Function galvanic_assert::matchers::variant::maybe_err
[−]
[src]
pub fn maybe_err<'a, T: 'a, E: 'a>(
matcher: Box<Matcher<'a, E> + 'a>
) -> Box<Matcher<'a, Result<T, E>> + 'a>
Matches the contents of a Result
if it is Err
againts a passed Matcher
.
Examples
use galvanic_assert::matchers::*; use galvanic_assert::matchers::variant::*; let err: Result<i32,i32> = Err(32); assert_that!(&err, maybe_err(eq(32)));