1 files changed, 26 insertions, 33 deletions
diff --git a/vendor/tokio/tests/fs_link.rs b/vendor/tokio/tests/fs_link.rs
index 2ef666fb2..681b56660 100644
--- a/vendor/tokio/tests/fs_link.rs
+++ b/vendor/tokio/tests/fs_link.rs
@@ -1,10 +1,9 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(all(feature = "full", not(tokio_wasi)))] // WASI does not support all fs operations
 
 use tokio::fs;
 
-use std::io::prelude::*;
-use std::io::BufReader;
+use std::io::Write;
 use tempfile::tempdir;
 
 #[tokio::test]
@@ -13,24 +12,23 @@ async fn test_hard_link() {
     let src = dir.path().join("src.txt");
     let dst = dir.path().join("dst.txt");
 
-    {
-        let mut file = std::fs::File::create(&src).unwrap();
-        file.write_all(b"hello").unwrap();
-    }
+    std::fs::File::create(&src)
+        .unwrap()
+        .write_all(b"hello")
+        .unwrap();
 
-    let dst_2 = dst.clone();
+    fs::hard_link(&src, &dst).await.unwrap();
 
-    assert!(fs::hard_link(src, dst_2.clone()).await.is_ok());
+    std::fs::File::create(&src)
+        .unwrap()
+        .write_all(b"new-data")
+        .unwrap();
 
-    let mut content = String::new();
+    let content = fs::read(&dst).await.unwrap();
+    assert_eq!(content, b"new-data");
 
-    {
-        let file = std::fs::File::open(dst).unwrap();
-        let mut reader = BufReader::new(file);
-        reader.read_to_string(&mut content).unwrap();
-    }
-
-    assert!(content == "hello");
+    // test that this is not a symlink:
+    assert!(fs::read_link(&dst).await.is_err());
 }
 
 #[cfg(unix)]
@@ -40,25 +38,20 @@ async fn test_symlink() {
     let src = dir.path().join("src.txt");
     let dst = dir.path().join("dst.txt");
 
-    {
-        let mut file = std::fs::File::create(&src).unwrap();
-        file.write_all(b"hello").unwrap();
-    }
-
-    let src_2 = src.clone();
-    let dst_2 = dst.clone();
-
-    assert!(fs::symlink(src_2.clone(), dst_2.clone()).await.is_ok());
+    std::fs::File::create(&src)
+        .unwrap()
+        .write_all(b"hello")
+        .unwrap();
 
-    let mut content = String::new();
+    fs::symlink(&src, &dst).await.unwrap();
 
-    {
-        let file = std::fs::File::open(dst.clone()).unwrap();
-        let mut reader = BufReader::new(file);
-        reader.read_to_string(&mut content).unwrap();
-    }
+    std::fs::File::create(&src)
+        .unwrap()
+        .write_all(b"new-data")
+        .unwrap();
 
-    assert!(content == "hello");
+    let content = fs::read(&dst).await.unwrap();
+    assert_eq!(content, b"new-data");
 
     let read = fs::read_link(dst.clone()).await.unwrap();
     assert!(read == src);