test(csv-loader): add test for multiple comment lines at the beginning

with reverse references

src/csv-loader/loader.test.ts

@@ -1164,6 +1164,29 @@ describe("parseCsv - reverse reference resolution", () => {
     expect(result.reverseReferences).toHaveLength(1);
     expect(result.data[0]).toHaveProperty("orders");
   });
+
+  it("should handle multiple comment lines including plain comments and reverse references", () => {
+    const csv = [
+      "# id: id of user",
+      "# orders: list of related orders",
+      "# orders := ~order(user)",
+      "id,name",
+      "string,string",
+      "u01,Alice",
+      "u02,Bob",
+    ].join("\n");
+
+    const result = parseCsv(csv, {
+      emitTypes: false,
+      currentFilePath: path.join(fixturesDir, "test.csv"),
+    });
+
+    expect(result.reverseReferences).toHaveLength(1);
+    expect(result.reverseReferences[0].fieldName).toBe("orders");
+    expect(result.data).toHaveLength(2);
+    expect(result.data[0].id).toBe("u01");
+    expect(result.data[1].id).toBe("u02");
+  });
 });
 
 describe("parseCsv - reverse reference with resolveReferences: false", () => {