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Diffstat (limited to 'test/util/unique_any.test.cpp')
| -rw-r--r-- | test/util/unique_any.test.cpp | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/test/util/unique_any.test.cpp b/test/util/unique_any.test.cpp new file mode 100644 index 0000000000..9357b9c0ec --- /dev/null +++ b/test/util/unique_any.test.cpp @@ -0,0 +1,186 @@ +#include <mbgl/test/util.hpp> + +#include <mbgl/util/unique_any.hpp> + +using namespace mbgl::util; + +class TestType { +public: + TestType() : i1(0), i2(1) { + str[0] = 'a'; + } + + TestType(unique_any& p) : TestType() { + p = std::unique_ptr<TestType>(this); + } + + //Detect moves + TestType(TestType&& t): i1(t.i1+1), i2(t.i2+2) { + str[0] = t.str[0]+1; + } + + int i1; + int i2; + char str[256]; +}; + +bool IsStackAllocated (const unique_any& a, const void* obj1) { + uintptr_t a_ptr = (uintptr_t)(&a); + uintptr_t obj = (uintptr_t)(obj1); + return (obj >= a_ptr && obj < a_ptr + sizeof(unique_any)); +}; + +TEST(UniqueAny, Empty) { + EXPECT_FALSE(unique_any().has_value()); + EXPECT_TRUE(unique_any().type() == typeid(void)); + EXPECT_THROW(any_cast<int>(unique_any()), bad_any_cast); +} + +TEST(UniqueAny, BasicTypes) { + unique_any i = 3; + EXPECT_TRUE(i.has_value()); + EXPECT_TRUE(i.type() == typeid(int)); + EXPECT_TRUE(IsStackAllocated(i, any_cast<int>(&i))); + + auto iValue = any_cast<int>(i); + EXPECT_TRUE(iValue == 3); + + EXPECT_TRUE(unique_any(4).has_value()); + EXPECT_TRUE(unique_any(4).type() == typeid(int)); + + unique_any f = 6.2f; + EXPECT_TRUE(f.has_value()); + EXPECT_TRUE(f.type() == typeid(float)); + EXPECT_TRUE(IsStackAllocated(f, any_cast<float>(&f))); + + const float fValue = any_cast<const float>(f); + EXPECT_TRUE(fValue == 6.2f); + + EXPECT_TRUE(unique_any(1.0f).has_value()); + EXPECT_TRUE(unique_any(1.0f).type() == typeid(float)); + + unique_any c = 'z'; + EXPECT_TRUE(c.has_value()); + EXPECT_TRUE(c.type() == typeid(char)); + EXPECT_TRUE(IsStackAllocated(c, any_cast<char>(&c))); + + EXPECT_THROW(any_cast<float>(c), bad_any_cast); + + EXPECT_TRUE(unique_any('4').has_value()); + EXPECT_TRUE(unique_any('4').type() == typeid(char)); +} + +TEST(UniqueAny, BasicTypes_Move) { + unique_any i = 3; + EXPECT_TRUE(i.has_value()); + EXPECT_TRUE(i.type() == typeid(int)); + + unique_any f = 6.2f; + EXPECT_TRUE(f.has_value()); + EXPECT_TRUE(f.type() == typeid(float)); + + f = std::move(i); + EXPECT_FALSE(i.has_value()); + EXPECT_TRUE(i.type() == typeid(void)); + + EXPECT_TRUE(f.has_value()); + EXPECT_TRUE(f.type() == typeid(int)); + +} + +TEST(UniqueAny, LargeType) { + TestType t1; + unique_any u1 = unique_any(std::move(t1)); + EXPECT_TRUE(u1.has_value()); + EXPECT_TRUE(u1.type() == typeid(TestType)); + EXPECT_FALSE(IsStackAllocated(u1, any_cast<TestType>(&u1))); + + //TestType should be moved into owning unique_any + EXPECT_EQ(any_cast<TestType>(&u1)->i1, 1); + + auto u2(std::move(u1)); + EXPECT_TRUE(u2.type() == typeid(TestType)); + EXPECT_TRUE(u1.type() == typeid(void)); + + //TestType should not be moved when owning unique_any is moved; + EXPECT_EQ(any_cast<TestType>(&u2)->i1, 1); + + //TestType should be moved out of owning unique_any + // Note: two moves are involved in returning the moved value + // First out of the unique_any, and then in the return statement + auto t2 = any_cast<TestType>(std::move(u2)); + EXPECT_EQ(t2.i1, 3); + EXPECT_TRUE(u2.type() == typeid(void)); +} + +TEST(UniqueAny, Pointer) { + auto t1 = new TestType(); + + auto u1 = unique_any(std::move(t1)); + EXPECT_TRUE(u1.has_value()); + EXPECT_TRUE(u1.type() == typeid(TestType *)); + EXPECT_TRUE(IsStackAllocated(u1, any_cast<TestType *>(&u1))); + + //Only the pointer should be moved + TestType * t2 = *any_cast<TestType *>(&u1); + EXPECT_EQ(t2->i1, 0); + + unique_any u2(4); + std::swap(u2, u1); + + EXPECT_TRUE(u1.has_value()); + EXPECT_TRUE(u1.type() == typeid(int)); + + EXPECT_TRUE(u2.has_value()); + EXPECT_TRUE(u2.type() == typeid(TestType *)); + + t2 = *any_cast<TestType *>(&u2); + EXPECT_EQ(t2->i1, 0); + delete t2; +} + + +TEST(UniqueAny, UniquePtr) { + auto t1 = std::make_unique<TestType>(); + auto u1 = unique_any(std::move(t1)); + + EXPECT_EQ(t1.get(), nullptr); + EXPECT_TRUE(u1.has_value()); + EXPECT_TRUE(u1.type() == typeid(std::unique_ptr<TestType>)); + + EXPECT_TRUE(IsStackAllocated(u1, any_cast<std::unique_ptr<TestType>>(&u1))); + + auto t2 = any_cast<std::unique_ptr<TestType> >(std::move(u1)); + EXPECT_FALSE(u1.has_value()); + + unique_any u2; + TestType * t3 = new TestType(); + u2 = std::unique_ptr<TestType>(t3); + EXPECT_TRUE(u2.has_value()); + EXPECT_TRUE(any_cast<std::unique_ptr<TestType>>(&u2)->get() == t3); +} + +TEST(UniqueAny, SharedPtr) { + + std::shared_ptr<int> shared(new int(3)); + std::weak_ptr<int> weak = shared; + unique_any u1 = 0; + + EXPECT_THROW(any_cast<float>(u1), bad_any_cast); + + EXPECT_EQ(weak.use_count(), 1); + unique_any u2 = shared; + EXPECT_EQ(weak.use_count(), 2); + + EXPECT_EQ(any_cast<std::unique_ptr<int>>(&u1), nullptr); + EXPECT_FALSE(IsStackAllocated(u1, any_cast<std::shared_ptr<TestType>>(&u1))); + + u1 = std::move(u2); + EXPECT_EQ(weak.use_count(), 2); + u2.swap(u1); + EXPECT_EQ(weak.use_count(), 2); + u2 = 0; + EXPECT_EQ(weak.use_count(), 1); + shared = nullptr; + EXPECT_EQ(weak.use_count(), 0); +} |