From a121d5a000c2fd6616182bf1b8fef131262e0a69 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Sat, 9 Oct 2021 17:09:23 +0300
Subject: [PATCH] Add sv_lt_test

---
 test/Jamfile.v2     |  1 +
 test/sv_lt_test.cpp | 95 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 96 insertions(+)
 create mode 100644 test/sv_lt_test.cpp

diff --git a/test/Jamfile.v2 b/test/Jamfile.v2
index 170b53f..7286df2 100644
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -265,6 +265,7 @@ run sv_find_first_not_of_test.cpp ;
 run sv_find_last_not_of_test.cpp ;
 run sv_contains_test.cpp ;
 run sv_eq_test.cpp ;
+run sv_lt_test.cpp ;
 
 use-project /boost/core/swap : ./swap ;
 build-project ./swap ;
diff --git a/test/sv_lt_test.cpp b/test/sv_lt_test.cpp
new file mode 100644
index 0000000..e86148b
--- /dev/null
+++ b/test/sv_lt_test.cpp
@@ -0,0 +1,95 @@
+// 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>
+#if !defined(BOOST_NO_CXX17_HDR_STRING_VIEW)
+# include <string_view>
+#endif
+
+#define TEST_LT(x, y) \
+    BOOST_TEST_LT(x, y); \
+    BOOST_TEST_LE(x, y); \
+    BOOST_TEST_NE(x, y); \
+    BOOST_TEST_NOT((x) == (y)); \
+    BOOST_TEST_NOT((x) >= (y)); \
+    BOOST_TEST_NOT((x) > (y)); \
+    BOOST_TEST_GT(y, x); \
+    BOOST_TEST_GE(y, x); \
+    BOOST_TEST_NOT((y) < (x)); \
+    BOOST_TEST_NOT((y) <= (x));
+
+int main()
+{
+    std::size_t const npos = boost::core::string_view::npos;
+
+    {
+        boost::core::string_view sv0( "" );
+        boost::core::string_view sv1( "12" );
+        boost::core::string_view sv2( "122" );
+        boost::core::string_view sv3( "123" );
+        boost::core::string_view sv4( "124" );
+        boost::core::string_view sv5( "1234" );
+
+        TEST_LT( sv0, sv1 );
+        TEST_LT( sv1, sv2 );
+        TEST_LT( sv2, sv3 );
+        TEST_LT( sv3, sv4 );
+        TEST_LT( sv3, sv5 );
+        TEST_LT( sv5, sv4 );
+
+        TEST_LT( sv0, std::string( "12" ) );
+        TEST_LT( sv1, std::string( "122" ) );
+        TEST_LT( sv2, std::string( "123" ) );
+        TEST_LT( sv3, std::string( "124" ) );
+        TEST_LT( sv3, std::string( "1234" ) );
+        TEST_LT( sv5, std::string( "124" ) );
+
+        TEST_LT( sv0, "12" );
+        TEST_LT( sv1, "122" );
+        TEST_LT( sv2, "123" );
+        TEST_LT( sv3, "124" );
+        TEST_LT( sv3, "1234" );
+        TEST_LT( sv5, "124" );
+
+#if !defined(BOOST_NO_CXX17_HDR_STRING_VIEW)
+
+        TEST_LT( sv0, std::string_view( "12" ) );
+        TEST_LT( sv1, std::string_view( "122" ) );
+        TEST_LT( sv2, std::string_view( "123" ) );
+        TEST_LT( sv3, std::string_view( "124" ) );
+        TEST_LT( sv3, std::string_view( "1234" ) );
+        TEST_LT( sv5, std::string_view( "124" ) );
+
+#endif
+
+        TEST_LT( std::string( "" ), sv1 );
+        TEST_LT( std::string( "12" ), sv2 );
+        TEST_LT( std::string( "122" ), sv3 );
+        TEST_LT( std::string( "123" ), sv4 );
+        TEST_LT( std::string( "123" ), sv5 );
+        TEST_LT( std::string( "1234" ), sv4 );
+
+        TEST_LT( "", sv1 );
+        TEST_LT( "12", sv2 );
+        TEST_LT( "122", sv3 );
+        TEST_LT( "123", sv4 );
+        TEST_LT( "123", sv5 );
+        TEST_LT( "1234", sv4 );
+
+#if !defined(BOOST_NO_CXX17_HDR_STRING_VIEW)
+
+        TEST_LT( std::string_view( "" ), sv1 );
+        TEST_LT( std::string_view( "12" ), sv2 );
+        TEST_LT( std::string_view( "122" ), sv3 );
+        TEST_LT( std::string_view( "123" ), sv4 );
+        TEST_LT( std::string_view( "123" ), sv5 );
+        TEST_LT( std::string_view( "1234" ), sv4 );
+
+#endif
+    }
+
+    return boost::report_errors();
+}