Struct Description 

pub struct Description { /* private fields */ }

A composable description of a matcher’s expectation.

Implementations

impl Description

pub fn text(text: impl Into<Cow<'static, str>>) -> Description

A leaf description: a finished phrase like equal to 4.

pub fn and(self, other: Description) -> Description

Combines this description with other under conjunction. Nested conjunctions are flattened, so a.and(b).and(c) is a single All.

pub fn or(self, other: Description) -> Description

Combines this description with other under disjunction. Nested disjunctions are flattened, so a.or(b).or(c) is a single Any.

pub fn labeled( header: impl Into<Cow<'static, str>>, child: Description, ) -> Description

Places child indented beneath a header: line. Used by nested matchers to keep their expected blocks readable.

Trait Implementations

impl Clone for Description

fn clone(&self) -> Description

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Description

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

Formats the value using the given formatter.

impl Display for Description

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

Formats the value using the given formatter.

impl Not for Description

fn not(self) -> Description

Negates this description. Double negation cancels, so !!x renders as x.

type Output = Description

The resulting type after applying the ! operator.

impl PartialEq for Description

fn eq(&self, other: &Description) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Description

impl StructuralPartialEq for Description