1 files changed, 20 insertions, 0 deletions
diff --git a/third_party/rust/tokio/tests/fs.rs b/third_party/rust/tokio/tests/fs.rs
new file mode 100644
index 0000000000..13c44c08d6
--- /dev/null
+++ b/third_party/rust/tokio/tests/fs.rs
@@ -0,0 +1,20 @@
+#![warn(rust_2018_idioms)]
+#![cfg(feature = "full")]
+
+use tokio::fs;
+use tokio_test::assert_ok;
+
+#[tokio::test]
+async fn path_read_write() {
+    let temp = tempdir();
+    let dir = temp.path();
+
+    assert_ok!(fs::write(dir.join("bar"), b"bytes").await);
+    let out = assert_ok!(fs::read(dir.join("bar")).await);
+
+    assert_eq!(out, b"bytes");
+}
+
+fn tempdir() -> tempfile::TempDir {
+    tempfile::tempdir().unwrap()
+}