fmt/test/mock-allocator.h

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// Formatting library for C++ - mock allocator
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#ifndef FMT_MOCK_ALLOCATOR_H_
#define FMT_MOCK_ALLOCATOR_H_
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#include <assert.h> // assert
#include <stddef.h> // size_t
#include <memory> // std::allocator_traits
#include "gmock/gmock.h"
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template <typename T> class mock_allocator {
public:
mock_allocator() {}
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mock_allocator(const mock_allocator&) {}
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using value_type = T;
MOCK_METHOD(T*, allocate, (size_t));
MOCK_METHOD(void, deallocate, (T*, size_t));
};
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template <typename Allocator> class allocator_ref {
private:
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Allocator* alloc_;
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void move(allocator_ref& other) {
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alloc_ = other.alloc_;
other.alloc_ = nullptr;
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}
public:
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using value_type = typename Allocator::value_type;
explicit allocator_ref(Allocator* alloc = nullptr) : alloc_(alloc) {}
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allocator_ref(const allocator_ref& other) : alloc_(other.alloc_) {}
allocator_ref(allocator_ref&& other) { move(other); }
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allocator_ref& operator=(allocator_ref&& other) {
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assert(this != &other);
move(other);
return *this;
}
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allocator_ref& operator=(const allocator_ref& other) {
alloc_ = other.alloc_;
return *this;
}
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public:
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Allocator* get() const { return alloc_; }
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value_type* allocate(size_t n) {
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return std::allocator_traits<Allocator>::allocate(*alloc_, n);
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}
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void deallocate(value_type* p, size_t n) { alloc_->deallocate(p, n); }
};
#endif // FMT_MOCK_ALLOCATOR_H_