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pt/members/libpt-core/src/macros.rs

59 lines
2.3 KiB
Rust

//! # common macros for `libpt`
//!
//! This module implements macros for use with `libpt`.
//// ATTRIBUTES ////////////////////////////////////////////////////////////////////////////////////
// we want docs
#![warn(missing_docs)]
#![warn(rustdoc::missing_crate_level_docs)]
////////////////////////////////////////////////////////////////////////////////////////////////////
// we want Debug everywhere.
#![warn(missing_debug_implementations)]
////////////////////////////////////////////////////////////////////////////////////////////////////
// enable clippy's extra lints, the pedantic version
#![warn(clippy::pedantic)]
//// IMPORTS ///////////////////////////////////////////////////////////////////////////////////////
pub use crate::get_stdout_for;
//// CONSTANTS /////////////////////////////////////////////////////////////////////////////////////
//// STATICS ///////////////////////////////////////////////////////////////////////////////////////
//// MACROS ////////////////////////////////////////////////////////////////////////////////////////
/// ## catches what the expression would write to the `stdout`
///
/// This macro takes an expression, executes it, and catches what it would write to the stdout.
/// The buffer of the stdout will then be returned for further use.
///
/// This is especially useful when testing loggers or other frontend CLI functions.
///
/// Inspiration: [users.rust-lang.org](https://users.rust-lang.org/t/how-to-test-functions-that-use-println/67188/5)
#[macro_export]
macro_rules! get_stdout_for {
($test:expr) => {{
use gag::BufferRedirect;
use std::io::Read;
let mut buf = BufferRedirect::stdout().unwrap();
$test;
let mut output = String::new();
buf.read_to_string(&mut output).unwrap();
drop(buf);
output
}};
}
//// ENUMS /////////////////////////////////////////////////////////////////////////////////////////
//// STRUCTS ///////////////////////////////////////////////////////////////////////////////////////
//// IMPLEMENTATION ////////////////////////////////////////////////////////////////////////////////
//// PUBLIC FUNCTIONS //////////////////////////////////////////////////////////////////////////////
//// PRIVATE FUNCTIONS /////////////////////////////////////////////////////////////////////////////