Add failing test for overlapping chunks and sections

Author: lionel-

crates/ark/src/lsp/folding_range.rs

@@ -466,6 +466,24 @@ mod tests {
         );
     }
 
+    #[test]
+    fn test_folding_section_chunks_with_section_in_middle() {
+        // FIXME: First chunk overlaps section, and section overlaps second
+        // chunk. Causes section folding to not appear in Positron.
+        insta::assert_debug_snapshot!(test_folding_range(
+            "
+#+ Cell
+a
+
+# Section ----
+b
+
+#+ Other cell
+c
+"
+        ));
+    }
+
     #[test]
     fn test_folding_section_comments_basic() {
         // Note the chunks are nested in comment sections

crates/ark/src/lsp/snapshots/ark__lsp__folding_range__tests__folding_section_chunks_with_section_in_middle.snap

@@ -0,0 +1,36 @@
+---
+source: crates/ark/src/lsp/folding_range.rs
+expression: "test_folding_range(\"\n#+ Cell\na\n\n# Section ----\nb\n\n#+ Other cell\nc\n\")"
+---
+[
+    FoldingRange {
+        start_line: 1,
+        start_character: None,
+        end_line: 6,
+        end_character: None,
+        kind: Some(
+            Region,
+        ),
+        collapsed_text: None,
+    },
+    FoldingRange {
+        start_line: 4,
+        start_character: None,
+        end_line: 8,
+        end_character: None,
+        kind: Some(
+            Region,
+        ),
+        collapsed_text: None,
+    },
+    FoldingRange {
+        start_line: 7,
+        start_character: None,
+        end_line: 8,
+        end_character: None,
+        kind: Some(
+            Region,
+        ),
+        collapsed_text: None,
+    },
+]