test: we should find broken symlink with and without --follow

tests/testenv/mod.rs

@@ -162,6 +162,25 @@ impl TestEnv {
         }
     }
 
+    /// Create a broken symlink at the given path in the temp_dir.
+    pub fn create_broken_symlink<P: AsRef<Path>>(
+        &mut self,
+        link_path: P,
+    ) -> Result<PathBuf, io::Error> {
+        let root = self.test_root();
+        let broken_symlink_link = root.join(link_path);
+        {
+            let temp_target_dir = TempDir::new("fd-tests-broken-symlink")?;
+            let broken_symlink_target = temp_target_dir.path().join("broken_symlink_target");
+            fs::File::create(&broken_symlink_target)?;
+            #[cfg(unix)]
+            unix::fs::symlink(&broken_symlink_target, &broken_symlink_link)?;
+            #[cfg(windows)]
+            windows::fs::symlink_file(&broken_symlink_target, &broken_symlink_link)?;
+        }
+        Ok(broken_symlink_link)
+    }
+
     /// Get the root directory for the tests.
     pub fn test_root(&self) -> PathBuf {
         self.temp_dir.path().to_path_buf()

tests/tests.rs

@@ -598,6 +598,15 @@ fn test_file_system_boundaries() {
     );
 }
 
+#[test]
+fn test_follow_broken_symlink() {
+    let mut te = TestEnv::new(DEFAULT_DIRS, DEFAULT_FILES);
+    te.create_broken_symlink("broken_symlink")
+        .expect("Failed to create broken symlink.");
+
+    te.assert_output(&["--follow", "--type", "f", "symlink"], "broken_symlink");
+}
+
 /// Null separator (--print0)
 #[test]
 fn test_print0() {
@@ -878,7 +887,9 @@ fn test_extension() {
 /// Symlink as search directory
 #[test]
 fn test_symlink_as_root() {
-    let te = TestEnv::new(DEFAULT_DIRS, DEFAULT_FILES);
+    let mut te = TestEnv::new(DEFAULT_DIRS, DEFAULT_FILES);
+    te.create_broken_symlink("broken_symlink")
+        .expect("Failed to create broken symlink.");
 
     // From: http://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html
     // The getcwd() function shall place an absolute pathname of the current working directory in
@@ -899,6 +910,7 @@ fn test_symlink_as_root() {
         &["", parent_parent],
         &format!(
             "{dir}/a.foo
+            {dir}/broken_symlink
             {dir}/e1 e2
             {dir}/one
             {dir}/one/b.foo
@@ -990,7 +1002,6 @@ fn test_symlink_and_full_path_abs_path() {
         ),
     );
 }
-
 /// Exclude patterns (--exclude)
 #[test]
 fn test_excludes() {