diff --git a/crates/vfs/src/file_set.rs b/crates/vfs/src/file_set.rs
index e5e2ef53075..e9196fcd2f9 100644
--- a/crates/vfs/src/file_set.rs
+++ b/crates/vfs/src/file_set.rs
@@ -148,25 +148,54 @@ impl fst::Automaton for PrefixOf<'_> {
     }
 }
 
-#[test]
-fn test_partitioning() {
-    let mut file_set = FileSetConfig::builder();
-    file_set.add_file_set(vec![VfsPath::new_virtual_path("/foo".into())]);
-    file_set.add_file_set(vec![VfsPath::new_virtual_path("/foo/bar/baz".into())]);
-    let file_set = file_set.build();
+#[cfg(test)]
+mod tests {
+    use super::*;
 
-    let mut vfs = Vfs::default();
-    vfs.set_file_contents(VfsPath::new_virtual_path("/foo/src/lib.rs".into()), Some(Vec::new()));
-    vfs.set_file_contents(
-        VfsPath::new_virtual_path("/foo/src/bar/baz/lib.rs".into()),
-        Some(Vec::new()),
-    );
-    vfs.set_file_contents(
-        VfsPath::new_virtual_path("/foo/bar/baz/lib.rs".into()),
-        Some(Vec::new()),
-    );
-    vfs.set_file_contents(VfsPath::new_virtual_path("/quux/lib.rs".into()), Some(Vec::new()));
+    #[test]
+    fn path_prefix() {
+        let mut file_set = FileSetConfig::builder();
+        file_set.add_file_set(vec![VfsPath::new_virtual_path("/foo".into())]);
+        file_set.add_file_set(vec![VfsPath::new_virtual_path("/foo/bar/baz".into())]);
+        let file_set = file_set.build();
 
-    let partition = file_set.partition(&vfs).into_iter().map(|it| it.len()).collect::<Vec<_>>();
-    assert_eq!(partition, vec![2, 1, 1]);
+        let mut vfs = Vfs::default();
+        vfs.set_file_contents(
+            VfsPath::new_virtual_path("/foo/src/lib.rs".into()),
+            Some(Vec::new()),
+        );
+        vfs.set_file_contents(
+            VfsPath::new_virtual_path("/foo/src/bar/baz/lib.rs".into()),
+            Some(Vec::new()),
+        );
+        vfs.set_file_contents(
+            VfsPath::new_virtual_path("/foo/bar/baz/lib.rs".into()),
+            Some(Vec::new()),
+        );
+        vfs.set_file_contents(VfsPath::new_virtual_path("/quux/lib.rs".into()), Some(Vec::new()));
+
+        let partition = file_set.partition(&vfs).into_iter().map(|it| it.len()).collect::<Vec<_>>();
+        assert_eq!(partition, vec![2, 1, 1]);
+    }
+
+    #[test]
+    fn name_prefix() {
+        let mut file_set = FileSetConfig::builder();
+        file_set.add_file_set(vec![VfsPath::new_virtual_path("/foo".into())]);
+        file_set.add_file_set(vec![VfsPath::new_virtual_path("/foo-things".into())]);
+        let file_set = file_set.build();
+
+        let mut vfs = Vfs::default();
+        vfs.set_file_contents(
+            VfsPath::new_virtual_path("/foo/src/lib.rs".into()),
+            Some(Vec::new()),
+        );
+        vfs.set_file_contents(
+            VfsPath::new_virtual_path("/foo-things/src/lib.rs".into()),
+            Some(Vec::new()),
+        );
+
+        let partition = file_set.partition(&vfs).into_iter().map(|it| it.len()).collect::<Vec<_>>();
+        assert_eq!(partition, vec![1, 1, 0]);
+    }
 }