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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 "test/dada.hpp"
#include "test/transient_tester.hpp"
#include "test/util.hpp"
#include <catch.hpp>
#ifndef VECTOR_T
#error "define the vector template to use in VECTOR_T"
#endif
#ifndef VECTOR_TRANSIENT_T
#error "define the vector template to use in VECTOR_TRANSIENT_T"
#endif
template <typename V = VECTOR_T<unsigned>>
auto make_test_vector(unsigned min, unsigned max)
{
auto v = V{};
for (auto i = min; i < max; ++i)
v = v.push_back({i});
return v;
}
TEST_CASE("from vector and to vector")
{
constexpr auto n = 100u;
auto v = make_test_vector(0, n).transient();
CHECK_VECTOR_EQUALS(v, boost::irange(0u, n));
auto p = v.persistent();
CHECK_VECTOR_EQUALS(p, boost::irange(0u, n));
}
TEST_CASE("protect persistence")
{
auto v = VECTOR_T<unsigned>{}.transient();
v.push_back(12);
auto p = v.persistent();
v.set(0, 42);
CHECK(p[0] == 12);
CHECK(v[0] == 42);
}
TEST_CASE("push back move")
{
using vector_t = VECTOR_T<unsigned>;
auto v = vector_t{};
auto check_move = [&](vector_t&& x) -> vector_t&& {
if (vector_t::memory_policy::use_transient_rvalues)
CHECK(&x == &v);
else
CHECK(&x != &v);
return std::move(x);
};
v = check_move(std::move(v).push_back(0));
v = check_move(std::move(v).push_back(1));
v = check_move(std::move(v).push_back(2));
auto addr_before = &v[0];
v = check_move(std::move(v).push_back(3));
auto addr_after = &v[0];
if (vector_t::memory_policy::use_transient_rvalues)
CHECK(addr_before == addr_after);
else
CHECK(addr_before != addr_after);
CHECK_VECTOR_EQUALS(v, boost::irange(0u, 4u));
}
TEST_CASE("set move")
{
using vector_t = VECTOR_T<unsigned>;
auto v = vector_t{};
auto check_move = [&](vector_t&& x) -> vector_t&& {
if (vector_t::memory_policy::use_transient_rvalues)
CHECK(&x == &v);
else
CHECK(&x != &v);
return std::move(x);
};
v = v.push_back(0);
auto addr_before = &v[0];
v = check_move(std::move(v).set(0, 1));
auto addr_after = &v[0];
if (vector_t::memory_policy::use_transient_rvalues)
CHECK(addr_before == addr_after);
else
CHECK(addr_before != addr_after);
CHECK_VECTOR_EQUALS(v, boost::irange(1u, 2u));
}
TEST_CASE("update move")
{
using vector_t = VECTOR_T<unsigned>;
auto v = vector_t{};
auto check_move = [&](vector_t&& x) -> vector_t&& {
if (vector_t::memory_policy::use_transient_rvalues)
CHECK(&x == &v);
else
CHECK(&x != &v);
return std::move(x);
};
v = v.push_back(0);
auto addr_before = &v[0];
v = check_move(std::move(v).update(0, [](auto x) { return x + 1; }));
auto addr_after = &v[0];
if (vector_t::memory_policy::use_transient_rvalues)
CHECK(addr_before == addr_after);
else
CHECK(addr_before != addr_after);
CHECK_VECTOR_EQUALS(v, boost::irange(1u, 2u));
}
TEST_CASE("take move")
{
using vector_t = VECTOR_T<unsigned>;
auto v = vector_t{};
auto check_move = [&](vector_t&& x) -> vector_t&& {
if (vector_t::memory_policy::use_transient_rvalues)
CHECK(&x == &v);
else
CHECK(&x != &v);
return std::move(x);
};
v = v.push_back(0).push_back(1);
auto addr_before = &v[0];
v = check_move(std::move(v).take(1));
auto addr_after = &v[0];
if (vector_t::memory_policy::use_transient_rvalues)
CHECK(addr_before == addr_after);
else
CHECK(addr_before != addr_after);
CHECK_VECTOR_EQUALS(v, boost::irange(0u, 1u));
}
TEST_CASE("exception safety")
{
constexpr auto n = 667u;
using dadaist_vector_t = typename dadaist_wrapper<VECTOR_T<unsigned>>::type;
SECTION("push back")
{
auto t = as_transient_tester(dadaist_vector_t{});
auto d = dadaism{};
for (auto li = 0u, i = 0u; i < n;) {
auto s = d.next();
try {
if (t.transient)
t.vt.push_back({i});
else
t.vp = t.vp.push_back({i});
++i;
if (t.step())
li = i;
} catch (dada_error) {}
if (t.transient) {
CHECK_VECTOR_EQUALS(t.vt, boost::irange(0u, i));
CHECK_VECTOR_EQUALS(t.vp, boost::irange(0u, li));
} else {
CHECK_VECTOR_EQUALS(t.vp, boost::irange(0u, i));
CHECK_VECTOR_EQUALS(t.vt, boost::irange(0u, li));
}
}
CHECK(d.happenings > 0);
CHECK(t.d.happenings > 0);
IMMER_TRACE_E(d.happenings);
IMMER_TRACE_E(t.d.happenings);
}
SECTION("update")
{
using boost::irange;
using boost::join;
auto t = as_transient_tester(make_test_vector<dadaist_vector_t>(0, n));
auto d = dadaism{};
for (auto li = 0u, i = 0u; i < n;) {
auto s = d.next();
try {
if (t.transient)
t.vt.update(i, [](auto x) { return dada(), x + 1; });
else
t.vp = t.vp.update(i, [](auto x) { return dada(), x + 1; });
++i;
if (t.step())
li = i;
} catch (dada_error) {}
if (t.transient) {
CHECK_VECTOR_EQUALS(t.vt,
join(irange(1u, 1u + i), irange(i, n)));
CHECK_VECTOR_EQUALS(t.vp,
join(irange(1u, 1u + li), irange(li, n)));
} else {
CHECK_VECTOR_EQUALS(t.vp,
join(irange(1u, 1u + i), irange(i, n)));
CHECK_VECTOR_EQUALS(t.vt,
join(irange(1u, 1u + li), irange(li, n)));
}
}
CHECK(d.happenings > 0);
CHECK(t.d.happenings > 0);
}
SECTION("take")
{
auto t = as_transient_tester(make_test_vector<dadaist_vector_t>(0, n));
auto d = dadaism{};
auto deltas = magic_rotator();
auto delta = 0u;
for (auto i = n, li = i;;) {
auto s = d.next();
auto r = dadaist_vector_t{};
try {
if (t.transient)
t.vt.take(i);
else
t.vp = t.vp.take(i);
if (t.step())
li = i;
delta = deltas.next();
if (i < delta)
break;
i -= delta;
} catch (dada_error) {}
if (t.transient) {
CHECK_VECTOR_EQUALS(t.vt, boost::irange(0u, i + delta));
CHECK_VECTOR_EQUALS(t.vp, boost::irange(0u, li));
} else {
CHECK_VECTOR_EQUALS(t.vp, boost::irange(0u, i + delta));
CHECK_VECTOR_EQUALS(t.vt, boost::irange(0u, li));
}
}
CHECK(d.happenings > 0);
CHECK(t.d.happenings > 0);
}
}
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