Add array_iterator_test.cpp

test/Jamfile.v2

@@ -34,6 +34,7 @@ run array_init_test.cpp ;
 run array_copy_test.cpp ;
 run array_convert_test.cpp ;
 run array_data_test.cpp ;
+run array_iterator_test.cpp ;
 
 #
 

test/array_iterator_test.cpp

@@ -0,0 +1,108 @@
+// Copyright 2025 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt)
+
+#include <boost/array.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <cstddef>
+
+template<class T, std::size_t N> void test()
+{
+    {
+        boost::array<T, N> a = {{}};
+
+        T* p1 = a.data();
+
+        {
+            T* p2 = a.begin();
+            T* p3 = a.end();
+
+            BOOST_TEST_EQ( p2, p1 );
+            BOOST_TEST_EQ( p3, p1 + N );
+        }
+
+        {
+            T const* p2 = a.cbegin();
+            T const* p3 = a.cend();
+
+            BOOST_TEST_EQ( p2, p1 );
+            BOOST_TEST_EQ( p3, p1 + N );
+        }
+    }
+
+    {
+        boost::array<T, N> const a = {{}};
+
+        T const* p1 = a.data();
+
+        {
+            T const* p2 = a.begin();
+            T const* p3 = a.end();
+
+            BOOST_TEST_EQ( p2, p1 );
+            BOOST_TEST_EQ( p3, p1 + N );
+        }
+
+        {
+            T const* p2 = a.cbegin();
+            T const* p3 = a.cend();
+
+            BOOST_TEST_EQ( p2, p1 );
+            BOOST_TEST_EQ( p3, p1 + N );
+        }
+    }
+}
+
+template<class T> void test2()
+{
+    {
+        boost::array<T, 0> a = {};
+
+        {
+            T* p2 = a.begin();
+            T* p3 = a.end();
+
+            BOOST_TEST_EQ( p2, p3 );
+        }
+
+        {
+            T const* p2 = a.cbegin();
+            T const* p3 = a.cend();
+
+            BOOST_TEST_EQ( p2, p3 );
+        }
+    }
+
+    {
+        boost::array<T, 0> const a = {};
+
+        {
+            T const* p2 = a.begin();
+            T const* p3 = a.end();
+
+            BOOST_TEST_EQ( p2, p3 );
+        }
+
+        {
+            T const* p2 = a.cbegin();
+            T const* p3 = a.cend();
+
+            BOOST_TEST_EQ( p2, p3 );
+        }
+    }
+}
+
+int main()
+{
+    // test<int, 0>();
+    test<int, 1>();
+    test<int, 7>();
+
+    // test<int const, 0>();
+    test<int const, 1>();
+    test<int const, 7>();
+
+    test2<int>();
+
+    return boost::report_errors();
+}