Module assert_cmd::cargo

Expand description

Simplify running bins in a Cargo project.

CommandCargoExt is an extension trait for Command to easily launch a crate’s binaries.

Examples

Simple case:

use assert_cmd::prelude::*;

use std::process::Command;

let mut cmd = Command::main_binary()
    .unwrap();
let output = cmd.unwrap();

Further customizations

There are times when you might want to drop down to the underlying API, escargot:

Specifying feature flags
Workaround the per-call cargo overhead by caching the binary location with lazy_static.
If not using --target <TRIPLET>, bypass the first call overhead by not passing current_target() to escargot.

extern crate assert_cmd;
extern crate escargot;

use assert_cmd::prelude::*;
use escargot;

use std::process::Command;

let bin_under_test = escargot::CargoBuild::new()
    .bin("bin_fixture")
    .current_release()
    .current_target()
    .run()
    .unwrap();
let mut cmd = bin_under_test.command();
let output = cmd.unwrap();

Structs

CargoError

Error when finding crate binary.

Traits

CommandCargoExt

Create a Command for a bin in the Cargo project.