Struct io_providers::SimulatedEnv

pub struct SimulatedEnv { /* fields omitted */ }

Provides inspection and manipulation of a simulated process environment.

Methods

impl SimulatedEnv

pub fn new() -> SimulatedEnv

Creates a new simulated environment.

pub fn set_args(&mut self, args: Vec<String>)

Sets the arguments which this program was started with (normally passed via the command line).

pub fn set_args_os(&mut self, args: Vec<OsString>)

Sets the arguments which this program was started with (normally passed via the command line).

pub fn set_current_exe<P: AsRef<Path>>(&mut self, path: P)

Sets the path to be returned by Env::current_exe().

pub fn set_home_dir<P: AsRef<Path>>(&mut self, path: Option<P>)

Sets the path to be returned by Env::home_dir().

pub fn set_temp_dir<P: AsRef<Path>>(&mut self, path: P)

Sets the path to be returned by Env::temp_dir().

Trait Implementations

impl Default for SimulatedEnv

fn default() -> SimulatedEnv

Returns the "default value" for a type.

impl Env for SimulatedEnv

type ArgsIter = IntoIter<String>

The iterator type returned by args().

type ArgsOsIter = IntoIter<OsString>

The iterator type returned by args_os().

type VarsIter = IntoIter<(String, String)>

The iterator type returned by vars().

type VarsOsIter = IntoIter<(OsString, OsString)>

The iterator type returned by vars_os().

fn args(&self) -> Self::ArgsIter

Returns the arguments which this program was started with (normally passed via the command line).

fn args_os(&self) -> Self::ArgsOsIter

Returns the arguments which this program was started with (normally passed via the command line).

fn current_dir(&self) -> Result<PathBuf>

Returns the current working directory as a PathBuf.

fn current_exe(&self) -> Result<PathBuf>

Returns the full filesystem path of the current running executable.

fn home_dir(&self) -> Option<PathBuf>

Deprecated since 0.2.0

: This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from crates.io/crates/dirs instead.

Returns the path of the current user's home directory if known.

fn remove_var<K: AsRef<OsStr>>(&mut self, k: K)

Removes an environment variable from the environment of the currently running process.

fn set_current_dir<P: AsRef<Path>>(&mut self, path: P) -> Result<()>

Changes the current working directory to the specified path, returning whether the change was completed successfully or not.

fn set_var<K: AsRef<OsStr>, V: AsRef<OsStr>>(&mut self, k: K, v: V)

Sets the environment variable k to the value v for the currently running process.

fn temp_dir(&self) -> PathBuf

Returns the path of a temporary directory.

fn var<K: AsRef<OsStr>>(&self, key: K) -> Result<String, VarError>

Fetches the environment variable key from the current process.

fn var_os<K: AsRef<OsStr>>(&self, key: K) -> Option<OsString>

Fetches the environment variable key from the current process.

fn vars(&self) -> Self::VarsIter

Returns an iterator of (variable, value) pairs of strings, for all the environment variables of the current process.

fn vars_os(&self) -> Self::VarsOsIter

Returns an iterator of (variable, value) pairs of OS strings, for all the environment variables of the current process.