pub struct Expectation { /* private fields */ }
Expand description

Expectation type for methods taking a &mut self argument and returning references. This is the type returned by the expect_* methods.

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impl Expectation

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pub fn call_mut(&mut self, x: i32) -> &mut i32

Simulating calling the real method for this expectation

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pub fn return_var(&mut self, __mockall_o: i32) -> &mut Self

Convenience method that can be used to supply a return value for a Expectation. The value will be returned by mutable reference.

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pub fn returning<MockallF>(&mut self, __mockall_f: MockallF) -> &mut Self
where MockallF: FnMut(i32) -> i32 + Send + Sync + 'static,

Supply a closure that the Expectation will use to create its return value. The return value will be returned by mutable reference.

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pub fn returning_st<MockallF>(&mut self, __mockall_f: MockallF) -> &mut Self
where MockallF: FnMut(i32) -> i32 + 'static,

Single-threaded version of returning. Can be used when the argument or return type isn’t Send.

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pub fn in_sequence(&mut self, __mockall_seq: &mut Sequence) -> &mut Self

Add this expectation to a Sequence.

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pub fn never(&mut self) -> &mut Self

Forbid this expectation from ever being called.

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pub fn new() -> Self

Create a new, default, Expectation

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pub fn once(&mut self) -> &mut Self

Expect this expectation to be called exactly once. Shortcut for times(1).

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pub fn times<MockallR>(&mut self, __mockall_r: MockallR) -> &mut Self
where MockallR: Into<TimesRange>,

Restrict the number of times that that this method may be called.

The argument may be:

  • A fixed number: .times(4)
  • Various types of range:
    • .times(5..10)
    • .times(..10)
    • .times(5..)
    • .times(5..=10)
    • .times(..=10)
  • The wildcard: .times(..)
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pub fn with<MockallMatcher0: Predicate<i32> + Send + 'static>( &mut self, x: MockallMatcher0 ) -> &mut Self

Set matching crieteria for this Expectation.

The matching predicate can be anything implemening the Predicate trait. Only one matcher can be set per Expectation at a time.

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pub fn withf<MockallF>(&mut self, __mockall_f: MockallF) -> &mut Self
where MockallF: Fn(&i32) -> bool + Send + 'static,

Set a matching function for this Expectation.

This is equivalent to calling with with a function argument, like with(predicate::function(f)).

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pub fn withf_st<MockallF>(&mut self, __mockall_f: MockallF) -> &mut Self
where MockallF: Fn(&i32) -> bool + 'static,

Single-threaded version of withf. Can be used when the argument type isn’t Send.

Trait Implementations§

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impl Default for Expectation

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Any for T
where T: Any + ?Sized,

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fn type_id_compat(&self) -> TypeId

TODO: once 1.33.0 is the minimum supported compiler version, remove Any::type_id_compat and use StdAny::type_id instead. https://github.com/rust-lang/rust/issues/27745
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.