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https://github.com/rust-lang/rustlings.git
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2ec9c0957e
- Renamed/ordered the directories for macros, clippy, and conversions, shifting them all one up in numerical order to fit async as number 21 - Added the 21_async directories in exercises and solutions - Added async1.rs in the 21_async directory in exercises and solutions - Added async to the info.toml in rustlings-macros and reordered the rest of the exercises in there as well - Created an exercise for async1 and its solution
30 lines
719 B
Rust
30 lines
719 B
Rust
use tokio::time::{sleep, Duration};
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// Change the function signature to be async and return a Future
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async fn delayed_hello() -> String {
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// Wait for 1 second
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sleep(Duration::from_secs(1)).await;
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"Hello, world!".to_string()
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}
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#[tokio::main]
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async fn main() {
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// You can experiment optionally here
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use tokio::time::Duration;
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#[tokio::test]
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async fn test_delayed_hello() {
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let start = std::time::Instant::now();
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let result = delayed_hello().await;
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let duration = start.elapsed();
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assert_eq!(result, "Hello, world!");
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assert!(duration >= Duration::from_secs(1));
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println!("Test passed!");
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}
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} |