add test for symlinked git dir with submodules

Author: arumugamramaswamy

gix/tests/fixtures/generated-archives/make_submodules.tar

@@ -151,4 +151,18 @@ git clone with-submodules not-a-submodule
   git add m1 && git commit -m "no submodule in index and commit, but in configuration"
 )
 
-git init unborn
+git init unborn
+
+mkdir symlinked-git-dir
+(cd symlinked-git-dir
+  git init -q r1
+  (cd r1
+    git commit -q --allow-empty -m "init"
+  )
+
+  git config -f r1/.git/config core.worktree `pwd`
+  ln -s r1/.git .git
+
+  git -c protocol.file.allow=always submodule add ../module1 m1
+  git commit -m "add module 1"
+)

gix/tests/fixtures/make_submodules.sh

@@ -310,6 +310,20 @@ mod index_worktree {
             );
         }
 
+        #[test]
+        fn submodule_in_symlinked_dir() -> crate::Result {
+            let repo = submodule_repo("symlinked-git-dir")?;
+            let mut status = repo
+                .status(gix::progress::Discard)?
+                .index_worktree_options_mut(|opts| {
+                    opts.sorting =
+                        Some(gix::status::plumbing::index_as_worktree_with_renames::Sorting::ByPathCaseSensitive);
+                })
+                .into_index_worktree_iter(None)?;
+            assert!(status.all(|r| r.is_ok()), "status should not have any errors");
+            Ok(())
+        }
+
         #[test]
         fn submodule_modification() -> crate::Result {
             let repo = submodule_repo("modified-untracked-and-submodule-head-changed-and-modified")?;