Add array_convert_test.cpp

test/array_convert_test.cpp

@@ -0,0 +1,38 @@
+// 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, class U, std::size_t N> void test2()
+{
+    boost::array<T, N> a1 = {};
+
+    boost::array<U, N> a2;
+    a2 = a1;
+
+    BOOST_TEST_ALL_EQ( a1.begin(), a1.end(), a2.begin(), a2.end() );
+}
+
+template<class T, class U> void test4()
+{
+    boost::array<T, 4> a1 = { 1, 2, 3, 4 };
+
+    boost::array<U, 4> a2;
+    a2 = a1;
+
+    BOOST_TEST_ALL_EQ( a1.begin(), a1.end(), a2.begin(), a2.end() );
+}
+
+int main()
+{
+    test2<int, long, 0>();
+    test2<int, long, 1>();
+    test2<int, long, 7>();
+
+    test4<int, long>();
+
+    return boost::report_errors();
+}