update readlink to return the path instead of mangling the buffer

2 files changed, 4 insertions, 17 deletions

diff --git a/test/test_fcntl.rs b/test/test_fcntl.rs
index c8773219..1bcf12cb 100644
--- a/test/test_fcntl.rs
+++ b/test/test_fcntl.rs
@@ -58,20 +58,8 @@ fn test_readlink() {
                      Mode::empty()).unwrap();
     let expected_dir = src.to_str().unwrap();
 
-    // When the size of the buffer is bigger than the expected directory length
-    let mut buf = vec![0; src.to_str().unwrap().len() + 1];
-    assert_eq!(readlink(&dst, &mut buf).unwrap().to_str().unwrap(), expected_dir);
-    assert_eq!(readlinkat(dirfd, "b", &mut buf).unwrap().to_str().unwrap(), expected_dir);
-
-    // When the size of the buffer is equal to the expected directory length
-    let mut exact_buf = vec![0; src.to_str().unwrap().len()];
-    assert_eq!(readlink(&dst, &mut exact_buf).unwrap().to_str().unwrap(), expected_dir);
-    assert_eq!(readlinkat(dirfd, "b", &mut exact_buf).unwrap().to_str().unwrap(), expected_dir);
-
-    // When the size of the buffer is smaller than the expected directory length
-    let mut small_buf = vec![0;0];
-    assert_eq!(readlink(&dst, &mut small_buf).unwrap().to_str().unwrap(), "");
-    assert_eq!(readlinkat(dirfd, "b", &mut small_buf).unwrap().to_str().unwrap(), "");
+    assert_eq!(readlink(&dst).unwrap().to_str().unwrap(), expected_dir);
+    assert_eq!(readlinkat(dirfd, "b").unwrap().to_str().unwrap(), expected_dir);
 
 }
 
diff --git a/test/test_unistd.rs b/test/test_unistd.rs
index 46196dec..e1e03f3f 100644
--- a/test/test_unistd.rs
+++ b/test/test_unistd.rs
@@ -576,14 +576,13 @@ fn test_canceling_alarm() {
 
 #[test]
 fn test_symlinkat() {
-    let mut buf = [0; 1024];
     let tempdir = tempfile::tempdir().unwrap();
 
     let target = tempdir.path().join("a");
     let linkpath = tempdir.path().join("b");
     symlinkat(&target, None, &linkpath).unwrap();
     assert_eq!(
-        readlink(&linkpath, &mut buf).unwrap().to_str().unwrap(),
+        readlink(&linkpath).unwrap().to_str().unwrap(),
         target.to_str().unwrap()
     );
 
@@ -592,7 +591,7 @@ fn test_symlinkat() {
     let linkpath = "d";
     symlinkat(target, Some(dirfd), linkpath).unwrap();
     assert_eq!(
-        readlink(&tempdir.path().join(linkpath), &mut buf)
+        readlink(&tempdir.path().join(linkpath))
             .unwrap()
             .to_str()
             .unwrap(),