Implement std::string_view as described in http://wg21.link/P0254R1. Reviewed as https://reviews.llvm.org/D21459

llvm-svn: 276238

1 files changed, 50 insertions, 0 deletions

diff --git a/libcxx/test/std/strings/string.view/string.view.comparison/ople.string_view.string.pass.cpp b/libcxx/test/std/strings/string.view/string.view.comparison/ople.string_view.string.pass.cpp
new file mode 100644
index 00000000000..092bc23b1c1
--- /dev/null
+++ b/libcxx/test/std/strings/string.view/string.view.comparison/ople.string_view.string.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator<=(const basic_string<charT,traits,Allocator>& lhs,
+//                   basic_string_view<charT,traits> rhs);
+//   bool operator<=(basic_string_view<charT,traits> lhs,
+//            const basic_string<charT,traits,Allocator>&  rhs);
+
+#include <string_view>
+#include <cassert>
+
+template <class S>
+void
+test(const S& lhs, const typename S::value_type* rhs, bool x, bool y)
+{
+    assert((lhs <= rhs) == x);
+    assert((rhs <= lhs) == y);
+}
+
+int main()
+{
+    {
+    typedef std::string_view S;
+    test(S(""), "", true, true);
+    test(S(""), "abcde", true, false);
+    test(S(""), "abcdefghij", true, false);
+    test(S(""), "abcdefghijklmnopqrst", true, false);
+    test(S("abcde"), "", false, true);
+    test(S("abcde"), "abcde", true, true);
+    test(S("abcde"), "abcdefghij", true, false);
+    test(S("abcde"), "abcdefghijklmnopqrst", true, false);
+    test(S("abcdefghij"), "", false, true);
+    test(S("abcdefghij"), "abcde", false, true);
+    test(S("abcdefghij"), "abcdefghij", true, true);
+    test(S("abcdefghij"), "abcdefghijklmnopqrst", true, false);
+    test(S("abcdefghijklmnopqrst"), "", false, true);
+    test(S("abcdefghijklmnopqrst"), "abcde", false, true);
+    test(S("abcdefghijklmnopqrst"), "abcdefghij", false, true);
+    test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", true, true);
+    }
+}