assertables

Macro assert_io_read_to_string_is_match

Source 
macro_rules! assert_io_read_to_string_is_match {
    ($a_reader:expr, $b_matcher:expr $(,)?) => { ... };
    ($a_reader:expr, $b_matcher:expr, $($message:tt)+) => { ... };
}
Expand description

Assert a ::std::io::Read read_to_string() is a match to a regex.

Pseudocode:
(reader.read_to_string(a_string) ⇒ a_string) matches matcher

  • If true, return (a_string, b_string).

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

§Examples

use assertables::*;
use std::io::Read;
use regex::Regex;

let mut reader = "hello".as_bytes();
let matcher = Regex::new(r"ell").expect("regex");
assert_io_read_to_string_is_match!(reader, &matcher);

// This will panic
let mut reader = "hello".as_bytes();
let matcher = Regex::new(r"zz").expect("regex");
assert_io_read_to_string_is_match!(reader, &matcher);
// assertion failed: `assert_io_read_to_string_is_match!(a_reader, &matcher)`
// https://docs.rs/assertables/9.5.3/assertables/macro.assert_io_read_to_string_is_match.html
//   reader label: `reader`,
//   reader debug: `[]`,
//  matcher label: `&matcher`,
//  matcher debug: `Regex(\"zz\")`,
//    reader size: `5`
//  reader string: `\"hello\"`

§Module macros