From 134475e292505bd5d7dcac649e4c87834e2df77a Mon Sep 17 00:00:00 2001
From: ToruNiina <niina.toru.68u@gmail.com>
Date: Fri, 28 Jun 2019 14:58:16 +0900
Subject: [PATCH] test: check ostream op for comment containers

---
 tests/test_comments.cpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/tests/test_comments.cpp b/tests/test_comments.cpp
index 1852dee..5a3389c 100644
--- a/tests/test_comments.cpp
+++ b/tests/test_comments.cpp
@@ -460,3 +460,19 @@ BOOST_AUTO_TEST_CASE(test_overwrite_comments)
         BOOST_TEST(u.as_integer() == 42);
     }
 }
+
+BOOST_AUTO_TEST_CASE(test_output_comments)
+{
+    using value_type = toml::basic_value<toml::preserve_comments>;
+    {
+        const value_type v(42, {"comment1", "comment2"});
+        std::ostringstream oss;
+        oss << v.comments();
+
+        std::ostringstream ref;
+        ref << "#comment1\n";
+        ref << "#comment2\n";
+
+        BOOST_TEST(oss.str() == ref.str());
+    }
+}