Struct eventually::aggregate::test::Scenario

pub struct Scenario<T>(/* private fields */)
where
    T: Aggregate,
    T::Id: Clone,
    T::Event: Debug + PartialEq,
    T::Error: Debug;

A test scenario that can be used to test an Aggregate and Aggregate Root using a given-then-when canvas approach.

Implementations

impl<T> Scenario<T>

where T: Aggregate, T::Id: Clone, T::Event: Debug + PartialEq, T::Error: Debug,

pub fn new() -> Self

Creates a new Scenario instance.

pub fn given(self, events: Vec<Envelope<T::Event>>) -> ScenarioGiven<T>

Specifies the precondition for the test Scenario.

In other words, it can be used to specify all the Domain Events that make up the state of the Aggregate Root.

pub fn when<R, F, Err>(self, f: F) -> ScenarioWhen<T, R, F, Err>

where R: From<Root<T>>, F: Fn() -> Result<R, Err>,

Specifies the action/mutation to execute in this Scenario.

Use this branch when testing actions/mutations that create new Aggregate Root instances, i.e. with no prior Domain Events recorded.

Trait Implementations

impl<T> Clone for Scenario<T>

where T: Aggregate + Clone, T::Id: Clone, T::Event: Debug + PartialEq, T::Error: Debug,

fn clone(&self) -> Scenario<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> Default for Scenario<T>

where T: Aggregate, T::Id: Clone, T::Event: Debug + PartialEq, T::Error: Debug,

fn default() -> Self

Returns the “default value” for a type.

impl<T> Copy for Scenario<T>

where T: Aggregate + Copy, T::Id: Clone, T::Event: Debug + PartialEq, T::Error: Debug,