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Matcher

test_better

Trait Matcher 

Source 
pub trait Matcher<T>
where
    T: ?Sized,
{
    // Required methods
    fn check(&self, actual: &T) -> MatchResult;
    fn description(&self) -> Description;
}
Expand description

A reusable expectation about a value of type T.

T is ?Sized so matchers can target unsized values directly (str, [u8]) without forcing the caller to borrow through a reference type.

Required Methods§

Source

fn check(&self, actual: &T) -> MatchResult

Checks actual against this matcher’s expectation.

Source

fn description(&self) -> Description

Describes what this matcher expects, for use in failure output and in combinator descriptions.

Implementors§