest_dir: &GuardedPath, primary: bool) -> Self

Acquire the guard and set the cargo environment to point at manifest_dir.

primary controls whether CARGO_PRIMARY_PACKAGE is set to "1" or "0". The previous values are restored automatically when the guard drops.

Trait Implementations

impl Drop for SerialCargoEnv<'_>

fn drop(&mut self)

Executes the destructor for this type.