0be1883c36
Around half of the tests are based on the tests Arthur O'Dwyer's original implementation of std::flat_map, with modifications and removals. partially implement #105190
98 lines
4.2 KiB
C++
98 lines
4.2 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, c++20
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// <flat_map>
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// Test CTAD on cases where deduction should fail.
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#include <flat_map>
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#include <functional>
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#include <memory>
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#include <utility>
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#include <vector>
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struct NotAnAllocator {
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friend bool operator<(NotAnAllocator, NotAnAllocator) { return false; }
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};
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using P = std::pair<int, long>;
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using PC = std::pair<const int, long>;
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void test() {
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{
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// cannot deduce Key and T from just (KeyContainer), even if it's a container of pairs
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std::vector<std::pair<int, int>> v;
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std::flat_map s(v);
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_map'}}}}
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}
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{
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// cannot deduce Key and T from just (KeyContainer, Allocator)
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std::vector<int> v;
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std::flat_map s(v, std::allocator<std::pair<const int, int>>());
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_map'}}}}
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}
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{
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// cannot deduce Key and T from nothing
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std::flat_map m;
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_map'}}}}
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}
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{
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// cannot deduce Key and T from just (Compare)
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std::flat_map m(std::less<int>{});
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_map'}}}}
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}
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{
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// cannot deduce Key and T from just (Compare, Allocator)
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std::flat_map m(std::less<int>{}, std::allocator<PC>{});
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_map'}}}}
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}
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{
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// cannot deduce Key and T from just (Allocator)
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std::flat_map m(std::allocator<PC>{});
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_map'}}}}
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}
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{
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// cannot convert from some arbitrary unrelated type
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NotAnAllocator a;
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std::flat_map m(a);
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_map'}}}}
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}
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{
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// cannot deduce that the inner braced things should be std::pair and not something else
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std::flat_map m{{1, 1L}, {2, 2L}, {3, 3L}};
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_map'}}}}
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}
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{
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// cannot deduce that the inner braced things should be std::pair and not something else
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std::flat_map m({{1, 1L}, {2, 2L}, {3, 3L}}, std::less<int>());
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_map'}}}}
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}
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{
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// cannot deduce that the inner braced things should be std::pair and not something else
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std::flat_map m({{1, 1L}, {2, 2L}, {3, 3L}}, std::less<int>(), std::allocator<PC>());
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_map'}}}}
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}
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{
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// cannot deduce that the inner braced things should be std::pair and not something else
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std::flat_map m({{1, 1L}, {2, 2L}, {3, 3L}}, std::allocator<PC>());
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_map'}}}}
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}
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{
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// since we have parens, not braces, this deliberately does not find the initializer_list constructor
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std::flat_map m(P{1, 1L});
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_map'}}}}
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}
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{
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// since we have parens, not braces, this deliberately does not find the initializer_list constructor
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std::flat_map m(PC{1, 1L});
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_map'}}}}
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}
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}
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