Copy string_view tests from libstdc++

[thirdparty/binutils-gdb.git] / gdb / unittests / basic_string_view / operations / find / char / 1.cc

diff --git a/gdb/unittests/basic_string_view/operations/find/char/1.cc b/gdb/unittests/basic_string_view/operations/find/char/1.cc
new file mode 100644 (file)
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+++ b/gdb/unittests/basic_string_view/operations/find/char/1.cc
@@ -0,0 +1,164 @@
+// { dg-options "-std=gnu++17" }
+
+// Copyright (C) 2013-2018 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// basic_string_view find
+
+#include <string_view>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  typedef std::string_view::size_type csize_type;
+  typedef std::string_view::const_reference cref;
+  typedef std::string_view::reference ref;
+  csize_type npos = std::string_view::npos;
+  csize_type csz01, csz02;
+
+  const char str_lit01[] = "mave";
+  const std::string_view str01("mavericks, santa cruz");
+  std::string_view str02(str_lit01);
+  std::string_view str03("s, s");
+  std::string_view str04;
+
+  // size_type find(const string_view&, size_type pos = 0) const;
+  csz01 = str01.find(str01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str01, 4);
+  VERIFY( csz01 == npos );
+  csz01 = str01.find(str02, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str02, 3);
+  VERIFY( csz01 == npos );
+  csz01 = str01.find(str03, 0);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find(str03, 3);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find(str03, 12);
+  VERIFY( csz01 == npos );
+
+  // An empty string_view consists of no characters
+  // therefore it should be found at every point in a string_view,
+  // except beyond the end
+  csz01 = str01.find(str04, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str04, 5);
+  VERIFY( csz01 == 5 );
+  csz01 = str01.find(str04, str01.size());
+  VERIFY( csz01 == str01.size() );
+  csz01 = str01.find(str04, str01.size()+1);
+  VERIFY( csz01 == npos );
+
+  // size_type find(const char* s, size_type pos, size_type n) const;
+  csz01 = str01.find(str_lit01, 0, 3);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str_lit01, 3, 0);
+  VERIFY( csz01 == 3 );
+
+  // size_type find(const char* s, size_type pos = 0) const;
+  csz01 = str01.find(str_lit01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str_lit01, 3);
+  VERIFY( csz01 == npos );
+
+  // size_type find(char c, size_type pos = 0) const;
+  csz01 = str01.find('z');
+  csz02 = str01.size() - 1;
+  VERIFY( csz01 == csz02 );
+  csz01 = str01.find('/');
+  VERIFY( csz01 == npos );
+}
+
+constexpr bool
+test02()
+{
+  typedef std::string_view::size_type csize_type;
+  typedef std::string_view::const_reference cref;
+  typedef std::string_view::reference ref;
+  csize_type npos = std::string_view::npos;
+  csize_type csz01 = 0, csz02 = 0;
+
+  const char str_lit01[] = "mave";
+  const std::string_view str01("mavericks, santa cruz");
+  std::string_view str02(str_lit01);
+  std::string_view str03("s, s");
+  std::string_view str04;
+
+#undef VERIFY
+#define VERIFY(x) if(!(x)) return false
+
+  // size_type find(const string_view&, size_type pos = 0) const;
+  csz01 = str01.find(str01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str01, 4);
+  VERIFY( csz01 == npos );
+  csz01 = str01.find(str02, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str02, 3);
+  VERIFY( csz01 == npos );
+  csz01 = str01.find(str03, 0);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find(str03, 3);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find(str03, 12);
+  VERIFY( csz01 == npos );
+
+  // An empty string_view consists of no characters
+  // therefore it should be found at every point in a string_view,
+  // except beyond the end
+  csz01 = str01.find(str04, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str04, 5);
+  VERIFY( csz01 == 5 );
+  csz01 = str01.find(str04, str01.size());
+  VERIFY( csz01 == str01.size() );
+  csz01 = str01.find(str04, str01.size()+1);
+  VERIFY( csz01 == npos );
+
+  // size_type find(const char* s, size_type pos, size_type n) const;
+  csz01 = str01.find(str_lit01, 0, 3);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str_lit01, 3, 0);
+  VERIFY( csz01 == 3 );
+
+  // size_type find(const char* s, size_type pos = 0) const;
+  csz01 = str01.find(str_lit01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str_lit01, 3);
+  VERIFY( csz01 == npos );
+
+  // size_type find(char c, size_type pos = 0) const;
+  csz01 = str01.find('z');
+  csz02 = str01.size() - 1;
+  VERIFY( csz01 == csz02 );
+  csz01 = str01.find('/');
+  VERIFY( csz01 == npos );
+
+  return true;
+}
+
+
+int
+main()
+{
+  test01();
+  static_assert( test02() );
+
+  return 0;
+}