From f5c71b3d5f3a10c7cbe8b9b947a1e4dfdcfc637e Mon Sep 17 00:00:00 2001
From: Brian Ward <bward@flatironinstitute.org>
Date: Tue, 25 Jul 2023 11:36:50 -0400
Subject: [PATCH] Add test

---
 test/unit/math/prim/fun/stan_print_test.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/test/unit/math/prim/fun/stan_print_test.cpp b/test/unit/math/prim/fun/stan_print_test.cpp
index f7b6fcee487..53cb6ec4cb4 100644
--- a/test/unit/math/prim/fun/stan_print_test.cpp
+++ b/test/unit/math/prim/fun/stan_print_test.cpp
@@ -11,6 +11,9 @@ TEST(MathPrim, basic_print) {
 
   std::tuple<Eigen::VectorXd, int, std::vector<double>> tup(v, i, a);
 
+  std::vector<std::tuple<Eigen::VectorXd, int, std::vector<double>>> arr_tup{
+      tup, tup};
+
   {
     std::stringstream s;
     stan::math::stan_print(&s, i);
@@ -52,6 +55,11 @@ TEST(MathPrim, basic_print) {
     stan::math::stan_print(&s, tup);
     EXPECT_TRUE(s.str().find("([1],1,[1])") != std::string::npos);
   }
+  {
+    std::stringstream s;
+    stan::math::stan_print(&s, arr_tup);
+    EXPECT_TRUE(s.str().find("[([1],1,[1])") != std::string::npos);
+  }
 }
 
 TEST(MathPrim, basic_expressions) {