add a test for the memo hook

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Evan Almloff committed 2024-03-11 15:33:46 -05:00
1 parent bbc81b8f9c
commit f51b5617e1
6 files changed
+115 -31

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@@ -15,28 +15,40 @@ use std::{cell::Cell, future::Future, rc::Rc};
/// Unlike `use_future`, `use_resource` runs on the **server**
/// See [`Resource`] for more details.
/// ```rust
///fn app() -> Element {
/// let country = use_signal(|| WeatherLocation {
/// city: "Berlin".to_string(),
/// country: "Germany".to_string(),
/// coordinates: (52.5244, 13.4105)
/// });
/// # use dioxus::prelude::*;
/// # #[derive(Clone)]
/// # struct WeatherLocation {
/// # city: String,
/// # country: String,
/// # coordinates: (f64, f64),
/// # }
/// # async fn get_weather(location: &WeatherLocation) -> Result<String, String> {
/// # Ok("Sunny".to_string())
/// # }
/// # #[component]
/// # fn WeatherElement (weather: String ) -> Element { rsx! { p { "The weather is {weather}" } } }
/// fn app() -> Element {
/// let country = use_signal(|| WeatherLocation {
/// city: "Berlin".to_string(),
/// country: "Germany".to_string(),
/// coordinates: (52.5244, 13.4105)
/// });
///
/// let current_weather = //run a future inside the use_resource hook
/// use_resource(move || async move { get_weather(&country.read().clone()).await });
///
/// rsx! {
/// //the value of the future can be polled to
/// //conditionally render elements based off if the future
/// //finished (Some(Ok(_)), errored Some(Err(_)),
/// //or is still finishing (None)
/// match current_weather.value() {
/// Some(Ok(weather)) => WeatherElement { weather },
/// Some(Err(e)) => p { "Loading weather failed, {e}" }
/// None => p { "Loading..." }
/// }
/// }
///}
/// let current_weather = //run a future inside the use_resource hook
/// use_resource(move || async move { get_weather(&country()).await });
///
/// rsx! {
/// //the value of the future can be polled to
/// //conditionally render elements based off if the future
/// //finished (Some(Ok(_)), errored Some(Err(_)),
/// //or is still finishing (None)
/// match current_weather() {
/// Some(Ok(weather)) => rsx! { WeatherElement { weather } },
/// Some(Err(e)) => rsx! { p { "Loading weather failed, {e}" } },
/// None => rsx! { p { "Loading..." } }
/// }
/// }
/// }
/// ```
#[must_use = "Consider using `cx.spawn` to run a future without reading its value"]
pub fn use_resource<T, F>(future: impl Fn() -> F + 'static) -> Resource<T>