Struct PatternMatcher

pub struct PatternMatcher<'a, Actual> { /* private fields */ }

The matcher for match_pattern.

Implementations

impl<'a, Actual> PatternMatcher<'a, Actual>

pub fn new(spec: Pattern<'a, Actual>) -> Self

Create a new PatternMatcher from the given spec.

This accepts a Pattern, which you can generate using the pattern! macro.

Trait Implementations

impl<'a, Actual: Debug> Debug for PatternMatcher<'a, Actual>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a, 'b: 'a, Actual> Match<Actual> for PatternMatcher<'a, Actual>

type Fail = Mismatch<Pattern<'a, Actual>, Actual>

The failure output that is passed to the formatter.

fn matches(&mut self, actual: &Actual) -> Result<bool>

Returns true if the matcher succeeded or false if it failed.

fn fail(self, actual: Actual) -> Self::Fail

Consumes the “actual” value (the value passed to expect!) and returns a Self::Fail that describes why the matcher failed.