1 files changed, 102 insertions, 0 deletions
diff --git a/third_party/rust/tokio/tests/fs_dir.rs b/third_party/rust/tokio/tests/fs_dir.rs
new file mode 100644
index 0000000000..eaff59da4f
--- /dev/null
+++ b/third_party/rust/tokio/tests/fs_dir.rs
@@ -0,0 +1,102 @@
+#![warn(rust_2018_idioms)]
+#![cfg(feature = "full")]
+
+use tokio::fs;
+use tokio_test::assert_ok;
+
+use std::sync::{Arc, Mutex};
+use tempfile::tempdir;
+
+#[tokio::test]
+async fn create_dir() {
+    let base_dir = tempdir().unwrap();
+    let new_dir = base_dir.path().join("foo");
+    let new_dir_2 = new_dir.clone();
+
+    assert_ok!(fs::create_dir(new_dir).await);
+
+    assert!(new_dir_2.is_dir());
+}
+
+#[tokio::test]
+async fn create_all() {
+    let base_dir = tempdir().unwrap();
+    let new_dir = base_dir.path().join("foo").join("bar");
+    let new_dir_2 = new_dir.clone();
+
+    assert_ok!(fs::create_dir_all(new_dir).await);
+    assert!(new_dir_2.is_dir());
+}
+
+#[tokio::test]
+async fn remove() {
+    let base_dir = tempdir().unwrap();
+    let new_dir = base_dir.path().join("foo");
+    let new_dir_2 = new_dir.clone();
+
+    std::fs::create_dir(new_dir.clone()).unwrap();
+
+    assert_ok!(fs::remove_dir(new_dir).await);
+    assert!(!new_dir_2.exists());
+}
+
+#[tokio::test]
+async fn read_inherent() {
+    let base_dir = tempdir().unwrap();
+
+    let p = base_dir.path();
+    std::fs::create_dir(p.join("aa")).unwrap();
+    std::fs::create_dir(p.join("bb")).unwrap();
+    std::fs::create_dir(p.join("cc")).unwrap();
+
+    let files = Arc::new(Mutex::new(Vec::new()));
+
+    let f = files.clone();
+    let p = p.to_path_buf();
+
+    let mut entries = fs::read_dir(p).await.unwrap();
+
+    while let Some(e) = assert_ok!(entries.next_entry().await) {
+        let s = e.file_name().to_str().unwrap().to_string();
+        f.lock().unwrap().push(s);
+    }
+
+    let mut files = files.lock().unwrap();
+    files.sort(); // because the order is not guaranteed
+    assert_eq!(
+        *files,
+        vec!["aa".to_string(), "bb".to_string(), "cc".to_string()]
+    );
+}
+
+#[tokio::test]
+async fn read_stream() {
+    use tokio::stream::StreamExt;
+
+    let base_dir = tempdir().unwrap();
+
+    let p = base_dir.path();
+    std::fs::create_dir(p.join("aa")).unwrap();
+    std::fs::create_dir(p.join("bb")).unwrap();
+    std::fs::create_dir(p.join("cc")).unwrap();
+
+    let files = Arc::new(Mutex::new(Vec::new()));
+
+    let f = files.clone();
+    let p = p.to_path_buf();
+
+    let mut entries = fs::read_dir(p).await.unwrap();
+
+    while let Some(res) = entries.next().await {
+        let e = assert_ok!(res);
+        let s = e.file_name().to_str().unwrap().to_string();
+        f.lock().unwrap().push(s);
+    }
+
+    let mut files = files.lock().unwrap();
+    files.sort(); // because the order is not guaranteed
+    assert_eq!(
+        *files,
+        vec!["aa".to_string(), "bb".to_string(), "cc".to_string()]
+    );
+}