assert_program_args_stderr_lt_x

assertables

Macro assert_program_args_stderr_lt_x 

Source 
macro_rules! assert_program_args_stderr_lt_x {
    ($a_program:expr, $a_args:expr, $b_expr:expr $(,)?) => { ... };
    ($a_program:expr, $a_args:expr, $b_expr:expr, $($message:tt)+) => { ... };
}
Expand description

Assert a command (built with program and args) stderr is less than an expression.

Pseudocode:
(a_program + a_args ⇒ command ⇒ stderr) < (expr into string)

  • If true, return ().

  • Otherwise, call panic! with a message and the values of the expressions with their debug representations.

§Examples

use assertables::*;

let program = "bin/printf-stderr";
let args = ["%s", "alfa"];
let bytes = vec![b'z', b'z'];
assert_program_args_stderr_lt_x!(program, args, bytes);

// This will panic
let program = "bin/printf-stderr";
let a_args = ["%s", "alfa"];
let bytes = vec![b'a', b'a'];
assert_program_args_stderr_lt_x!(program, args, bytes);
// assertion failed: `assert_program_args_stderr_lt_x!(a_program, a_args, b_expr)`
// https://docs.rs/assertables/…/assertables/macro.assert_program_args_stderr_lt_x.html
//  a_program label: `program`,
//  a_program debug: `\"bin/printf-stderr\"`,
//     a_args label: `args`,
//     a_args debug: `[\"%s\", \"alfa\"]`,
//     b_expr label: `bytes`,
//     b_expr debug: `[97, 97]`,
//                a: `[97, 108, 102, 97]`,
//                b: `[97, 97]`

§Module macros