Module assertables::assert_fs_read_to_string_contains

source ·
Expand description

Assert a std::fs::read_to_string() contains a pattern.

  • If true, return ().

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

§Examples

use std::io::Read;

// Return Ok
let path = "alfa.txt";
let containee = "alfa";
assert_fs_read_to_string_contains!(&path, containee);
//-> ()

// Panic with error message
let result = panic::catch_unwind(|| {
let path = "alfa.txt";
let containee = "zzz";
assert_fs_read_to_string_contains!(&path, containee);
//-> panic!
});
assert!(result.is_err());
let actual = result.unwrap_err().downcast::<String>().unwrap().to_string();
let expect = concat!(
    "assertion failed: `assert_fs_read_to_string_contains!(left_path, right_containee)`\n",
    "       left_path label: `&path`,\n",
    "       left_path debug: `\"alfa.txt\"`,\n",
    " right_containee label: `containee`,\n",
    " right_containee debug: `\"zzz\"`,\n",
    "                  left: `\"alfa\\n\"`,\n",
    "                 right: `\"zzz\"`"
);
assert_eq!(actual, expect);

§Module macros