diff --git a/test/Jamfile.v2 b/test/Jamfile.v2
index fcd33ea..feb2011 100644
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -260,6 +260,7 @@ run sv_ends_with_test.cpp ;
 run sv_find_test.cpp ;
 run sv_rfind_test.cpp ;
 run sv_find_first_of_test.cpp ;
+run sv_contains_test.cpp ;
 
 use-project /boost/core/swap : ./swap ;
 build-project ./swap ;
diff --git a/test/sv_contains_test.cpp b/test/sv_contains_test.cpp
new file mode 100644
index 0000000..bb63491
--- /dev/null
+++ b/test/sv_contains_test.cpp
@@ -0,0 +1,71 @@
+// Copyright 2021 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/core/string_view.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <cstddef>
+
+int main()
+{
+    {
+        boost::core::string_view sv( "" );
+
+        BOOST_TEST( sv.contains( boost::core::string_view() ) );
+
+        BOOST_TEST( sv.contains( boost::core::string_view( "" ) ) );
+        BOOST_TEST( !sv.contains( boost::core::string_view( "1" ) ) );
+
+        BOOST_TEST( !sv.contains( '1' ) );
+
+        BOOST_TEST( sv.contains( "" ) );
+        BOOST_TEST( !sv.contains( "1" ) );
+    }
+
+    {
+        boost::core::string_view sv( "123123" );
+
+        BOOST_TEST( sv.contains( boost::core::string_view() ) );
+        BOOST_TEST( sv.contains( boost::core::string_view( "" ) ) );
+
+        BOOST_TEST( sv.contains( boost::core::string_view( "1" ) ) );
+        BOOST_TEST( sv.contains( boost::core::string_view( "2" ) ) );
+        BOOST_TEST( sv.contains( boost::core::string_view( "3" ) ) );
+        BOOST_TEST( !sv.contains( boost::core::string_view( "4" ) ) );
+
+        BOOST_TEST( sv.contains( boost::core::string_view( "12" ) ) );
+        BOOST_TEST( sv.contains( boost::core::string_view( "23" ) ) );
+        BOOST_TEST( !sv.contains( boost::core::string_view( "34" ) ) );
+        BOOST_TEST( !sv.contains( boost::core::string_view( "21" ) ) );
+
+        BOOST_TEST( sv.contains( '1' ) );
+        BOOST_TEST( sv.contains( '2' ) );
+        BOOST_TEST( sv.contains( '3' ) );
+        BOOST_TEST( !sv.contains( '4' ) );
+
+        BOOST_TEST( sv.contains( "" ) );
+
+        BOOST_TEST( sv.contains( "1" ) );
+        BOOST_TEST( sv.contains( "2" ) );
+        BOOST_TEST( sv.contains( "3" ) );
+        BOOST_TEST( !sv.contains( "4" ) );
+
+        BOOST_TEST( sv.contains( "12" ) );
+        BOOST_TEST( sv.contains( "23" ) );
+        BOOST_TEST( !sv.contains( "34" ) );
+        BOOST_TEST( !sv.contains( "21" ) );
+
+        BOOST_TEST( sv.contains( "123" ) );
+        BOOST_TEST( !sv.contains( "234" ) );
+        BOOST_TEST( sv.contains( "231" ) );
+        BOOST_TEST( !sv.contains( "321" ) );
+
+        BOOST_TEST( !sv.contains( "1234" ) );
+        BOOST_TEST( sv.contains( "1231" ) );
+
+        BOOST_TEST( sv.contains( "123123" ) );
+        BOOST_TEST( !sv.contains( "1231231" ) );
+    }
+
+    return boost::report_errors();
+}