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Diffstat (limited to 'test/std/strings/string.view/string.view.template/starts_with.string_view.pass.cpp')
-rw-r--r-- | test/std/strings/string.view/string.view.template/starts_with.string_view.pass.cpp | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/test/std/strings/string.view/string.view.template/starts_with.string_view.pass.cpp b/test/std/strings/string.view/string.view.template/starts_with.string_view.pass.cpp new file mode 100644 index 000000000..7501926af --- /dev/null +++ b/test/std/strings/string.view/string.view.template/starts_with.string_view.pass.cpp @@ -0,0 +1,104 @@ +//===----------------------------------------------------------------------===// +// +// 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. +// +//===----------------------------------------------------------------------===// +// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17 + +// <string_view> + +// constexpr bool starts_with(string_view x) const noexcept; + +#include <string_view> +#include <cassert> + +#include "test_macros.h" +#include "constexpr_char_traits.hpp" + +int main() +{ + { + typedef std::string_view SV; + const char *s = "abcde"; + SV sv0 {}; + SV sv1 { s, 1 }; + SV sv2 { s, 2 }; + SV sv3 { s, 3 }; + SV sv4 { s, 4 }; + SV sv5 { s, 5 }; + SV svNot {"def", 3 }; + + ASSERT_NOEXCEPT(sv0.starts_with(sv0)); + + assert ( sv0.starts_with(sv0)); + assert (!sv0.starts_with(sv1)); + + assert ( sv1.starts_with(sv0)); + assert ( sv1.starts_with(sv1)); + assert (!sv1.starts_with(sv2)); + assert (!sv1.starts_with(sv3)); + assert (!sv1.starts_with(sv4)); + assert (!sv1.starts_with(sv5)); + assert (!sv1.starts_with(svNot)); + + assert ( sv2.starts_with(sv0)); + assert ( sv2.starts_with(sv1)); + assert ( sv2.starts_with(sv2)); + assert (!sv2.starts_with(sv3)); + assert (!sv2.starts_with(sv4)); + assert (!sv2.starts_with(sv5)); + assert (!sv2.starts_with(svNot)); + + assert ( svNot.starts_with(sv0)); + assert (!svNot.starts_with(sv1)); + assert (!svNot.starts_with(sv2)); + assert (!svNot.starts_with(sv3)); + assert (!svNot.starts_with(sv4)); + assert (!svNot.starts_with(sv5)); + assert ( svNot.starts_with(svNot)); + } + +#if TEST_STD_VER > 11 + { + typedef std::basic_string_view<char, constexpr_char_traits<char>> SV; + constexpr const char *s = "abcde"; + constexpr SV sv0 {}; + constexpr SV sv1 { s, 1 }; + constexpr SV sv2 { s, 2 }; + constexpr SV sv3 { s, 3 }; + constexpr SV sv4 { s, 4 }; + constexpr SV sv5 { s, 5 }; + constexpr SV svNot {"def", 3 }; + + static_assert ( sv0.starts_with(sv0), "" ); + static_assert (!sv0.starts_with(sv1), "" ); + + static_assert ( sv1.starts_with(sv0), "" ); + static_assert ( sv1.starts_with(sv1), "" ); + static_assert (!sv1.starts_with(sv2), "" ); + static_assert (!sv1.starts_with(sv3), "" ); + static_assert (!sv1.starts_with(sv4), "" ); + static_assert (!sv1.starts_with(sv5), "" ); + static_assert (!sv1.starts_with(svNot), "" ); + + static_assert ( sv2.starts_with(sv0), "" ); + static_assert ( sv2.starts_with(sv1), "" ); + static_assert ( sv2.starts_with(sv2), "" ); + static_assert (!sv2.starts_with(sv3), "" ); + static_assert (!sv2.starts_with(sv4), "" ); + static_assert (!sv2.starts_with(sv5), "" ); + static_assert (!sv2.starts_with(svNot), "" ); + + static_assert ( svNot.starts_with(sv0), "" ); + static_assert (!svNot.starts_with(sv1), "" ); + static_assert (!svNot.starts_with(sv2), "" ); + static_assert (!svNot.starts_with(sv3), "" ); + static_assert (!svNot.starts_with(sv4), "" ); + static_assert (!svNot.starts_with(sv5), "" ); + static_assert ( svNot.starts_with(svNot), "" ); + } +#endif +} |