Add sp_ostream_test, ip_ostream_test, lsp_ostream_test

test/sp_ostream_test.cpp

@@ -0,0 +1,24 @@
+// Copyright 2025 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/shared_ptr.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <sstream>
+
+template<class T> std::string to_string( T const& t )
+{
+    std::ostringstream os;
+    os << t;
+    return os.str();
+}
+
+int main()
+{
+    boost::shared_ptr<int> p1, p2( new int );
+
+    BOOST_TEST_EQ( to_string( p1 ), to_string( p1.get() ) );
+    BOOST_TEST_EQ( to_string( p2 ), to_string( p2.get() ) );
+
+    return boost::report_errors();
+}