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Added ElementsAre and UnorderedElementsAre (#2377)
Co-authored-by: Garz4 <[email protected]> Co-authored-by: Martin Hořeňovský <[email protected]>
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,136 @@ | ||
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| // Copyright Catch2 Authors | ||
| // Distributed under the Boost Software License, Version 1.0. | ||
| // (See accompanying file LICENSE.txt or copy at | ||
| // https://www.boost.org/LICENSE_1_0.txt) | ||
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| // SPDX-License-Identifier: BSL-1.0 | ||
| #ifndef CATCH_MATCHERS_RANGE_EQUALS_HPP_INCLUDED | ||
| #define CATCH_MATCHERS_RANGE_EQUALS_HPP_INCLUDED | ||
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| #include <algorithm> | ||
| #include <catch2/matchers/catch_matchers_templated.hpp> | ||
| #include <utility> | ||
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| namespace Catch { | ||
| namespace Matchers { | ||
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| /** | ||
| * Matcher for checking that an element contains the same | ||
| * elements in the same order | ||
| */ | ||
| template <typename TargetRangeLike, typename Equality> | ||
| class RangeEqualsMatcher final : public MatcherGenericBase { | ||
| TargetRangeLike m_desired; | ||
| Equality m_predicate; | ||
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| public: | ||
| template <typename TargetRangeLike2, typename Equality2> | ||
| RangeEqualsMatcher( TargetRangeLike2&& range, | ||
| Equality2&& predicate ): | ||
| m_desired( CATCH_FORWARD( range ) ), | ||
| m_predicate( CATCH_FORWARD( predicate ) ) {} | ||
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| template <typename RangeLike> | ||
| bool match( RangeLike&& rng ) const { | ||
| using std::begin; | ||
| using std::end; | ||
| return std::equal( begin(m_desired), | ||
| end(m_desired), | ||
| begin(rng), | ||
| end(rng), | ||
| m_predicate ); | ||
| } | ||
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| std::string describe() const override { | ||
| return "elements are " + Catch::Detail::stringify( m_desired ); | ||
| } | ||
| }; | ||
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| /** | ||
| * Matcher for checking that an element contains the same | ||
| * elements (but not necessarily in the same order) | ||
| */ | ||
| template <typename TargetRangeLike, typename Equality> | ||
| class UnorderedRangeEqualsMatcher final : public MatcherGenericBase { | ||
| TargetRangeLike m_desired; | ||
| Equality m_predicate; | ||
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| public: | ||
| template <typename TargetRangeLike2, typename Equality2> | ||
| UnorderedRangeEqualsMatcher( TargetRangeLike2&& range, | ||
| Equality2&& predicate ): | ||
| m_desired( CATCH_FORWARD( range ) ), | ||
| m_predicate( CATCH_FORWARD( predicate ) ) {} | ||
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| template <typename RangeLike> | ||
| bool match( RangeLike&& rng ) const { | ||
| using std::begin; | ||
| using std::end; | ||
| return std::is_permutation( begin( m_desired ), | ||
| end( m_desired ), | ||
| begin( rng ), | ||
| end( rng ), | ||
| m_predicate ); | ||
| } | ||
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| std::string describe() const override { | ||
| return "unordered elements are " + | ||
| ::Catch::Detail::stringify( m_desired ); | ||
| } | ||
| }; | ||
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| /** | ||
| * Creates a matcher that checks if all elements in a range are equal | ||
| * to all elements in another range. | ||
| * | ||
| * Uses `std::equal_to` to do the comparison | ||
| */ | ||
| template <typename RangeLike> | ||
| std::enable_if_t<!Detail::is_matcher<RangeLike>::value, | ||
| RangeEqualsMatcher<RangeLike, std::equal_to<>>> | ||
| RangeEquals( RangeLike&& range ) { | ||
| return { CATCH_FORWARD( range ), std::equal_to<>{} }; | ||
| } | ||
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| /** | ||
| * Creates a matcher that checks if all elements in a range are equal | ||
| * to all elements in another range. | ||
| * | ||
| * Uses to provided predicate `predicate` to do the comparisons | ||
| */ | ||
| template <typename RangeLike, typename Equality> | ||
| RangeEqualsMatcher<RangeLike, Equality> | ||
| RangeEquals( RangeLike&& range, Equality&& predicate ) { | ||
| return { CATCH_FORWARD( range ), CATCH_FORWARD( predicate ) }; | ||
| } | ||
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| /** | ||
| * Creates a matcher that checks if all elements in a range are equal | ||
| * to all elements in another range, in some permutation | ||
| * | ||
| * Uses `std::equal_to` to do the comparison | ||
| */ | ||
| template <typename RangeLike> | ||
| std::enable_if_t< | ||
| !Detail::is_matcher<RangeLike>::value, | ||
| UnorderedRangeEqualsMatcher<RangeLike, std::equal_to<>>> | ||
| UnorderedRangeEquals( RangeLike&& range ) { | ||
| return { CATCH_FORWARD( range ), std::equal_to<>{} }; | ||
| } | ||
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| /** | ||
| * Creates a matcher that checks if all elements in a range are equal | ||
| * to all elements in another range, in some permuation. | ||
| * | ||
| * Uses to provided predicate `predicate` to do the comparisons | ||
| */ | ||
| template <typename RangeLike, typename Equality> | ||
| UnorderedRangeEqualsMatcher<RangeLike, Equality> | ||
| UnorderedRangeEquals( RangeLike&& range, Equality&& predicate ) { | ||
| return { CATCH_FORWARD( range ), CATCH_FORWARD( predicate ) }; | ||
| } | ||
| } // namespace Matchers | ||
| } // namespace Catch | ||
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| #endif // CATCH_MATCHERS_RANGE_EQUALS_HPP_INCLUDED |
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