From 2da6088d0c8167fe7e23b5653b685d8471b3a4f4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ion=20Gazta=C3=B1aga?= <igaztanaga@gmail.com>
Date: Fri, 31 Dec 2021 01:03:11 +0100
Subject: [PATCH] Improve test directly using transform_iterator and several
 containers

---
 test/boost_iterator_comp_test.cpp | 60 ++++++++++++++++++++++++++-----
 1 file changed, 52 insertions(+), 8 deletions(-)

diff --git a/test/boost_iterator_comp_test.cpp b/test/boost_iterator_comp_test.cpp
index 105ab60..385d4bb 100644
--- a/test/boost_iterator_comp_test.cpp
+++ b/test/boost_iterator_comp_test.cpp
@@ -1,12 +1,56 @@
-#include <boost/container/string.hpp>
-#include <boost/archive/iterators/binary_from_base64.hpp>
+#include <boost/iterator/transform_iterator.hpp>
+#include <boost/container/vector.hpp>
+#include <boost/container/list.hpp>
+#include <boost/container/slist.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+using namespace boost::container;
+
+struct func
+{
+   typedef int result_type;
+   int operator()(const int i) const
+   {  return i*2; }
+};
 
 int main()
 {
-    using String = boost::container::string;
-    using Iterator = boost::archive::iterators::binary_from_base64<String::iterator>;
+   const std::size_t N = 10u;
+   func f;
+   slist<int>s(N);
+   list<int>l(N);
+   vector<int>v(N);
+
+   vector<int>v2;
+   v2.insert(v2.end(), boost::make_transform_iterator(s.begin(), f), boost::make_transform_iterator(s.end(), f));
+   v2.insert(v2.end(), boost::make_transform_iterator(l.begin(), f), boost::make_transform_iterator(l.end(), f));
+   v2.insert(v2.end(), boost::make_transform_iterator(v.begin(), f), boost::make_transform_iterator(v.end(), f));
+
+   v2.assign(boost::make_transform_iterator(s.begin(), f), boost::make_transform_iterator(s.end(), f));
+   v2.assign(boost::make_transform_iterator(l.begin(), f), boost::make_transform_iterator(l.end(), f));
+   v2.assign(boost::make_transform_iterator(v.begin(), f), boost::make_transform_iterator(v.end(), f));
+
+   {
+      //slist
+      boost::transform_iterator<func, typename slist<int>::iterator>
+         ti(s.begin()), ti2(s.end()), ti3(ti);
+      boost::intrusive::iterator_uadvance(ti3, v.size());
+      BOOST_TEST(ti3 == ti2);
+   }
+   {
+      //list
+      boost::transform_iterator<func, typename list<int>::iterator>
+         ti(l.begin()), ti2(l.end()), ti3(ti);
+      boost::intrusive::iterator_uadvance(ti3, v.size());
+      BOOST_TEST(ti3 == ti2);
+   }
+   {
+      //vector
+      boost::transform_iterator<func, typename vector<int>::iterator>
+         ti(v.begin()), ti2(v.end()), ti3(ti);
+      boost::intrusive::iterator_uadvance(ti3, v.size());
+      BOOST_TEST(ti3 == ti2);
+   }
+   return boost::report_errors();
+}
 
-    String s;
-    s.assign(Iterator{s.begin()},Iterator{s.end()});
-    return 0;
-}
\ No newline at end of file