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//! Utilities for testing actors.
//!
//! [`veecle_os_test::execute!`](crate::execute) can be used in place of [`veecle_os::runtime::execute!`](veecle_os_runtime::execute!)
//! to write tests for actors.
//!
//! [`veecle_os_test::block_on_future`](block_on_future) can be used to block the current thread until the future resolves.
//!
//! The following example shows how to implement a test:
//!
//! ```
//! use core::convert::Infallible;
//!
//! #[derive(Debug, Default, veecle_os_runtime::Storable)]
//! pub struct Number(usize);
//!
//! #[derive(Debug, Default, veecle_os_runtime::Storable)]
//! pub struct Total(usize);
//! #
//! # use veecle_os_runtime::{InitializedReader, Reader, Writer};
//!
//! // `total_actor` reads numbers from a `Number` reader, keeps a running
//! // total, and writes running totals to a `Total` writer.
//! #[veecle_os_runtime::actor]
//! async fn total_actor(
//! mut total: Writer<'_, Total>,
//! mut numbers: InitializedReader<'_, Number>,
//! ) -> Infallible {
//! let mut sum: usize = 0;
//! loop {
//! numbers.wait_for_update().await.read(|value| {
//! sum += value.0;
//! });
//!
//! total.write(Total(sum)).await;
//! }
//! }
//!
//! // This test writes 1 and 2 to the `Number` slot and verifies that
//! // `total_actor` writes 1 and 3 as the running totals.
//!
//! veecle_os_test::block_on_future(
//! veecle_os_test::execute! {
//! store: [Total, Number],
//! actors: [TotalActor],
//! validation: async |mut total_reader: Reader<'a, Total>, mut numbers_writer: Writer<'a, Number>| {
//! numbers_writer.write(Number(0)).await;
//! let mut total_reader = total_reader.wait_init().await;
//! total_reader.wait_for_update().await.read(|value| {
//! assert_eq!(value.0, 0);
//! });
//! numbers_writer.write(Number(1)).await;
//! total_reader.wait_for_update().await.read(|value| {
//! assert_eq!(value.0, 1);
//! });
//! numbers_writer.write(Number(2)).await;
//! total_reader.wait_for_update().await.read(|value| {
//! assert_eq!(value.0, 3);
//! });
//! }
//! }
//! );
//! ```
/// Reexport of [`futures::executor::block_on`] for convenience.
pub use block_on as block_on_future;
/// Internal exports for `macro_rules!` purposes.