Expand description

Assert a command (built with program and args) stderr string is equal to another.

§Example

let a_program = "bin/printf-stderr";
let a_args = ["%s", "hello"];
let b_program = "bin/printf-stderr";
let b_args = ["%s", "hello"];
assert_program_args_stderr_eq!(&a_program, &a_args, &b_program, &b_args);

/// # Module macros