assertables

Macro assert_program_args_stdout_lt_expr

source 
macro_rules! assert_program_args_stdout_lt_expr {
    ($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) stdout string is less than an expression.

Pseudocode:
(program1 + args1 ⇒ command ⇒ stdout) < (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-stdout";
let args = ["%s", "alfa"];
let bytes = vec![b'z', b'z'];
assert_program_args_stdout_lt_expr!(&program, &args, &bytes);

// This will panic
let program = "bin/printf-stdout";
let args = ["%s", "alfa"];
let bytes = vec![b'a', b'a'];
assert_program_args_stdout_lt_expr!(&program, &args, &bytes);
// assertion failed: `assert_program_args_stdout_lt_expr!(a_program, a_args, b_expr)`
// https://docs.rs/assertables/8.18.0/assertables/macro.assert_program_args_stdout_lt_expr.html
//  a_program label: `&program`,
//  a_program debug: `\"bin/printf-stdout\"`,
//     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