Macro assertables::assert_not_contains
source · macro_rules! assert_not_contains { ($container:expr, $containee:expr $(,)?) => { ... }; ($container:expr, $containee:expr, $($message:tt)+) => { ... }; }
Expand description
Assert a container is a match for an expression.
-
If true, return
()
. -
Otherwise, call
panic!
with a message and the values of the expressions with their debug representations.
Examples
// Return Ok
let a = "foogoo";
let b = "zz";
assert_not_contains!(a, b);
//-> ()
// Panic with error message
let result = panic::catch_unwind(|| {
let a = "foogoo";
let b = "oo";
assert_not_contains!(a, b);
//-> panic!
});
assert!(result.is_err());
let actual = result.unwrap_err().downcast::<String>().unwrap().to_string();
let expect = concat!(
"assertion failed: `assert_not_contains!(container, containee)`\n",
" container label: `a`,\n",
" container debug: `\"foogoo\"`,\n",
" containee label: `b`,\n",
" containee debug: `\"oo\"`"
);
assert_eq!(actual, expect);