From c53b5dbce54acf7ea539ffa102d8a56d23d91e65 Mon Sep 17 00:00:00 2001
From: id3v1669 <id3v1669@gmail.com>
Date: Sat, 30 Aug 2025 15:58:50 +0800
Subject: [PATCH] mv: symlinks as files, tests

---
 tests/by-util/test_mv.rs | 72 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)

diff --git a/tests/by-util/test_mv.rs b/tests/by-util/test_mv.rs
index 23d7315fb..7741fa8ca 100644
--- a/tests/by-util/test_mv.rs
+++ b/tests/by-util/test_mv.rs
@@ -398,6 +398,78 @@ fn test_mv_replace_file() {
     assert!(at.file_exists(file_b));
 }
 
+#[test]
+#[cfg(all(unix, not(target_os = "android")))]
+fn test_mv_replace_symlink_with_symlink() {
+    let (at, mut ucmd) = at_and_ucmd!();
+
+    at.mkdir("a");
+    at.mkdir("b");
+    at.touch("a/empty_file_a");
+    at.touch("b/empty_file_b");
+
+    at.symlink_dir("a", "symlink_a");
+    at.symlink_dir("b", "symlink_b");
+
+    assert_eq!(at.read("symlink_a/empty_file_a"), "");
+
+    ucmd.arg("-T")
+        .arg("symlink_b")
+        .arg("symlink_a")
+        .succeeds()
+        .no_stderr();
+
+    assert!(at.file_exists("symlink_a/empty_file_b"));
+    assert!(!at.file_exists("symlink_a/empty_file_a"));
+    assert!(!at.symlink_exists("symlink_b"));
+}
+
+#[test]
+#[cfg(all(unix, not(target_os = "android")))]
+fn test_mv_replace_symlink_with_directory() {
+    let (at, mut ucmd) = at_and_ucmd!();
+
+    at.mkdir("a");
+    at.mkdir("b");
+    at.touch("a/empty_file_a");
+    at.touch("b/empty_file_b");
+
+    at.symlink_dir("a", "symlink");
+
+    ucmd.arg("-T")
+        .arg("b")
+        .arg("symlink")
+        .fails()
+        .stderr_contains("cannot overwrite non-directory")
+        .stderr_contains("with directory");
+}
+
+#[test]
+#[cfg(all(unix, not(target_os = "android")))]
+fn test_mv_replace_symlink_with_file() {
+    let (at, mut ucmd) = at_and_ucmd!();
+
+    at.mkdir("a");
+    at.touch("a/empty_file_a");
+    at.touch("empty_file_b");
+
+    at.symlink_dir("a", "symlink");
+
+    assert!(at.file_exists("symlink/empty_file_a"));
+
+    ucmd.arg("-T")
+        .arg("empty_file_b")
+        .arg("symlink")
+        .succeeds()
+        .no_stderr();
+
+    assert!(at.file_exists("symlink"));
+    assert!(!at.is_symlink("symlink"));
+    assert!(!at.file_exists("empty_file_b"));
+    assert!(at.dir_exists("a"));
+    assert!(at.file_exists("a/empty_file_a"));
+}
+
 #[test]
 fn test_mv_force_replace_file() {
     let (at, mut ucmd) = at_and_ucmd!();