libcryfs/test/cpp-utils/pointer/unique_ref_test.cpp

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#include <gtest/gtest.h>
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#include "cpp-utils/pointer/unique_ref.h"
#include <vector>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
using namespace cpputils;
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namespace {
class SomeClass0Parameters {};
class SomeClass1Parameter {
public:
SomeClass1Parameter(int param_): param(param_) {}
int param;
};
class SomeClass2Parameters {
public:
SomeClass2Parameters(int param1_, int param2_): param1(param1_), param2(param2_) {}
int param1;
int param2;
};
using SomeClass = SomeClass0Parameters;
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struct SomeBaseClass {
SomeBaseClass(int v_): v(v_) {}
int v;
};
struct SomeChildClass : SomeBaseClass {
SomeChildClass(int v): SomeBaseClass(v) {}
};
}
static_assert(std::is_same<SomeClass, unique_ref<SomeClass>::element_type>::value, "unique_ref<T>::element_type is wrong");
static_assert(std::is_same<int, unique_ref<int, SomeClass1Parameter>::element_type>::value, "unique_ref<T,D>::element_type is wrong");
static_assert(std::is_same<SomeClass1Parameter, unique_ref<int, SomeClass1Parameter>::deleter_type>::value, "unique_ref<T,D>::deleter_type is wrong");
TEST(MakeUniqueRefTest, Primitive) {
unique_ref<int> var = make_unique_ref<int>(3);
EXPECT_EQ(3, *var);
}
TEST(MakeUniqueRefTest, ClassWith0Parameters) {
unique_ref<SomeClass0Parameters> var = make_unique_ref<SomeClass0Parameters>();
//Check that the type is correct
EXPECT_EQ(var.get(), dynamic_cast<SomeClass0Parameters*>(var.get()));
}
TEST(MakeUniqueRefTest, ClassWith1Parameter) {
unique_ref<SomeClass1Parameter> var = make_unique_ref<SomeClass1Parameter>(5);
EXPECT_EQ(5, var->param);
}
TEST(MakeUniqueRefTest, ClassWith2Parameters) {
unique_ref<SomeClass2Parameters> var = make_unique_ref<SomeClass2Parameters>(7,2);
EXPECT_EQ(7, var->param1);
EXPECT_EQ(2, var->param2);
}
TEST(MakeUniqueRefTest, TypeIsAutoDeductible) {
auto var1 = make_unique_ref<int>(3);
auto var2 = make_unique_ref<SomeClass0Parameters>();
auto var3 = make_unique_ref<SomeClass1Parameter>(2);
auto var4 = make_unique_ref<SomeClass2Parameters>(2, 3);
}
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TEST(MakeUniqueRefTest, CanAssignToUniquePtr) {
std::unique_ptr<int> var = make_unique_ref<int>(2);
EXPECT_EQ(2, *var);
}
TEST(MakeUniqueRefTest, CanAssignToSharedPtr) {
std::shared_ptr<int> var = make_unique_ref<int>(2);
EXPECT_EQ(2, *var);
}
TEST(MakeUniqueRefTest, CanAssignToBaseClassPtr) {
unique_ref<SomeBaseClass> var = make_unique_ref<SomeChildClass>(3);
EXPECT_EQ(3, var->v);
}
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TEST(MakeUniqueRefTest, CanAssignToBaseClassUniquePtr) {
std::unique_ptr<SomeBaseClass> var = make_unique_ref<SomeChildClass>(3);
EXPECT_EQ(3, var->v);
}
TEST(MakeUniqueRefTest, CanAssignToBaseClassSharedPtr) {
std::shared_ptr<SomeBaseClass> var = make_unique_ref<SomeChildClass>(3);
EXPECT_EQ(3, var->v);
}
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TEST(NullcheckTest, givenUniquePtrToInt_withNullptr_whenNullcheckCalled_thenReturnsNone) {
boost::optional<unique_ref<int>> var = nullcheck(std::unique_ptr<int>(nullptr));
EXPECT_FALSE((bool)var);
}
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TEST(NullcheckTest, givenUniquePtrToObject_withNullptr_whenNullcheckCalled_thenReturnsNone) {
boost::optional<unique_ref<SomeClass0Parameters>> var = nullcheck(std::unique_ptr<SomeClass0Parameters>(nullptr));
EXPECT_FALSE((bool)var);
}
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TEST(NullcheckTest, givenUniquePtrToInt_withNonNullptr_whenNullcheckCalled_thenReturnsUniqueRef) {
boost::optional<unique_ref<int>> var = nullcheck(std::make_unique<int>(3));
EXPECT_TRUE((bool)var);
EXPECT_EQ(3, **var);
}
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TEST(NullcheckTest, givenUniquePtrToObject_withNonNullptr_whenNullcheckCalled_thenReturnsUniqueRef) {
boost::optional<unique_ref<SomeClass0Parameters>> var = nullcheck(std::make_unique<SomeClass0Parameters>());
EXPECT_TRUE((bool)var);
//Check that the type is correct
EXPECT_EQ(var->get(), dynamic_cast<SomeClass0Parameters*>(var->get()));
}
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TEST(NullcheckTest, givenUniquePtrToObjectWith1Parameter_withNonNullptr_whenNullcheckCalled_thenReturnsUniqueRef) {
boost::optional<unique_ref<SomeClass1Parameter>> var = nullcheck(std::make_unique<SomeClass1Parameter>(5));
EXPECT_TRUE((bool)var);
EXPECT_EQ(5, (*var)->param);
}
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TEST(NullcheckTest, givenUniquePtrToObjectWith2Parameters_withNonNullptr_whenNullcheckCalled_thenReturnsUniqueRef) {
boost::optional<unique_ref<SomeClass2Parameters>> var = nullcheck(std::make_unique<SomeClass2Parameters>(7,2));
EXPECT_TRUE((bool)var);
EXPECT_EQ(7, (*var)->param1);
EXPECT_EQ(2, (*var)->param2);
}
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TEST(NullcheckTest, givenUniquePtrToInt_withNonNullptr_whenNullcheckCalled_thenCanExtractUniqueRef) {
boost::optional<unique_ref<int>> var = nullcheck(std::make_unique<int>(3));
unique_ref<int> resolved = std::move(var).value();
}
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TEST(NullcheckTest, givenUniquePtrToObject_withNonNullptr_whenNullcheckCalled_thenCanExtractUniqueRef) {
boost::optional<unique_ref<SomeClass0Parameters>> var = nullcheck(std::make_unique<SomeClass>());
unique_ref<SomeClass0Parameters> resolved = std::move(var).value();
}
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TEST(NullcheckTest, givenUniquePtrToInt_whenCallingNullcheck_thenTypesCanBeAutoDeduced) {
auto var = nullcheck(std::make_unique<int>(3));
auto resolved = std::move(var).value();
}
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TEST(NullcheckTest, givenUniquePtrToObject_whenCallingNullcheck_thenTypesCanBeAutoDeduced) {
auto var = nullcheck(std::make_unique<SomeClass>());
auto resolved = std::move(var).value();
}
class UniqueRefTest: public ::testing::Test {
public:
template<typename T> void makeInvalid(unique_ref<T> ref) {
UNUSED(ref);
//ref is moved in here and then destructed
}
};
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TEST_F(UniqueRefTest, givenUniqueRefToInt_whenCallingGet_thenReturnsValue) {
unique_ref<int> obj = make_unique_ref<int>(3);
EXPECT_EQ(3, *obj.get());
}
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TEST_F(UniqueRefTest, givenUniqueRefToObject_whenCallingGet_thenReturnsObject) {
unique_ref<SomeClass1Parameter> obj = make_unique_ref<SomeClass1Parameter>(5);
EXPECT_EQ(5, obj.get()->param);
}
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TEST_F(UniqueRefTest, givenUniqueRefToInt_whenDereferencing_thenReturnsValue) {
unique_ref<int> obj = make_unique_ref<int>(3);
EXPECT_EQ(3, *obj);
}
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TEST_F(UniqueRefTest, givenUniqueRefToObject_whenDereferencing_thenReturnsObject) {
unique_ref<SomeClass1Parameter> obj = make_unique_ref<SomeClass1Parameter>(5);
EXPECT_EQ(5, (*obj).param);
}
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TEST_F(UniqueRefTest, givenUniqueRefToObject_whenArrowDereferencing_thenReturnsObject) {
unique_ref<SomeClass1Parameter> obj = make_unique_ref<SomeClass1Parameter>(3);
EXPECT_EQ(3, obj->param);
}
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TEST_F(UniqueRefTest, givenUniqueRef_whenMoveAssigning_thenPointsToSameObject) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
unique_ref<SomeClass> obj2 = make_unique_ref<SomeClass>();
SomeClass *obj1ptr = obj1.get();
obj2 = std::move(obj1);
EXPECT_EQ(obj1ptr, obj2.get());
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}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveAssigning_thenOldInstanceInvalid) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
unique_ref<SomeClass> obj2 = make_unique_ref<SomeClass>();
obj2 = std::move(obj1);
EXPECT_FALSE(obj1.isValid());
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveAssigningToBaseClass_thenPointsToSameObject) {
unique_ref<SomeChildClass> child = make_unique_ref<SomeChildClass>(3);
unique_ref<SomeBaseClass> base = make_unique_ref<SomeBaseClass>(10);
base = std::move(child);
EXPECT_EQ(3, base->v);
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveAssigningToBaseClass_thenOldInstanceInvalid) {
unique_ref<SomeChildClass> obj1 = make_unique_ref<SomeChildClass>(3);
unique_ref<SomeBaseClass> obj2 = make_unique_ref<SomeBaseClass>(10);
obj2 = std::move(obj1);
EXPECT_FALSE(obj1.isValid());
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveAssigningToUniquePtr_thenPointsToSameObject) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
std::unique_ptr<SomeClass> obj2 = std::make_unique<SomeClass>();
SomeClass *obj1ptr = obj1.get();
obj2 = std::move(obj1);
EXPECT_EQ(obj1ptr, obj2.get());
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveAssigningToUniquePtr_thenOldInstanceInvalid) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
std::unique_ptr<SomeClass> obj2 = std::make_unique<SomeClass>();
obj2 = std::move(obj1);
EXPECT_FALSE(obj1.isValid());
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveAssigningToBaseClassUniquePtr_thenPointsToSameObject) {
unique_ref<SomeChildClass> child = make_unique_ref<SomeChildClass>(3);
std::unique_ptr<SomeBaseClass> base = std::make_unique<SomeBaseClass>(10);
base = std::move(child);
EXPECT_EQ(3, base->v);
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveAssigningToBaseClassUniquePtr_thenOldInstanceInvalid) {
unique_ref<SomeChildClass> obj1 = make_unique_ref<SomeChildClass>(3);
std::unique_ptr<SomeBaseClass> obj2 = std::make_unique<SomeBaseClass>(10);
obj2 = std::move(obj1);
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EXPECT_FALSE(obj1.isValid());
}
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TEST_F(UniqueRefTest, givenUniqueRef_whenMoveAssigningToSharedPtr_thenPointsToSameObject) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
std::shared_ptr<SomeClass> obj2 = std::make_shared<SomeClass>();
SomeClass *obj1ptr = obj1.get();
obj2 = std::move(obj1);
EXPECT_EQ(obj1ptr, obj2.get());
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveAssigningToSharedPtr_thenOldInstanceInvalid) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
std::shared_ptr<SomeClass> obj2 = std::make_shared<SomeClass>();
obj2 = std::move(obj1);
EXPECT_FALSE(obj1.isValid());
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveAssigningToBaseClassSharedPtr_thenPointsToSameObject) {
unique_ref<SomeChildClass> child = make_unique_ref<SomeChildClass>(3);
std::shared_ptr<SomeBaseClass> base = std::make_shared<SomeBaseClass>(10);
base = std::move(child);
EXPECT_EQ(3, base->v);
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveAssigningToBaseClassSharedPtr_thenOldInstanceInvalid) {
unique_ref<SomeChildClass> obj1 = make_unique_ref<SomeChildClass>(3);
std::shared_ptr<SomeBaseClass> obj2 = std::make_shared<SomeBaseClass>(10);
obj2 = std::move(obj1);
EXPECT_FALSE(obj1.isValid());
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveConstructing_thenPointsToSameObject) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
SomeClass *obj1ptr = obj1.get();
unique_ref<SomeClass> obj2 = std::move(obj1);
EXPECT_EQ(obj1ptr, obj2.get());
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}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveConstructing_thenOldInstanceInvalid) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
unique_ref<SomeClass> obj2 = std::move(obj1);
EXPECT_FALSE(obj1.isValid());
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveConstructingToBaseClass_thenPointsToSameObject) {
unique_ref<SomeChildClass> child = make_unique_ref<SomeChildClass>(3);
unique_ref<SomeBaseClass> base = std::move(child);
EXPECT_EQ(3, base->v);
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveConstructingToBaseClass_thenOldInstanceInvalid) {
unique_ref<SomeChildClass> child = make_unique_ref<SomeChildClass>(3);
unique_ref<SomeBaseClass> base = std::move(child);
EXPECT_FALSE(child.isValid());
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveConstructingToUniquePtr_thenPointsToSameObject) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
SomeClass *obj1ptr = obj1.get();
std::unique_ptr<SomeClass> obj2 = std::move(obj1);
EXPECT_EQ(obj1ptr, obj2.get());
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveConstructingToUniquePtr_thenOldInstanceInvalid) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
std::unique_ptr<SomeClass> obj2 = std::move(obj1);
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EXPECT_FALSE(obj1.isValid());
}
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TEST_F(UniqueRefTest, givenUniqueRef_whenMoveConstructingToBaseClassUniquePtr_thenPointsToSameObject) {
unique_ref<SomeChildClass> child = make_unique_ref<SomeChildClass>(3);
std::unique_ptr<SomeBaseClass> base = std::move(child);
EXPECT_EQ(3, base->v);
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveConstructingToBaseClassUniquePtr_thenOldInstanceInvalid) {
unique_ref<SomeChildClass> child = make_unique_ref<SomeChildClass>(3);
std::unique_ptr<SomeBaseClass> base = std::move(child);
EXPECT_FALSE(child.isValid());
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveConstructingToSharedPtr_thenPointsToSameObject) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
SomeClass *obj1ptr = obj1.get();
std::shared_ptr<SomeClass> obj2 = std::move(obj1);
EXPECT_EQ(obj1ptr, obj2.get());
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveConstructingToSharedPtr_thenOldInstanceInvalid) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
std::shared_ptr<SomeClass> obj2 = std::move(obj1);
EXPECT_FALSE(obj1.isValid());
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveConstructingToBaseClassSharedPtr_thenPointsToSameObject) {
unique_ref<SomeChildClass> child = make_unique_ref<SomeChildClass>(3);
std::shared_ptr<SomeBaseClass> base = std::move(child);
EXPECT_EQ(3, base->v);
}
TEST_F(UniqueRefTest, givenUniqueRef_whenMoveConstructingToBaseClassSharedPtr_thenOldInstanceInvalid) {
unique_ref<SomeChildClass> child = make_unique_ref<SomeChildClass>(3);
std::shared_ptr<SomeBaseClass> base = std::move(child);
EXPECT_FALSE(child.isValid());
}
TEST_F(UniqueRefTest, Swap) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
unique_ref<SomeClass> obj2 = make_unique_ref<SomeClass>();
SomeClass *obj1ptr = obj1.get();
SomeClass *obj2ptr = obj2.get();
std::swap(obj1, obj2);
EXPECT_EQ(obj2ptr, obj1.get());
EXPECT_EQ(obj1ptr, obj2.get());
}
TEST_F(UniqueRefTest, SwapFromInvalid) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
makeInvalid(std::move(obj1));
unique_ref<SomeClass> obj2 = make_unique_ref<SomeClass>();
SomeClass *obj2ptr = obj2.get();
std::swap(obj1, obj2);
EXPECT_EQ(obj2ptr, obj1.get());
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EXPECT_TRUE(obj1.isValid());
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EXPECT_FALSE(obj2.isValid());
}
TEST_F(UniqueRefTest, SwapWithInvalid) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
unique_ref<SomeClass> obj2 = make_unique_ref<SomeClass>();
makeInvalid(std::move(obj2));
SomeClass *obj1ptr = obj1.get();
std::swap(obj1, obj2);
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EXPECT_FALSE(obj1.isValid());
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EXPECT_TRUE(obj2.isValid());
EXPECT_EQ(obj1ptr, obj2.get());
}
TEST_F(UniqueRefTest, SwapInvalidWithInvalid) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
unique_ref<SomeClass> obj2 = make_unique_ref<SomeClass>();
makeInvalid(std::move(obj1));
makeInvalid(std::move(obj2));
std::swap(obj1, obj2);
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EXPECT_FALSE(obj1.isValid());
EXPECT_FALSE(obj2.isValid());
}
TEST_F(UniqueRefTest, SwapFromRValue) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
unique_ref<SomeClass> obj2 = make_unique_ref<SomeClass>();
SomeClass *obj1ptr = obj1.get();
SomeClass *obj2ptr = obj2.get();
std::swap(std::move(obj1), obj2);
EXPECT_EQ(obj2ptr, obj1.get());
EXPECT_EQ(obj1ptr, obj2.get());
}
TEST_F(UniqueRefTest, SwapWithRValue) {
unique_ref<SomeClass> obj1 = make_unique_ref<SomeClass>();
unique_ref<SomeClass> obj2 = make_unique_ref<SomeClass>();
SomeClass *obj1ptr = obj1.get();
SomeClass *obj2ptr = obj2.get();
std::swap(obj1, std::move(obj2));
EXPECT_EQ(obj2ptr, obj1.get());
EXPECT_EQ(obj1ptr, obj2.get());
}
TEST_F(UniqueRefTest, CanBePutInContainer_Primitive) {
std::vector<unique_ref<int>> vec;
vec.push_back(make_unique_ref<int>(3));
EXPECT_EQ(3, *vec[0]);
}
TEST_F(UniqueRefTest, CanBePutInContainer_Object) {
std::vector<unique_ref<SomeClass1Parameter>> vec;
vec.push_back(make_unique_ref<SomeClass1Parameter>(5));
EXPECT_EQ(5, vec[0]->param);
}
TEST_F(UniqueRefTest, CanBePutInContainer_Nullcheck) {
std::vector<unique_ref<int>> vec;
vec.push_back(*nullcheck(std::make_unique<int>(3)));
EXPECT_EQ(3, *vec[0]);
}
TEST_F(UniqueRefTest, CanBePutInSet_Primitive) {
std::set<unique_ref<int>> set;
set.insert(make_unique_ref<int>(3));
EXPECT_EQ(3, **set.begin());
}
TEST_F(UniqueRefTest, CanBePutInSet_Object) {
std::set<unique_ref<SomeClass1Parameter>> set;
set.insert(make_unique_ref<SomeClass1Parameter>(5));
EXPECT_EQ(5, (*set.begin())->param);
}
TEST_F(UniqueRefTest, CanBePutInSet_Nullcheck) {
std::set<unique_ref<int>> set;
set.insert(*nullcheck(std::make_unique<int>(3)));
EXPECT_EQ(3, **set.begin());
}
TEST_F(UniqueRefTest, CanBePutInUnorderedSet_Primitive) {
std::unordered_set<unique_ref<int>> set;
set.insert(make_unique_ref<int>(3));
EXPECT_EQ(3, **set.begin());
}
TEST_F(UniqueRefTest, CanBePutInUnorderedSet_Object) {
std::unordered_set<unique_ref<SomeClass1Parameter>> set;
set.insert(make_unique_ref<SomeClass1Parameter>(5));
EXPECT_EQ(5, (*set.begin())->param);
}
TEST_F(UniqueRefTest, CanBePutInUnorderedSet_Nullcheck) {
std::unordered_set<unique_ref<int>> set;
set.insert(*nullcheck(std::make_unique<int>(3)));
EXPECT_EQ(3, **set.begin());
}
TEST_F(UniqueRefTest, CanBePutInMap_Primitive) {
std::map<unique_ref<int>, unique_ref<int>> map;
map.insert(std::make_pair(make_unique_ref<int>(3), make_unique_ref<int>(5)));
EXPECT_EQ(3, *map.begin()->first);
EXPECT_EQ(5, *map.begin()->second);
}
TEST_F(UniqueRefTest, CanBePutInMap_Object) {
std::map<unique_ref<SomeClass1Parameter>, unique_ref<SomeClass1Parameter>> map;
map.insert(std::make_pair(make_unique_ref<SomeClass1Parameter>(5), make_unique_ref<SomeClass1Parameter>(3)));
EXPECT_EQ(5, map.begin()->first->param);
EXPECT_EQ(3, map.begin()->second->param);
}
TEST_F(UniqueRefTest, CanBePutInMap_Nullcheck) {
std::map<unique_ref<int>, unique_ref<int>> map;
map.insert(std::make_pair(*nullcheck(std::make_unique<int>(3)), *nullcheck(std::make_unique<int>(5))));
EXPECT_EQ(3, *map.begin()->first);
EXPECT_EQ(5, *map.begin()->second);
}
TEST_F(UniqueRefTest, CanBePutInUnorderedMap_Primitive) {
std::unordered_map<unique_ref<int>, unique_ref<int>> map;
map.insert(std::make_pair(make_unique_ref<int>(3), make_unique_ref<int>(5)));
EXPECT_EQ(3, *map.begin()->first);
EXPECT_EQ(5, *map.begin()->second);
}
TEST_F(UniqueRefTest, CanBePutInUnorderedMap_Object) {
std::unordered_map<unique_ref<SomeClass1Parameter>, unique_ref<SomeClass1Parameter>> map;
map.insert(std::make_pair(make_unique_ref<SomeClass1Parameter>(5), make_unique_ref<SomeClass1Parameter>(3)));
EXPECT_EQ(5, map.begin()->first->param);
EXPECT_EQ(3, map.begin()->second->param);
}
TEST_F(UniqueRefTest, CanBePutInUnorderedMap_Nullcheck) {
std::unordered_map<unique_ref<int>, unique_ref<int>> map;
map.insert(std::make_pair(*nullcheck(std::make_unique<int>(3)), *nullcheck(std::make_unique<int>(5))));
EXPECT_EQ(3, *map.begin()->first);
EXPECT_EQ(5, *map.begin()->second);
}
TEST_F(UniqueRefTest, Equality_Nullptr) {
unique_ref<int> var1 = make_unique_ref<int>(3);
unique_ref<int> var2 = make_unique_ref<int>(4);
makeInvalid(std::move(var1));
makeInvalid(std::move(var2));
EXPECT_TRUE(var1 == var2);
EXPECT_FALSE(var1 != var2);
}
TEST_F(UniqueRefTest, Nonequality) {
unique_ref<int> var1 = make_unique_ref<int>(3);
unique_ref<int> var2 = make_unique_ref<int>(3);
EXPECT_TRUE(var1 != var2);
EXPECT_FALSE(var1 == var2);
}
TEST_F(UniqueRefTest, Nonequality_NullptrLeft) {
unique_ref<int> var1 = make_unique_ref<int>(3);
unique_ref<int> var2 = make_unique_ref<int>(3);
makeInvalid(std::move(var1));
EXPECT_TRUE(var1 != var2);
EXPECT_FALSE(var1 == var2);
}
TEST_F(UniqueRefTest, Nonequality_NullptrRight) {
unique_ref<int> var1 = make_unique_ref<int>(3);
unique_ref<int> var2 = make_unique_ref<int>(3);
makeInvalid(std::move(var2));
EXPECT_TRUE(var1 != var2);
EXPECT_FALSE(var1 == var2);
}
TEST_F(UniqueRefTest, HashIsDifferent) {
unique_ref<int> var1 = make_unique_ref<int>(3);
unique_ref<int> var2 = make_unique_ref<int>(3);
EXPECT_NE(std::hash<unique_ref<int>>()(var1), std::hash<unique_ref<int>>()(var2));
}
TEST_F(UniqueRefTest, HashIsDifferent_NullptrLeft) {
unique_ref<int> var1 = make_unique_ref<int>(3);
unique_ref<int> var2 = make_unique_ref<int>(3);
makeInvalid(std::move(var1));
EXPECT_NE(std::hash<unique_ref<int>>()(var1), std::hash<unique_ref<int>>()(var2));
}
TEST_F(UniqueRefTest, HashIsDifferent_NullptrRight) {
unique_ref<int> var1 = make_unique_ref<int>(3);
unique_ref<int> var2 = make_unique_ref<int>(3);
makeInvalid(std::move(var2));
EXPECT_NE(std::hash<unique_ref<int>>()(var1), std::hash<unique_ref<int>>()(var2));
}
TEST_F(UniqueRefTest, HashIsSame_BothNullptr) {
unique_ref<int> var1 = make_unique_ref<int>(3);
unique_ref<int> var2 = make_unique_ref<int>(3);
makeInvalid(std::move(var1));
makeInvalid(std::move(var2));
EXPECT_EQ(std::hash<unique_ref<int>>()(var1), std::hash<unique_ref<int>>()(var2));
}
TEST_F(UniqueRefTest, OneIsLess) {
unique_ref<int> var1 = make_unique_ref<int>(3);
unique_ref<int> var2 = make_unique_ref<int>(3);
EXPECT_TRUE(std::less<unique_ref<int>>()(var1, var2) != std::less<unique_ref<int>>()(var2, var1));
}
TEST_F(UniqueRefTest, NullptrIsLess1) {
unique_ref<int> var1 = make_unique_ref<int>(3);
unique_ref<int> var2 = make_unique_ref<int>(3);
makeInvalid(std::move(var1));
EXPECT_TRUE(std::less<unique_ref<int>>()(var1, var2));
}
TEST_F(UniqueRefTest, NullptrIsLess2) {
unique_ref<int> var1 = make_unique_ref<int>(3);
unique_ref<int> var2 = make_unique_ref<int>(3);
makeInvalid(std::move(var2));
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EXPECT_FALSE(std::less<unique_ref<int>>()(var1, var2));
}
TEST_F(UniqueRefTest, NullptrIsNotLessThanNullptr) {
unique_ref<int> var1 = make_unique_ref<int>(3);
unique_ref<int> var2 = make_unique_ref<int>(3);
makeInvalid(std::move(var1));
makeInvalid(std::move(var2));
EXPECT_FALSE(std::less<unique_ref<int>>()(var1, var2));
}
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namespace {
class OnlyMoveable {
public:
OnlyMoveable(int value_): value(value_) {}
OnlyMoveable(OnlyMoveable &&source): value(source.value) {source.value = -1;}
bool operator==(const OnlyMoveable &rhs) const {
return value == rhs.value;
}
int value;
private:
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OnlyMoveable(const OnlyMoveable& rhs) = delete;
OnlyMoveable& operator=(const OnlyMoveable& rhs) = delete;
};
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}
TEST_F(UniqueRefTest, AllowsDerefOnRvalue) {
OnlyMoveable val = *make_unique_ref<OnlyMoveable>(5);
EXPECT_EQ(OnlyMoveable(5), val);
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}
namespace {
class DestructableMock final {
public:
DestructableMock(bool* wasDestructed): wasDestructed_(wasDestructed) {}
~DestructableMock() {
*wasDestructed_ = true;
}
private:
bool* wasDestructed_;
};
}
TEST_F(UniqueRefTest, givenUniqueRefWithDefaultDeleter_whenDestructed_thenCallsDefaultDeleter) {
bool wasDestructed = false;
{
auto obj = make_unique_ref<DestructableMock>(&wasDestructed);
EXPECT_FALSE(wasDestructed);
}
EXPECT_TRUE(wasDestructed);
}
TEST_F(UniqueRefTest, givenUniqueRefWithDefaultDeleter_whenMoveConstructed_thenDoesntCallDefaultDeleter) {
bool wasDestructed = false;
auto obj = make_unique_ref<DestructableMock>(&wasDestructed);
auto obj2 = std::move(obj);
EXPECT_FALSE(wasDestructed);
}
TEST_F(UniqueRefTest, givenUniqueRefWithDefaultDeleter_whenMoveAssigned_thenDoesntCallDefaultDeleter) {
bool dummy = false;
bool wasDestructed = false;
auto obj = make_unique_ref<DestructableMock>(&wasDestructed);
auto obj2 = make_unique_ref<DestructableMock>(&dummy);
obj2 = std::move(obj);
EXPECT_FALSE(wasDestructed);
}
TEST_F(UniqueRefTest, givenUniqueRefWithDefaultDeleter_whenDestructCalled_thenCallsDefaultDeleter) {
bool wasDestructed = false;
auto obj = make_unique_ref<DestructableMock>(&wasDestructed);
destruct(std::move(obj));
EXPECT_TRUE(wasDestructed);
EXPECT_FALSE(obj.isValid());
}
namespace {
struct SetToTrueDeleter final {
void operator()(bool* ptr) {
*ptr = true;
}
};
}
TEST_F(UniqueRefTest, givenUniqueRefWithCustomDefaultConstructibleDeleter_whenDestructed_thenCallsCustomDeleter) {
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bool wasDestructed = false;
{
auto obj = nullcheck(std::unique_ptr<bool, SetToTrueDeleter>(&wasDestructed)).value();
EXPECT_FALSE(wasDestructed);
}
EXPECT_TRUE(wasDestructed);
}
TEST_F(UniqueRefTest, givenUniqueRefWithCustomDefaultConstructibleDeleter_whenMoveConstructed_thenDoesntCallCustomDeleter) {
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bool wasDestructed = false;
auto obj = nullcheck(std::unique_ptr<bool, SetToTrueDeleter>(&wasDestructed)).value();
auto obj2 = std::move(obj);
EXPECT_FALSE(wasDestructed);
}
TEST_F(UniqueRefTest, givenUniqueRefWithCustomDefaultConstructibleDeleter_whenMoveAssigned_thenDoesntCallCustomDeleter) {
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bool dummy = false;
bool wasDestructed = false;
auto obj = nullcheck(std::unique_ptr<bool, SetToTrueDeleter>(&wasDestructed)).value();
auto obj2 = nullcheck(std::unique_ptr<bool, SetToTrueDeleter>(&dummy)).value();
obj2 = std::move(obj);
EXPECT_FALSE(wasDestructed);
}
TEST_F(UniqueRefTest, givenUniqueRefWithCustomDefaultConstructibleDeleter_whenDestructCalled_thenCallsCustomDeleter) {
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bool wasDestructed = false;
auto obj = nullcheck(std::unique_ptr<bool, SetToTrueDeleter>(&wasDestructed)).value();
destruct(std::move(obj));
EXPECT_TRUE(wasDestructed);
EXPECT_FALSE(obj.isValid());
}
namespace {
struct SetToDeleter final {
SetToDeleter(int value): value_(value) {}
int value_;
void operator()(int* ptr) {
*ptr = value_;
}
};
}
TEST_F(UniqueRefTest, givenUniqueRefWithCustomDeleterInstance_whenDestructed_thenCallsCustomDeleterInstance) {
int value = 0;
{
auto obj = nullcheck(std::unique_ptr<int, SetToDeleter>(&value, SetToDeleter(4))).value();
EXPECT_EQ(0, value);
}
EXPECT_EQ(4, value);
}
TEST_F(UniqueRefTest, givenUniqueRefWithCustomDeleterInstance_whenMoveConstructed_thenDoesntCallCustomDeleterInstance) {
int value = 0;
auto obj = nullcheck(std::unique_ptr<int, SetToDeleter>(&value, SetToDeleter(4))).value();
auto obj2 = std::move(obj);
EXPECT_EQ(0, value);
}
TEST_F(UniqueRefTest, givenUniqueRefWithCustomDeleterInstance_whenMoveAssigned_thenDoesntCallCustomDeleterInstance) {
int dummy = 0;
int value = 0;
auto obj = nullcheck(std::unique_ptr<int, SetToDeleter>(&value, SetToDeleter(4))).value();
auto obj2 = nullcheck(std::unique_ptr<int, SetToDeleter>(&dummy, SetToDeleter(0))).value();
obj2 = std::move(obj);
EXPECT_EQ(0, value);
}
TEST_F(UniqueRefTest, givenUniqueRefWithCustomDeleterInstance_whenDestructCalled_thenCallsCustomDeleterInstance) {
int value = 0;
auto obj = nullcheck(std::unique_ptr<int, SetToDeleter>(&value, SetToDeleter(4))).value();
destruct(std::move(obj));
EXPECT_EQ(4, value);
EXPECT_FALSE(obj.isValid());
}
TEST_F(UniqueRefTest, givenUniquePtrWithCustomDeleterInstance_whenMovedToUniqueRef_thenHasSameDeleterInstance) {
int dummy = 0;
SetToDeleter deleter(4);
auto ptr = std::unique_ptr<int, SetToDeleter>(&dummy, deleter);
auto ref = nullcheck(std::move(ptr)).value();
EXPECT_EQ(4, ref.get_deleter().value_);
}
TEST_F(UniqueRefTest, givenUniqueRefWithCustomDeleterInstance_whenMoveConstructing_thenHasSameDeleterInstance) {
int dummy = 0;
SetToDeleter deleter(4);
auto ref = nullcheck(std::unique_ptr<int, SetToDeleter>(&dummy, deleter)).value();
unique_ref<int, SetToDeleter> ref2 = std::move(ref);
EXPECT_EQ(4, ref2.get_deleter().value_);
}
TEST_F(UniqueRefTest, givenUniqueRefWithCustomDeleterInstance_whenMoveAssigning_thenHasSameDeleterInstance) {
int dummy = 0;
SetToDeleter deleter(4);
auto ref = nullcheck(std::unique_ptr<int, SetToDeleter>(&dummy, deleter)).value();
auto ref2 = nullcheck(std::unique_ptr<int, SetToDeleter>(&dummy, SetToDeleter(0))).value();
ref2 = std::move(ref);
EXPECT_EQ(4, ref2.get_deleter().value_);
}