6e1dcc9335
While doing this, I also found a few tests that were either clearly incorrect (e.g. testing the wrong function) or that lacked basic test coverage like testing std::string itself (e.g. the test was only checking std::basic_string with a custom allocator). In these cases, I did a few conservative drive-by changes. Differential Revision: https://reviews.llvm.org/D140550 Co-authored-by: Brendan Emery <brendan.emery@esrlabs.com>
72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// <string>
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// constexpr bool starts_with(const CharT *x) const;
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#include <string>
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#include <cassert>
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#include "test_macros.h"
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template <class S>
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constexpr void test_string() {
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const char* s = "abcde";
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S s0{};
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S s1{s, 1};
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S s2{s, 2};
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// S s3 { s, 3 };
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// S s4 { s, 4 };
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// S s5 { s, 5 };
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S sNot{"def", 3};
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LIBCPP_ASSERT_NOEXCEPT(s0.starts_with(""));
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assert(s0.starts_with(""));
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assert(!s0.starts_with("a"));
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assert(s1.starts_with(""));
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assert(s1.starts_with("a"));
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assert(!s1.starts_with("ab"));
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assert(!s1.starts_with("abc"));
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assert(!s1.starts_with("abcd"));
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assert(!s1.starts_with("abcde"));
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assert(!s1.starts_with("def"));
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assert(s2.starts_with(""));
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assert(s2.starts_with("a"));
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assert(s2.starts_with("ab"));
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assert(!s2.starts_with("abc"));
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assert(!s2.starts_with("abcd"));
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assert(!s2.starts_with("abcde"));
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assert(!s2.starts_with("def"));
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assert(sNot.starts_with(""));
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assert(!sNot.starts_with("a"));
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assert(!sNot.starts_with("ab"));
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assert(!sNot.starts_with("abc"));
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assert(!sNot.starts_with("abcd"));
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assert(!sNot.starts_with("abcde"));
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assert(sNot.starts_with("def"));
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}
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constexpr bool test() {
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test_string<std::string>();
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return true;
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}
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int main(int, char**) {
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test();
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static_assert(test());
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return 0;
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}
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