Trait cucumber::Writer

pub trait Writer<World> {
    type Cli: Args;

    // Required method
    fn handle_event(
        &mut self,
        ev: Result<Event<Cucumber<World>>>,
        cli: &Self::Cli
    ) -> impl Future<Output = ()>;
}

Writer of Cucumber events to some output.

As Runner produces events in a happened-before order (see its order guarantees), Writers are required to be Normalized.

As Cucumber::run() returns Writer, it can hold some state inside for inspection after execution. See Summarize and Cucumber::run_and_exit() for examples.

Required Associated Types

type Cli: Args

CLI options of this Writer. In case no options should be introduced, just use cli::Empty.

All CLI options from Parser, Runner and Writer will be merged together, so overlapping arguments will cause a runtime panic.

Required Methods

fn handle_event( &mut self, ev: Result<Event<Cucumber<World>>>, cli: &Self::Cli ) -> impl Future<Output = ()>

Handles the given Cucumber event.

Object Safety

This trait is not object safe.

Implementors

impl<W, L, R> Writer<W> for Tee<L, R>

where W: World, L: Writer<W>, R: Writer<W>,

type Cli = Compose<<L as Writer<W>>::Cli, <R as Writer<W>>::Cli>

impl<W, L, R, F> Writer<W> for Or<L, R, F>

where W: World, L: Writer<W>, R: Writer<W>, F: FnMut(&Result<Event<Cucumber<W>>>, &Compose<L::Cli, R::Cli>) -> bool,

type Cli = Compose<<L as Writer<W>>::Cli, <R as Writer<W>>::Cli>

impl<W, Out> Writer<W> for Basic<Out>

where W: World + Debug, Out: Write,

type Cli = Cli

impl<W, Out> Writer<W> for JUnit<W, Out>

where W: World + Debug, Out: Write,

Available on crate feature output-junit only.

type Cli = Cli

impl<W, Wr> Writer<W> for Summarize<Wr>

where W: World, Wr: Arbitrary<W, String> + Summarizable, Wr::Cli: Colored,

type Cli = <Wr as Writer<W>>::Cli

impl<W, Wr, F> Writer<W> for FailOnSkipped<Wr, F>

where W: World, F: Fn(&Feature, Option<&Rule>, &Scenario) -> bool, Wr: Writer<W>,

type Cli = <Wr as Writer<W>>::Cli

impl<W, Wr, F> Writer<W> for Repeat<W, Wr, F>

where W: World, Wr: Writer<W> + NonTransforming, F: Fn(&Result<Event<Cucumber<W>>>) -> bool,

type Cli = <Wr as Writer<W>>::Cli

impl<W: World + Debug, Out: Write> Writer<W> for Json<Out>

Available on crate feature output-json only.

type Cli = Empty

impl<W: World + Debug, Out: Write> Writer<W> for Libtest<W, Out>

Available on crate feature libtest only.

type Cli = Cli

impl<W: World, Wr: Writer<W> + ?Sized> Writer<W> for Arbitrary<Wr>

type Cli = <Wr as Writer<W>>::Cli

impl<W: World, Wr: Writer<W> + ?Sized> Writer<W> for Stats<Wr>

type Cli = <Wr as Writer<W>>::Cli

impl<W: World, Wr: Writer<W> + ?Sized> Writer<W> for AssertNormalized<Wr>

type Cli = <Wr as Writer<W>>::Cli

impl<World, Wr: Writer<World>> Writer<World> for Normalize<World, Wr>

type Cli = <Wr as Writer<World>>::Cli