diff options
Diffstat (limited to 'third_party/rust/tokio-stream/tests/stream_once.rs')
| -rw-r--r-- | third_party/rust/tokio-stream/tests/stream_once.rs | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/third_party/rust/tokio-stream/tests/stream_once.rs b/third_party/rust/tokio-stream/tests/stream_once.rs new file mode 100644 index 0000000000..f32bad3a12 --- /dev/null +++ b/third_party/rust/tokio-stream/tests/stream_once.rs @@ -0,0 +1,12 @@ +use tokio_stream::{self as stream, Stream, StreamExt}; + +#[tokio::test] +async fn basic_usage() { + let mut one = stream::once(1); + + assert_eq!(one.size_hint(), (1, Some(1))); + assert_eq!(Some(1), one.next().await); + + assert_eq!(one.size_hint(), (0, Some(0))); + assert_eq!(None, one.next().await); +} |