a test to assure non-existing worktree directories don't hinder discovery (#301)

Author: Byron

git-discover/tests/fixtures/make_basic_repo.sh

@@ -17,6 +17,8 @@ git clone --bare --shared . bare.git
 git worktree add worktrees/a
 git worktree add worktrees/b-private-dir-deleted
 rm -R .git/worktrees/b-private-dir-deleted
+git worktree add worktrees/c-worktree-deleted
+rm -R worktrees/c-worktree-deleted
 
 cd bare.git
 git worktree add ../worktrees/from-bare/c

git-discover/tests/upwards/mod.rs

@@ -142,6 +142,19 @@ fn from_existing_worktree_inside_dot_git() {
     );
 }
 
+#[test]
+fn from_non_existing_worktree_inside_dot_git() {
+    let top_level_repo = repo_path().unwrap();
+    let (path, _trust) = git_discover::upwards(top_level_repo.join(".git/worktrees/c-worktree-deleted")).unwrap();
+    let suffix = std::path::Path::new(top_level_repo.file_name().unwrap())
+        .join("worktrees")
+        .join("c-worktree-deleted");
+    assert!(
+        matches!(path, git_discover::repository::Path::LinkedWorkTree { work_dir, .. } if work_dir.ends_with(suffix)),
+        "it's no problem if work-dirs don't exist - this can be discovered later and a lot of operations are possible anyway."
+    );
+}
+
 #[test]
 fn from_existing_worktree() -> crate::Result {
     let top_level_repo = repo_path()?;