Struct Mock

pub struct Mock<RETURN, ARGS = ()> { /* private fields */ }

Struct that represents a function mock.

This is supported on feature=mock only.

Example.

Implementations

impl<RETURN, ARGS> Mock<RETURN, ARGS>

pub fn always_with_args<F: Fn(usize, ARGS) -> RETURN + Send + Sync + 'static>( f: F, ) -> Self

Creates a new Mock that always returns always the same result.

pub fn never() -> Self

Creates a new Mock that should never be called.

pub fn once_with_args<F: Fn(ARGS) -> RETURN + Send + Sync + 'static>( f: F, ) -> Self

Creates a new Mock that should be called only once.

pub fn with(f: Vec<Box<dyn Fn(ARGS) -> RETURN + Send + Sync>>) -> Self

Creates a new Mock that should be called several times.

pub fn call_with_args(&self, args: ARGS) -> RETURN

Returns the result of the mock.

Panics

Panics if the mock has been called more times than expected.

pub fn count(&self) -> usize

Returns the number of times the mock has been called.

pub fn times(&self) -> usize

Returns the number of times the mock is expected to be called.

If the mock is expected to return always the same value, usize::MAX is returned.

impl<RETURN> Mock<RETURN, ()>

pub fn always<F: Fn(usize) -> RETURN + Send + Sync + 'static>(f: F) -> Self

Creates a new Mock that always returns always the same result.

pub fn once<F: Fn() -> RETURN + Send + Sync + 'static>(f: F) -> Self

Creates a new Mock that should be called only once.

pub fn call(&self) -> RETURN

Returns the result of the mock.

Panics

Panics if the mock has been called more times than expected.

Trait Implementations

impl<RETURN, ARGS> Clone for Mock<RETURN, ARGS>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<RETURN, ARGS> Default for Mock<RETURN, ARGS>

fn default() -> Self

Returns the “default value” for a type.