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Problem: - Raw loops are often written to validate that all values in a container meet a predicate, but raw loops are not as expressive as functions implementing well-named algorithms and are error-prone. Solution: - Implement a very generic form of `all_of`.
43 lines
1.9 KiB
C++
43 lines
1.9 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/TestSuite.h>
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#include <AK/AllOf.h>
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#include <AK/Array.h>
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TEST_CASE(should_determine_if_predicate_applies_to_all_elements_in_container)
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{
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constexpr AK::Array<int, 10> a {};
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static_assert(AK::all_of(a.begin(), a.end(), [](auto elem) { return elem == 0; }));
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static_assert(!AK::all_of(a.begin(), a.end(), [](auto elem) { return elem == 1; }));
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EXPECT(AK::all_of(a.begin(), a.end(), [](auto elem) { return elem == 0; }));
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EXPECT(!AK::all_of(a.begin(), a.end(), [](auto elem) { return elem == 1; }));
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}
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TEST_MAIN(AllOf)
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