1 files changed, 127 insertions, 0 deletions
diff --git a/test/std/strings/string.view/string.view.ops/compare.pointer.pass.cpp b/test/std/strings/string.view/string.view.ops/compare.pointer.pass.cpp
new file mode 100644
index 0000000000000..eb6eb1e97ef5b
--- /dev/null
+++ b/test/std/strings/string.view/string.view.ops/compare.pointer.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <string_view>
+
+// constexpr int compare(const charT* s) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.hpp"
+
+int sign ( int x ) { return x > 0 ? 1 : ( x < 0 ? -1 : 0 ); }
+
+template<typename CharT>
+void test1 ( std::basic_string_view<CharT> sv1, const CharT *s, int expected ) {
+    assert ( sign( sv1.compare(s)) == sign(expected));
+}
+
+template<typename CharT>
+void
+test( const CharT *s1, const CharT *s2, int expected)
+{
+    typedef std::basic_string_view<CharT> string_view_t;
+    string_view_t sv1 ( s1 );
+    test1 ( sv1, s2, expected );
+}
+
+int main()
+{
+    {
+    test("", "", 0);
+    test("", "abcde", -5);
+    test("", "abcdefghij", -10);
+    test("", "abcdefghijklmnopqrst", -20);
+    test("abcde", "", 5);
+    test("abcde", "abcde", 0);
+    test("abcde", "abcdefghij", -5);
+    test("abcde", "abcdefghijklmnopqrst", -15);
+    test("abcdefghij", "", 10);
+    test("abcdefghij", "abcde", 5);
+    test("abcdefghij", "abcdefghij", 0);
+    test("abcdefghij", "abcdefghijklmnopqrst", -10);
+    test("abcdefghijklmnopqrst", "", 20);
+    test("abcdefghijklmnopqrst", "abcde", 15);
+    test("abcdefghijklmnopqrst", "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", "abcdefghijklmnopqrst", 0);
+    }
+
+    {
+    test(L"", L"", 0);
+    test(L"", L"abcde", -5);
+    test(L"", L"abcdefghij", -10);
+    test(L"", L"abcdefghijklmnopqrst", -20);
+    test(L"abcde", L"", 5);
+    test(L"abcde", L"abcde", 0);
+    test(L"abcde", L"abcdefghij", -5);
+    test(L"abcde", L"abcdefghijklmnopqrst", -15);
+    test(L"abcdefghij", L"", 10);
+    test(L"abcdefghij", L"abcde", 5);
+    test(L"abcdefghij", L"abcdefghij", 0);
+    test(L"abcdefghij", L"abcdefghijklmnopqrst", -10);
+    test(L"abcdefghijklmnopqrst", L"", 20);
+    test(L"abcdefghijklmnopqrst", L"abcde", 15);
+    test(L"abcdefghijklmnopqrst", L"abcdefghij", 10);
+    test(L"abcdefghijklmnopqrst", L"abcdefghijklmnopqrst", 0);
+    }
+
+#if TEST_STD_VER >= 11
+    {
+    test(U"", U"", 0);
+    test(U"", U"abcde", -5);
+    test(U"", U"abcdefghij", -10);
+    test(U"", U"abcdefghijklmnopqrst", -20);
+    test(U"abcde", U"", 5);
+    test(U"abcde", U"abcde", 0);
+    test(U"abcde", U"abcdefghij", -5);
+    test(U"abcde", U"abcdefghijklmnopqrst", -15);
+    test(U"abcdefghij", U"", 10);
+    test(U"abcdefghij", U"abcde", 5);
+    test(U"abcdefghij", U"abcdefghij", 0);
+    test(U"abcdefghij", U"abcdefghijklmnopqrst", -10);
+    test(U"abcdefghijklmnopqrst", U"", 20);
+    test(U"abcdefghijklmnopqrst", U"abcde", 15);
+    test(U"abcdefghijklmnopqrst", U"abcdefghij", 10);
+    test(U"abcdefghijklmnopqrst", U"abcdefghijklmnopqrst", 0);
+    }
+
+    {
+    test(u"", u"", 0);
+    test(u"", u"abcde", -5);
+    test(u"", u"abcdefghij", -10);
+    test(u"", u"abcdefghijklmnopqrst", -20);
+    test(u"abcde", u"", 5);
+    test(u"abcde", u"abcde", 0);
+    test(u"abcde", u"abcdefghij", -5);
+    test(u"abcde", u"abcdefghijklmnopqrst", -15);
+    test(u"abcdefghij", u"", 10);
+    test(u"abcdefghij", u"abcde", 5);
+    test(u"abcdefghij", u"abcdefghij", 0);
+    test(u"abcdefghij", u"abcdefghijklmnopqrst", -10);
+    test(u"abcdefghijklmnopqrst", u"", 20);
+    test(u"abcdefghijklmnopqrst", u"abcde", 15);
+    test(u"abcdefghijklmnopqrst", u"abcdefghij", 10);
+    test(u"abcdefghijklmnopqrst", u"abcdefghijklmnopqrst", 0);
+    }
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+    static_assert ( sv1.compare("") == 0, "" );
+    static_assert ( sv1.compare("abcde") == -1, "" );
+    static_assert ( sv2.compare("") == 1, "" );
+    static_assert ( sv2.compare("abcde") == 0, "" );
+    }
+#endif
+}