tvl-depot/third_party/immer/test/array_transient/default.cpp

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//
// immer: immutable data structures for C++
// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
//
// This software is distributed under the Boost Software License, Version 1.0.
// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
//
#include <immer/array.hpp>
#include <immer/array_transient.hpp>
#define VECTOR_T ::immer::array
#define VECTOR_TRANSIENT_T ::immer::array_transient
#include "../vector_transient/generic.ipp"
TEST_CASE("array_transient default constructor compiles")
{
immer::array_transient<int> transient;
}
TEST_CASE("array provides mutable data")
{
auto arr = immer::array<int>(10, 0);
CHECK(arr.size() == 10);
auto tr = arr.transient();
CHECK(tr.data() == arr.data());
auto d = tr.data_mut();
CHECK(tr.data_mut() != arr.data());
CHECK(tr.data() == tr.data_mut());
CHECK(arr.data() != tr.data_mut());
arr = tr.persistent();
CHECK(arr.data() == d);
CHECK(arr.data() == tr.data());
CHECK(tr.data_mut() != arr.data());
CHECK(tr.data() == tr.data_mut());
CHECK(arr.data() != tr.data_mut());
}