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/*
* Created by Phil Nash on 21/02/2017.
* Copyright (c) 2017 Two Blue Cubes Ltd. All rights reserved.
*
* Distributed under the Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*/
#ifndef TWOBLUECUBES_CATCH_MATCHERS_VECTOR_H_INCLUDED
#define TWOBLUECUBES_CATCH_MATCHERS_VECTOR_H_INCLUDED
#include "catch_matchers.h"
#include "catch_approx.h"
#include <algorithm>
namespace Catch {
namespace Matchers {
namespace Vector {
template<typename T, typename Alloc>
struct ContainsElementMatcher : MatcherBase<std::vector<T, Alloc>> {
ContainsElementMatcher(T const &comparator) : m_comparator( comparator) {}
bool match(std::vector<T, Alloc> const &v) const override {
for (auto const& el : v) {
if (el == m_comparator) {
return true;
}
}
return false;
}
std::string describe() const override {
return "Contains: " + ::Catch::Detail::stringify( m_comparator );
}
T const& m_comparator;
};
template<typename T, typename AllocComp, typename AllocMatch>
struct ContainsMatcher : MatcherBase<std::vector<T, AllocMatch>> {
ContainsMatcher(std::vector<T, AllocComp> const &comparator) : m_comparator( comparator ) {}
bool match(std::vector<T, AllocMatch> const &v) const override {
// !TBD: see note in EqualsMatcher
if (m_comparator.size() > v.size())
return false;
for (auto const& comparator : m_comparator) {
auto present = false;
for (const auto& el : v) {
if (el == comparator) {
present = true;
break;
}
}
if (!present) {
return false;
}
}
return true;
}
std::string describe() const override {
return "Contains: " + ::Catch::Detail::stringify( m_comparator );
}
std::vector<T, AllocComp> const& m_comparator;
};
template<typename T, typename AllocComp, typename AllocMatch>
struct EqualsMatcher : MatcherBase<std::vector<T, AllocMatch>> {
EqualsMatcher(std::vector<T, AllocComp> const &comparator) : m_comparator( comparator ) {}
bool match(std::vector<T, AllocMatch> const &v) const override {
// !TBD: This currently works if all elements can be compared using !=
// - a more general approach would be via a compare template that defaults
// to using !=. but could be specialised for, e.g. std::vector<T, Alloc> etc
// - then just call that directly
if (m_comparator.size() != v.size())
return false;
for (std::size_t i = 0; i < v.size(); ++i)
if (m_comparator[i] != v[i])
return false;
return true;
}
std::string describe() const override {
return "Equals: " + ::Catch::Detail::stringify( m_comparator );
}
std::vector<T, AllocComp> const& m_comparator;
};
template<typename T, typename AllocComp, typename AllocMatch>
struct ApproxMatcher : MatcherBase<std::vector<T, AllocMatch>> {
ApproxMatcher(std::vector<T, AllocComp> const& comparator) : m_comparator( comparator ) {}
bool match(std::vector<T, AllocMatch> const &v) const override {
if (m_comparator.size() != v.size())
return false;
for (std::size_t i = 0; i < v.size(); ++i)
if (m_comparator[i] != approx(v[i]))
return false;
return true;
}
std::string describe() const override {
return "is approx: " + ::Catch::Detail::stringify( m_comparator );
}
template <typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
ApproxMatcher& epsilon( T const& newEpsilon ) {
approx.epsilon(newEpsilon);
return *this;
}
template <typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
ApproxMatcher& margin( T const& newMargin ) {
approx.margin(newMargin);
return *this;
}
template <typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
ApproxMatcher& scale( T const& newScale ) {
approx.scale(newScale);
return *this;
}
std::vector<T, AllocComp> const& m_comparator;
mutable Catch::Detail::Approx approx = Catch::Detail::Approx::custom();
};
template<typename T, typename AllocComp, typename AllocMatch>
struct UnorderedEqualsMatcher : MatcherBase<std::vector<T, AllocMatch>> {
UnorderedEqualsMatcher(std::vector<T, AllocComp> const& target) : m_target(target) {}
bool match(std::vector<T, AllocMatch> const& vec) const override {
if (m_target.size() != vec.size()) {
return false;
}
return std::is_permutation(m_target.begin(), m_target.end(), vec.begin());
}
std::string describe() const override {
return "UnorderedEquals: " + ::Catch::Detail::stringify(m_target);
}
private:
std::vector<T, AllocComp> const& m_target;
};
} // namespace Vector
// The following functions create the actual matcher objects.
// This allows the types to be inferred
template<typename T, typename AllocComp = std::allocator<T>, typename AllocMatch = AllocComp>
Vector::ContainsMatcher<T, AllocComp, AllocMatch> Contains( std::vector<T, AllocComp> const& comparator ) {
return Vector::ContainsMatcher<T, AllocComp, AllocMatch>( comparator );
}
template<typename T, typename Alloc = std::allocator<T>>
Vector::ContainsElementMatcher<T, Alloc> VectorContains( T const& comparator ) {
return Vector::ContainsElementMatcher<T, Alloc>( comparator );
}
template<typename T, typename AllocComp = std::allocator<T>, typename AllocMatch = AllocComp>
Vector::EqualsMatcher<T, AllocComp, AllocMatch> Equals( std::vector<T, AllocComp> const& comparator ) {
return Vector::EqualsMatcher<T, AllocComp, AllocMatch>( comparator );
}
template<typename T, typename AllocComp = std::allocator<T>, typename AllocMatch = AllocComp>
Vector::ApproxMatcher<T, AllocComp, AllocMatch> Approx( std::vector<T, AllocComp> const& comparator ) {
return Vector::ApproxMatcher<T, AllocComp, AllocMatch>( comparator );
}
template<typename T, typename AllocComp = std::allocator<T>, typename AllocMatch = AllocComp>
Vector::UnorderedEqualsMatcher<T, AllocComp, AllocMatch> UnorderedEquals(std::vector<T, AllocComp> const& target) {
return Vector::UnorderedEqualsMatcher<T, AllocComp, AllocMatch>( target );
}
} // namespace Matchers
} // namespace Catch
#endif // TWOBLUECUBES_CATCH_MATCHERS_VECTOR_H_INCLUDED
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