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/******************************************************************************
* ____ _ _____ *
* / ___| / \ | ___| C++ *
* | | / _ \ | |_ Actor *
* | |___ / ___ \| _| Framework *
* \____/_/ \_|_| *
* *
* Copyright 2011-2018 Dominik Charousset *
* *
* Distributed under the terms and conditions of the BSD 3-Clause License or *
* (at your option) under the terms and conditions of the Boost Software *
* License 1.0. See accompanying files LICENSE and LICENSE_ALTERNATIVE. *
* *
* If you did not receive a copy of the license files, see *
* http://opensource.org/licenses/BSD-3-Clause and *
* http://www.boost.org/LICENSE_1_0.txt. *
******************************************************************************/
#include "caf/config.hpp"
#define CAF_SUITE variant
#include "caf/test/unit_test.hpp"
#include <string>
#include "caf/none.hpp"
#include "caf/variant.hpp"
#include "caf/actor_system.hpp"
#include "caf/deep_to_string.hpp"
#include "caf/binary_serializer.hpp"
#include "caf/binary_deserializer.hpp"
#include "caf/actor_system_config.hpp"
using namespace std;
using namespace caf;
struct tostring_visitor : static_visitor<string> {
template <class T>
inline string operator()(const T& value) {
return to_string(value);
}
};
// 20 integer wrappers for building a variant with 20 distint types
#define i_n(n) \
class i##n { \
public: \
i##n(int y = 0) : x(y) { \
} \
i##n(i##n&& other) : x(other.x) { \
other.x = 0; \
} \
i##n& operator=(i##n&& other) { \
x = other.x; \
other.x = 0; \
return *this; \
} \
i##n(const i##n&) = default; \
i##n& operator=(const i##n&) = default; \
int x; \
}; \
bool operator==(int x, i##n y) { \
return x == y.x; \
} \
bool operator==(i##n x, int y) { \
return y == x; \
} \
bool operator==(i##n x, i##n y) { \
return x.x == y.x; \
} \
template <class Inspector> \
typename Inspector::result_type inspect(Inspector& f, i##n& x) { \
return f(meta::type_name(CAF_STR(i##n)), x.x); \
}
#define macro_repeat20(macro) \
macro(01) macro(02) macro(03) macro(04) macro(05) macro(06) macro(07) \
macro(08) macro(09) macro(10) macro(11) macro(12) macro(13) macro(14) \
macro(15) macro(16) macro(17) macro(18) macro(19) macro(20)
macro_repeat20(i_n)
// a variant with 20 element types
using v20 = variant<i01, i02, i03, i04, i05, i06, i07, i08, i09, i10,
i11, i12, i13, i14, i15, i16, i17, i18, i19, i20>;
#define announce_n(n) cfg.add_message_type<i##n>(CAF_STR(i##n));
#define v20_test(n) \
x3 = i##n{0x##n}; \
CAF_CHECK_EQUAL(deep_to_string(x3), CAF_STR(i##n) + std::string("(") \
+ std::to_string(0x##n) + ")"); \
CAF_CHECK_EQUAL(v20{x3}, i##n{0x##n}); \
x4 = x3; \
CAF_CHECK_EQUAL(x4, i##n{0x##n}); \
CAF_CHECK_EQUAL(v20{std::move(x3)}, i##n{0x##n}); \
CAF_CHECK_EQUAL(x3, i##n{0}); \
x3 = std::move(x4); \
CAF_CHECK_EQUAL(x4, i##n{0}); \
CAF_CHECK_EQUAL(x3, i##n{0x##n}); \
{ \
std::vector<char> buf; \
binary_serializer bs{sys.dummy_execution_unit(), buf}; \
inspect(bs, x3); \
CAF_CHECK_EQUAL(x3, i##n{0x##n}); \
v20 tmp; \
binary_deserializer bd{sys.dummy_execution_unit(), buf}; \
inspect(bd, tmp); \
CAF_CHECK_EQUAL(tmp, i##n{0x##n}); \
CAF_CHECK_EQUAL(tmp, x3); \
}
// copy construction, copy assign, move construction, move assign
// and finally serialization round-trip
CAF_TEST(copying_moving_roundtrips) {
actor_system_config cfg;
macro_repeat20(announce_n)
actor_system sys{cfg};
// default construction
variant<none_t> x1;
CAF_CHECK_EQUAL(x1, none);
variant<int, none_t> x2;
CAF_CHECK_EQUAL(x2, 0);
v20 x3;
CAF_CHECK_EQUAL(x3, i01{0});
v20 x4;
macro_repeat20(v20_test);
}
namespace {
struct test_visitor {
template <class... Ts>
string operator()(const Ts&... xs) {
return deep_to_string(std::forward_as_tuple(xs...));
}
};
} // namespace
CAF_TEST(constructors) {
variant<int, string> a{42};
variant<string, atom_value> b{atom("foo")};
variant<float, int, string> c{string{"bar"}};
variant<int, string, double> d{123};
variant<bool, uint8_t> e{uint8_t{252}};
CAF_CHECK_EQUAL(a, 42);
CAF_CHECK_EQUAL(b, atom("foo"));
CAF_CHECK_EQUAL(d, 123);
CAF_CHECK_NOT_EQUAL(d, std::string{"123"});
CAF_CHECK_EQUAL(e, uint8_t{252});
}
CAF_TEST(n_ary_visit) {
variant<int, string> a{42};
variant<string, atom_value> b{atom("foo")};
variant<float, int, string> c{string{"bar"}};
variant<int, string, double> d{123};
test_visitor f;
CAF_CHECK_EQUAL(visit(f, a, b), "(42, 'foo')");
CAF_CHECK_EQUAL(visit(f, a, b, c), "(42, 'foo', \"bar\")");
CAF_CHECK_EQUAL(visit(f, a, b, c, d), "(42, 'foo', \"bar\", 123)");
}
CAF_TEST(get_if) {
variant<int ,string, atom_value> b = atom("foo");
CAF_MESSAGE("test get_if directly");
CAF_CHECK_EQUAL(get_if<int>(&b), nullptr);
CAF_CHECK_EQUAL(get_if<string>(&b), nullptr);
CAF_CHECK_NOT_EQUAL(get_if<atom_value>(&b), nullptr);
CAF_MESSAGE("test get_if via unit test framework");
CAF_CHECK_NOT_EQUAL(b, 42);
CAF_CHECK_NOT_EQUAL(b, string{"foo"});
CAF_CHECK_EQUAL(b, atom("foo"));
}
CAF_TEST(less_than) {
using variant_type = variant<char, int>;
auto a = variant_type{'x'};
auto b = variant_type{'y'};
CAF_CHECK(a < b);
CAF_CHECK(!(a > b));
CAF_CHECK(a <= b);
CAF_CHECK(!(a >= b));
b = 42;
CAF_CHECK(a < b);
CAF_CHECK(!(a > b));
CAF_CHECK(a <= b);
CAF_CHECK(!(a >= b));
a = 42;
CAF_CHECK(!(a < b));
CAF_CHECK(!(a > b));
CAF_CHECK(a <= b);
CAF_CHECK(a >= b);
b = 'x';
}
CAF_TEST(equality) {
variant<uint16_t, int> x = 42;
variant<uint16_t, int> y = uint16_t{42};
CAF_CHECK_NOT_EQUAL(x, y);
}
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