llvm-6502/unittests/ADT/OptionalTest.cpp
2013-02-21 07:58:45 +00:00

285 lines
9.2 KiB
C++

//===- llvm/unittest/ADT/OptionalTest.cpp - Optional unit tests -----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "gtest/gtest.h"
#include "llvm/ADT/Optional.h"
using namespace llvm;
namespace {
struct NonDefaultConstructible {
static unsigned CopyConstructions;
static unsigned Destructions;
static unsigned CopyAssignments;
explicit NonDefaultConstructible(int) {
}
NonDefaultConstructible(const NonDefaultConstructible&) {
++CopyConstructions;
}
NonDefaultConstructible &operator=(const NonDefaultConstructible&) {
++CopyAssignments;
return *this;
}
~NonDefaultConstructible() {
++Destructions;
}
static void ResetCounts() {
CopyConstructions = 0;
Destructions = 0;
CopyAssignments = 0;
}
};
unsigned NonDefaultConstructible::CopyConstructions = 0;
unsigned NonDefaultConstructible::Destructions = 0;
unsigned NonDefaultConstructible::CopyAssignments = 0;
// Test fixture
class OptionalTest : public testing::Test {
};
TEST_F(OptionalTest, NonDefaultConstructibleTest) {
Optional<NonDefaultConstructible> O;
EXPECT_FALSE(O);
}
TEST_F(OptionalTest, ResetTest) {
NonDefaultConstructible::ResetCounts();
Optional<NonDefaultConstructible> O(NonDefaultConstructible(3));
EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
NonDefaultConstructible::ResetCounts();
O.reset();
EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
}
TEST_F(OptionalTest, InitializationLeakTest) {
NonDefaultConstructible::ResetCounts();
Optional<NonDefaultConstructible>(NonDefaultConstructible(3));
EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(2u, NonDefaultConstructible::Destructions);
}
TEST_F(OptionalTest, CopyConstructionTest) {
NonDefaultConstructible::ResetCounts();
{
Optional<NonDefaultConstructible> A(NonDefaultConstructible(3));
EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
NonDefaultConstructible::ResetCounts();
Optional<NonDefaultConstructible> B(A);
EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
NonDefaultConstructible::ResetCounts();
}
EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(2u, NonDefaultConstructible::Destructions);
}
TEST_F(OptionalTest, ConstructingCopyAssignmentTest) {
NonDefaultConstructible::ResetCounts();
{
Optional<NonDefaultConstructible> A(NonDefaultConstructible(3));
Optional<NonDefaultConstructible> B;
EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
NonDefaultConstructible::ResetCounts();
B = A;
EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
NonDefaultConstructible::ResetCounts();
}
EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(2u, NonDefaultConstructible::Destructions);
}
TEST_F(OptionalTest, CopyingCopyAssignmentTest) {
NonDefaultConstructible::ResetCounts();
{
Optional<NonDefaultConstructible> A(NonDefaultConstructible(3));
Optional<NonDefaultConstructible> B(NonDefaultConstructible(4));
EXPECT_EQ(2u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(2u, NonDefaultConstructible::Destructions);
NonDefaultConstructible::ResetCounts();
B = A;
EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(1u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
NonDefaultConstructible::ResetCounts();
}
EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(2u, NonDefaultConstructible::Destructions);
}
TEST_F(OptionalTest, DeletingCopyAssignmentTest) {
NonDefaultConstructible::ResetCounts();
{
Optional<NonDefaultConstructible> A;
Optional<NonDefaultConstructible> B(NonDefaultConstructible(3));
EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
NonDefaultConstructible::ResetCounts();
B = A;
EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
NonDefaultConstructible::ResetCounts();
}
EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
}
TEST_F(OptionalTest, NullCopyConstructionTest) {
NonDefaultConstructible::ResetCounts();
{
Optional<NonDefaultConstructible> A;
Optional<NonDefaultConstructible> B;
EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
NonDefaultConstructible::ResetCounts();
B = A;
EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
NonDefaultConstructible::ResetCounts();
}
EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
}
#if LLVM_HAS_RVALUE_REFERENCES
struct MoveOnly {
static unsigned MoveConstructions;
static unsigned Destructions;
static unsigned MoveAssignments;
int val;
explicit MoveOnly(int val) : val(val) {
}
MoveOnly(MoveOnly&& other) {
val = other.val;
++MoveConstructions;
}
MoveOnly &operator=(MoveOnly&& other) {
val = other.val;
++MoveAssignments;
return *this;
}
~MoveOnly() {
++Destructions;
}
static void ResetCounts() {
MoveConstructions = 0;
Destructions = 0;
MoveAssignments = 0;
}
};
unsigned MoveOnly::MoveConstructions = 0;
unsigned MoveOnly::Destructions = 0;
unsigned MoveOnly::MoveAssignments = 0;
TEST_F(OptionalTest, MoveOnlyNull) {
MoveOnly::ResetCounts();
Optional<MoveOnly> O;
EXPECT_EQ(0u, MoveOnly::MoveConstructions);
EXPECT_EQ(0u, MoveOnly::MoveAssignments);
EXPECT_EQ(0u, MoveOnly::Destructions);
}
TEST_F(OptionalTest, MoveOnlyConstruction) {
MoveOnly::ResetCounts();
Optional<MoveOnly> O(MoveOnly(3));
EXPECT_TRUE((bool)O);
EXPECT_EQ(3, O->val);
EXPECT_EQ(1u, MoveOnly::MoveConstructions);
EXPECT_EQ(0u, MoveOnly::MoveAssignments);
EXPECT_EQ(1u, MoveOnly::Destructions);
}
TEST_F(OptionalTest, MoveOnlyMoveConstruction) {
Optional<MoveOnly> A(MoveOnly(3));
MoveOnly::ResetCounts();
Optional<MoveOnly> B(std::move(A));
EXPECT_FALSE((bool)A);
EXPECT_TRUE((bool)B);
EXPECT_EQ(3, B->val);
EXPECT_EQ(1u, MoveOnly::MoveConstructions);
EXPECT_EQ(0u, MoveOnly::MoveAssignments);
EXPECT_EQ(1u, MoveOnly::Destructions);
}
TEST_F(OptionalTest, MoveOnlyAssignment) {
MoveOnly::ResetCounts();
Optional<MoveOnly> O;
O = MoveOnly(3);
EXPECT_TRUE((bool)O);
EXPECT_EQ(3, O->val);
EXPECT_EQ(1u, MoveOnly::MoveConstructions);
EXPECT_EQ(0u, MoveOnly::MoveAssignments);
EXPECT_EQ(1u, MoveOnly::Destructions);
}
TEST_F(OptionalTest, MoveOnlyInitializingAssignment) {
Optional<MoveOnly> A(MoveOnly(3));
Optional<MoveOnly> B;
MoveOnly::ResetCounts();
B = std::move(A);
EXPECT_FALSE((bool)A);
EXPECT_TRUE((bool)B);
EXPECT_EQ(3, B->val);
EXPECT_EQ(1u, MoveOnly::MoveConstructions);
EXPECT_EQ(0u, MoveOnly::MoveAssignments);
EXPECT_EQ(1u, MoveOnly::Destructions);
}
TEST_F(OptionalTest, MoveOnlyNullingAssignment) {
Optional<MoveOnly> A;
Optional<MoveOnly> B(MoveOnly(3));
MoveOnly::ResetCounts();
B = std::move(A);
EXPECT_FALSE((bool)A);
EXPECT_FALSE((bool)B);
EXPECT_EQ(0u, MoveOnly::MoveConstructions);
EXPECT_EQ(0u, MoveOnly::MoveAssignments);
EXPECT_EQ(1u, MoveOnly::Destructions);
}
TEST_F(OptionalTest, MoveOnlyAssigningAssignment) {
Optional<MoveOnly> A(MoveOnly(3));
Optional<MoveOnly> B(MoveOnly(4));
MoveOnly::ResetCounts();
B = std::move(A);
EXPECT_FALSE((bool)A);
EXPECT_TRUE((bool)B);
EXPECT_EQ(3, B->val);
EXPECT_EQ(0u, MoveOnly::MoveConstructions);
EXPECT_EQ(1u, MoveOnly::MoveAssignments);
EXPECT_EQ(1u, MoveOnly::Destructions);
}
#endif
} // end anonymous namespace