Trait OutputWithName

Source

pub trait OutputWithName {
    // Required method
    fn named(self, s: impl AsRef<str>) -> NamedOutput;
}

Expand description

Extension trait for Output to generate NamedOutput

The primary use case is exercising a function that takes NamedOutput in its arguments in a test.

§Examples

use fun_run::OutputWithName;

let output = std::process::Output {
    status: std::process::ExitStatus::default(),
    stdout: Vec::new(),
    stderr: Vec::new()
};

let named: fun_run::NamedOutput = output.named("exit 0");
assert_eq!(String::from("exit 0"), named.name());

For generating an Output with a non-zero status on Unix you can use ExitStatusFromCode::from_code, which builds the ExitStatus from a plain exit code without you having to bit-shift the raw wait status yourself:

use fun_run::{OutputWithName, ExitStatusFromCode};

let output = std::process::Output {
    status: std::process::ExitStatus::from_code(42),
    stdout: Vec::new(),
    stderr: Vec::new()
};

assert_eq!(42, output.status.code().unwrap());

let named: fun_run::NamedOutput = output.named("exit 42");
let result = named.nonzero_captured();
assert!(result.is_err());