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#include <mbgl/test/util.hpp>
#include <mbgl/util/peer.hpp>
using namespace mbgl::util;
class TestType {
public:
TestType() {
str[0] = 'a';
}
//Detect moves
TestType(TestType&& t): i1(t.i1+1), i2(t.i2+2) {
str[0] = t.str[0]+1;
}
TestType(const TestType&) = delete;
TestType& operator=(const TestType&) = delete;
int i1 = 0;
int i2 = 1;
char str[256];
};
bool IsStackAllocated (const peer& a, const void* obj1) {
auto a_ptr = (uintptr_t)(&a);
auto obj = (uintptr_t)(obj1);
return (obj >= a_ptr && obj < a_ptr + sizeof(peer));
};
TEST(Peer, Empty) {
EXPECT_FALSE(peer().has_value());
}
TEST(Peer, BasicTypes) {
peer i = 3;
EXPECT_TRUE(i.has_value());
EXPECT_TRUE(i.get<decltype(3)>() == 3);
auto iValue = i.get<decltype(3)>();
EXPECT_TRUE(iValue == 3);
EXPECT_TRUE(peer(4).has_value());
EXPECT_TRUE(peer(4).get<decltype(4)>() == 4);
peer f = 6.2f;
EXPECT_TRUE(f.has_value());
EXPECT_TRUE(f.get<decltype(6.2f)>() == 6.2f);
const float fValue = f.get<decltype(6.2f)>();
EXPECT_TRUE(fValue == 6.2f);
EXPECT_TRUE(peer(1.0f).has_value());
EXPECT_TRUE(peer(1.0f).get<decltype(1.0f)>() == 1.0f);
peer c = 'z';
EXPECT_TRUE(c.has_value());
EXPECT_TRUE(c.get<decltype('z')>() == 'z');
EXPECT_TRUE(peer('z').has_value());
EXPECT_TRUE(peer('z').get<decltype('z')>() == 'z');
}
TEST(Peer, BasicTypes_Move) {
peer i = 3;
EXPECT_TRUE(i.has_value());
peer f = 6.2f;
EXPECT_TRUE(f.has_value());
f = std::move(i);
EXPECT_FALSE(i.has_value());
EXPECT_TRUE(f.has_value());
EXPECT_TRUE(f.get<decltype(3)>() == 3);
}
TEST(Peer, SmallType) {
struct T {
T(int32_t* p_) : p(p_) {
(*p)++;
}
T(T&& t) noexcept : p(t.p) {
(*p)++;
}
~T() {
(*p)--;
}
T(const T&) = delete;
T& operator=(const T&) = delete;
int32_t* p;
};
int32_t p = 0;
{
peer u1 = peer(T(&p));
EXPECT_EQ(p, 1);
auto u2(std::move(u1));
EXPECT_EQ(p, 1);
}
EXPECT_EQ(p, 0);
}
TEST(Peer, LargeType) {
TestType t1;
peer u1 = peer(std::move(t1));
EXPECT_TRUE(u1.has_value());
//TestType should be moved into owning peer
EXPECT_EQ(u1.get<TestType>().i1, 1);
auto u2(std::move(u1));
EXPECT_FALSE(u1.has_value());
//TestType should not be moved when owning peer is moved;
EXPECT_EQ(u2.get<TestType>().i1, 1);
// TestType should not be moved out of owning peer
auto& t2 = u2.get<TestType>();
EXPECT_TRUE(u2.has_value());
EXPECT_EQ(t2.i1, 1);
}
TEST(Peer, Pointer) {
auto t1 = new TestType();
auto u1 = peer(std::move(t1));
EXPECT_TRUE(u1.has_value());
//Only the pointer should be moved
TestType * t2 = u1.get<TestType *>();
EXPECT_EQ(t2->i1, 0);
peer u2(4);
std::swap(u2, u1);
EXPECT_TRUE(u1.has_value());
EXPECT_TRUE(u2.has_value());
t2 = u2.get<TestType *>();
EXPECT_EQ(t2->i1, 0);
delete t2;
}
TEST(Peer, UniquePtr) {
auto t1 = std::make_unique<TestType>();
auto u1 = peer(std::move(t1));
EXPECT_EQ(t1.get(), nullptr);
EXPECT_TRUE(u1.has_value());
u1 = peer();
EXPECT_FALSE(u1.has_value());
peer u2;
auto* t3 = new TestType();
u2 = std::unique_ptr<TestType>(t3);
EXPECT_TRUE(u2.has_value());
}
TEST(Peer, SharedPtr) {
std::shared_ptr<int> shared(new int(3));
std::weak_ptr<int> weak = shared;
peer u1 = 0;
EXPECT_EQ(weak.use_count(), 1);
peer u2 = shared;
EXPECT_EQ(weak.use_count(), 2);
u1 = std::move(u2);
EXPECT_EQ(weak.use_count(), 2);
std::swap(u2, u1);
EXPECT_EQ(weak.use_count(), 2);
u2 = 0;
EXPECT_EQ(weak.use_count(), 1);
shared = nullptr;
EXPECT_EQ(weak.use_count(), 0);
}
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