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84 lines
3.0 KiB
Plaintext
84 lines
3.0 KiB
Plaintext
// Copyright 2024 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// This is a "No Compile Test" suite.
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// http://dev.chromium.org/developers/testing/no-compile-tests
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#include "base/strings/cstring_view.h"
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#include <vector>
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namespace base {
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namespace {
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void WontCompileTypeMismatch() {
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cstring_view(u"123"); // expected-error {{no matching conversion}}
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cstring_view(U"123"); // expected-error {{no matching conversion}}
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u16cstring_view("123"); // expected-error {{no matching conversion}}
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u16cstring_view(U"123"); // expected-error {{no matching conversion}}
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u32cstring_view("123"); // expected-error {{no matching conversion}}
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u32cstring_view(u"123"); // expected-error {{no matching conversion}}
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#if BUILDFLAG(IS_WIN)
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cstring_view(L""); // expected-error {{no matching conversion}}
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u16cstring_view(L""); // expected-error {{no matching conversion}}
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u32cstring_view(L""); // expected-error {{no matching conversion}}
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wcstring_view(""); // expected-error {{no matching conversion}}
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wcstring_view(u""); // expected-error {{no matching conversion}}
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wcstring_view(U""); // expected-error {{no matching conversion}}
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#endif
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}
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void WontCompileNoNulInArray() {
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const char abc_good[] = {'a', 'b', 'c', '\0'};
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auto v1 = cstring_view(abc_good); // No error, NUL exists.
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#if defined(__clang__)
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const char abc_bad[] = {'a', 'b', 'c'};
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const char after = 'd';
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auto v2 = cstring_view(abc_bad); // expected-error {{no matching conversion}}
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#endif
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}
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void WontCompileNullptr() {
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auto v = cstring_view(nullptr); // expected-error {{no matching conversion}}
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}
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void WontCompileCompareTypeMismatch() {
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// TODO(crbug.com/330213589): This should be testable with a static_assert on
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// a concept.
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(void)(cstring_view() == u16cstring_view()); // expected-error {{invalid operands to binary expression}}
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(void)(cstring_view() <=> u16cstring_view()); // expected-error {{invalid operands to binary expression}}
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}
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void WontCompileSwapTypeMismatch() {
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auto a = cstring_view("8");
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auto b = u16cstring_view(u"16");
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a.swap(b); // expected-error {{cannot bind to a value of unrelated type}}
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}
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void WontCompileStartsEndWithMismatch() {
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u16cstring_view(u"abc").starts_with("ab"); // expected-error {{no matching member function}}
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u16cstring_view(u"abc").ends_with("ab"); // expected-error {{no matching member function}}
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}
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void WontCompileDanglingInput() {
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// TODO: construct from string.
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// auto v1 = cstring_view(std::string("abc"));
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auto v2 = UNSAFE_BUFFERS(cstring_view( // expected-error {{object backing the pointer will be destroyed at the end of the full-expression}}
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std::vector<char>{'a', 'b', 'c', '\0'}.data(),
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3u));
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auto v3 = cstring_view();
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{
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std::vector<char> abc = {'a', 'b', 'c', '\0'};
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v3 = UNSAFE_BUFFERS(cstring_view(
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abc.data(), 3u)); // This should make a lifetime error but doesn't. :(
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}
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}
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} // namespace
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} // namespace base
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