maybe_fut/
context.rs

1/// Returns whether the current code is being executed in an async context.
2///
3/// If tokio is disabled, this function will always return false.
4#[inline]
5pub fn is_async_context() -> bool {
6    #[cfg(tokio)]
7    {
8        tokio::runtime::Handle::try_current().is_ok()
9    }
10    #[cfg(not(tokio))]
11    {
12        false
13    }
14}
15
16#[cfg(test)]
17mod test {
18
19    use super::*;
20
21    #[test]
22    fn test_should_return_false_if_not_in_async_context() {
23        assert!(!is_async_context(),);
24    }
25
26    #[tokio::test]
27    async fn test_should_return_true_if_in_async_context() {
28        assert!(is_async_context());
29    }
30}
maybe_fut/context.rs

maybe_fut/
context.rs
