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42f40dbbef
Addressing post commit review feedback from Justin Bogner. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218821 91177308-0d34-0410-b5e6-96231b3b80d8
382 lines
12 KiB
C++
382 lines
12 KiB
C++
//===- llvm/unittest/ADT/OptionalTest.cpp - Optional unit tests -----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "gtest/gtest.h"
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#include "llvm/ADT/Optional.h"
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using namespace llvm;
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namespace {
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struct NonDefaultConstructible {
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static unsigned CopyConstructions;
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static unsigned Destructions;
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static unsigned CopyAssignments;
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explicit NonDefaultConstructible(int) {
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}
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NonDefaultConstructible(const NonDefaultConstructible&) {
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++CopyConstructions;
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}
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NonDefaultConstructible &operator=(const NonDefaultConstructible&) {
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++CopyAssignments;
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return *this;
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}
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~NonDefaultConstructible() {
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++Destructions;
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}
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static void ResetCounts() {
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CopyConstructions = 0;
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Destructions = 0;
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CopyAssignments = 0;
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}
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};
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unsigned NonDefaultConstructible::CopyConstructions = 0;
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unsigned NonDefaultConstructible::Destructions = 0;
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unsigned NonDefaultConstructible::CopyAssignments = 0;
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// Test fixture
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class OptionalTest : public testing::Test {
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};
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TEST_F(OptionalTest, NonDefaultConstructibleTest) {
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Optional<NonDefaultConstructible> O;
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EXPECT_FALSE(O);
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}
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TEST_F(OptionalTest, ResetTest) {
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NonDefaultConstructible::ResetCounts();
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Optional<NonDefaultConstructible> O(NonDefaultConstructible(3));
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EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
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NonDefaultConstructible::ResetCounts();
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O.reset();
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EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
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}
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TEST_F(OptionalTest, InitializationLeakTest) {
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NonDefaultConstructible::ResetCounts();
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Optional<NonDefaultConstructible>(NonDefaultConstructible(3));
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EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(2u, NonDefaultConstructible::Destructions);
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}
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TEST_F(OptionalTest, CopyConstructionTest) {
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NonDefaultConstructible::ResetCounts();
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{
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Optional<NonDefaultConstructible> A(NonDefaultConstructible(3));
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EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
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NonDefaultConstructible::ResetCounts();
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Optional<NonDefaultConstructible> B(A);
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EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
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NonDefaultConstructible::ResetCounts();
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}
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EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(2u, NonDefaultConstructible::Destructions);
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}
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TEST_F(OptionalTest, ConstructingCopyAssignmentTest) {
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NonDefaultConstructible::ResetCounts();
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{
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Optional<NonDefaultConstructible> A(NonDefaultConstructible(3));
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Optional<NonDefaultConstructible> B;
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EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
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NonDefaultConstructible::ResetCounts();
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B = A;
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EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
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NonDefaultConstructible::ResetCounts();
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}
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EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(2u, NonDefaultConstructible::Destructions);
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}
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TEST_F(OptionalTest, CopyingCopyAssignmentTest) {
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NonDefaultConstructible::ResetCounts();
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{
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Optional<NonDefaultConstructible> A(NonDefaultConstructible(3));
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Optional<NonDefaultConstructible> B(NonDefaultConstructible(4));
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EXPECT_EQ(2u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(2u, NonDefaultConstructible::Destructions);
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NonDefaultConstructible::ResetCounts();
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B = A;
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EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(1u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
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NonDefaultConstructible::ResetCounts();
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}
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EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(2u, NonDefaultConstructible::Destructions);
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}
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TEST_F(OptionalTest, DeletingCopyAssignmentTest) {
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NonDefaultConstructible::ResetCounts();
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{
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Optional<NonDefaultConstructible> A;
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Optional<NonDefaultConstructible> B(NonDefaultConstructible(3));
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EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
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NonDefaultConstructible::ResetCounts();
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B = A;
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EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
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NonDefaultConstructible::ResetCounts();
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}
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EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
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}
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TEST_F(OptionalTest, NullCopyConstructionTest) {
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NonDefaultConstructible::ResetCounts();
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{
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Optional<NonDefaultConstructible> A;
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Optional<NonDefaultConstructible> B;
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EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
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NonDefaultConstructible::ResetCounts();
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B = A;
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EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
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NonDefaultConstructible::ResetCounts();
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}
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EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
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EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
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EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
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}
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TEST_F(OptionalTest, GetValueOr) {
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Optional<int> A;
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EXPECT_EQ(42, A.getValueOr(42));
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A = 5;
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EXPECT_EQ(5, A.getValueOr(42));
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}
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struct MultiArgConstructor {
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int x, y;
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MultiArgConstructor(int x, int y) : x(x), y(y) {}
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explicit MultiArgConstructor(int x, bool positive)
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: x(x), y(positive ? x : -x) {}
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MultiArgConstructor(const MultiArgConstructor &) LLVM_DELETED_FUNCTION;
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MultiArgConstructor(MultiArgConstructor &&) LLVM_DELETED_FUNCTION;
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MultiArgConstructor &operator=(const MultiArgConstructor &) LLVM_DELETED_FUNCTION;
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MultiArgConstructor &operator=(MultiArgConstructor &&) LLVM_DELETED_FUNCTION;
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static unsigned Destructions;
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~MultiArgConstructor() {
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++Destructions;
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}
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static void ResetCounts() {
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Destructions = 0;
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}
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};
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unsigned MultiArgConstructor::Destructions = 0;
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TEST_F(OptionalTest, Emplace) {
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MultiArgConstructor::ResetCounts();
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Optional<MultiArgConstructor> A;
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A.emplace(1, 2);
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EXPECT_TRUE(A.hasValue());
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EXPECT_EQ(1, A->x);
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EXPECT_EQ(2, A->y);
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EXPECT_EQ(0u, MultiArgConstructor::Destructions);
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A.emplace(5, false);
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EXPECT_TRUE(A.hasValue());
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EXPECT_EQ(5, A->x);
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EXPECT_EQ(-5, A->y);
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EXPECT_EQ(1u, MultiArgConstructor::Destructions);
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}
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struct MoveOnly {
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static unsigned MoveConstructions;
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static unsigned Destructions;
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static unsigned MoveAssignments;
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int val;
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explicit MoveOnly(int val) : val(val) {
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}
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MoveOnly(MoveOnly&& other) {
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val = other.val;
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++MoveConstructions;
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}
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MoveOnly &operator=(MoveOnly&& other) {
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val = other.val;
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++MoveAssignments;
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return *this;
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}
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~MoveOnly() {
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++Destructions;
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}
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static void ResetCounts() {
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MoveConstructions = 0;
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Destructions = 0;
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MoveAssignments = 0;
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}
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};
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unsigned MoveOnly::MoveConstructions = 0;
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unsigned MoveOnly::Destructions = 0;
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unsigned MoveOnly::MoveAssignments = 0;
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TEST_F(OptionalTest, MoveOnlyNull) {
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MoveOnly::ResetCounts();
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Optional<MoveOnly> O;
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EXPECT_EQ(0u, MoveOnly::MoveConstructions);
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EXPECT_EQ(0u, MoveOnly::MoveAssignments);
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EXPECT_EQ(0u, MoveOnly::Destructions);
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}
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TEST_F(OptionalTest, MoveOnlyConstruction) {
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MoveOnly::ResetCounts();
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Optional<MoveOnly> O(MoveOnly(3));
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EXPECT_TRUE((bool)O);
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EXPECT_EQ(3, O->val);
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EXPECT_EQ(1u, MoveOnly::MoveConstructions);
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EXPECT_EQ(0u, MoveOnly::MoveAssignments);
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EXPECT_EQ(1u, MoveOnly::Destructions);
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}
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TEST_F(OptionalTest, MoveOnlyMoveConstruction) {
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Optional<MoveOnly> A(MoveOnly(3));
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MoveOnly::ResetCounts();
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Optional<MoveOnly> B(std::move(A));
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EXPECT_FALSE((bool)A);
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EXPECT_TRUE((bool)B);
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EXPECT_EQ(3, B->val);
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EXPECT_EQ(1u, MoveOnly::MoveConstructions);
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EXPECT_EQ(0u, MoveOnly::MoveAssignments);
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EXPECT_EQ(1u, MoveOnly::Destructions);
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}
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TEST_F(OptionalTest, MoveOnlyAssignment) {
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MoveOnly::ResetCounts();
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Optional<MoveOnly> O;
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O = MoveOnly(3);
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EXPECT_TRUE((bool)O);
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EXPECT_EQ(3, O->val);
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EXPECT_EQ(1u, MoveOnly::MoveConstructions);
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EXPECT_EQ(0u, MoveOnly::MoveAssignments);
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EXPECT_EQ(1u, MoveOnly::Destructions);
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}
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TEST_F(OptionalTest, MoveOnlyInitializingAssignment) {
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Optional<MoveOnly> A(MoveOnly(3));
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Optional<MoveOnly> B;
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MoveOnly::ResetCounts();
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B = std::move(A);
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EXPECT_FALSE((bool)A);
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EXPECT_TRUE((bool)B);
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EXPECT_EQ(3, B->val);
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EXPECT_EQ(1u, MoveOnly::MoveConstructions);
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EXPECT_EQ(0u, MoveOnly::MoveAssignments);
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EXPECT_EQ(1u, MoveOnly::Destructions);
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}
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TEST_F(OptionalTest, MoveOnlyNullingAssignment) {
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Optional<MoveOnly> A;
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Optional<MoveOnly> B(MoveOnly(3));
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MoveOnly::ResetCounts();
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B = std::move(A);
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EXPECT_FALSE((bool)A);
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EXPECT_FALSE((bool)B);
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EXPECT_EQ(0u, MoveOnly::MoveConstructions);
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EXPECT_EQ(0u, MoveOnly::MoveAssignments);
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EXPECT_EQ(1u, MoveOnly::Destructions);
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}
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TEST_F(OptionalTest, MoveOnlyAssigningAssignment) {
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Optional<MoveOnly> A(MoveOnly(3));
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Optional<MoveOnly> B(MoveOnly(4));
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MoveOnly::ResetCounts();
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B = std::move(A);
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EXPECT_FALSE((bool)A);
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EXPECT_TRUE((bool)B);
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EXPECT_EQ(3, B->val);
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EXPECT_EQ(0u, MoveOnly::MoveConstructions);
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EXPECT_EQ(1u, MoveOnly::MoveAssignments);
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EXPECT_EQ(1u, MoveOnly::Destructions);
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}
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struct Immovable {
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static unsigned Constructions;
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static unsigned Destructions;
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int val;
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explicit Immovable(int val) : val(val) {
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++Constructions;
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}
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~Immovable() {
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++Destructions;
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}
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static void ResetCounts() {
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Constructions = 0;
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Destructions = 0;
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}
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private:
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// This should disable all move/copy operations.
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Immovable(Immovable&& other) LLVM_DELETED_FUNCTION;
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};
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unsigned Immovable::Constructions = 0;
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unsigned Immovable::Destructions = 0;
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TEST_F(OptionalTest, ImmovableEmplace) {
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Optional<Immovable> A;
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Immovable::ResetCounts();
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A.emplace(4);
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EXPECT_TRUE((bool)A);
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EXPECT_EQ(4, A->val);
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EXPECT_EQ(1u, Immovable::Constructions);
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EXPECT_EQ(0u, Immovable::Destructions);
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}
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#if LLVM_HAS_RVALUE_REFERENCE_THIS
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TEST_F(OptionalTest, MoveGetValueOr) {
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Optional<MoveOnly> A;
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MoveOnly::ResetCounts();
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EXPECT_EQ(42, std::move(A).getValueOr(MoveOnly(42)).val);
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EXPECT_EQ(1u, MoveOnly::MoveConstructions);
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EXPECT_EQ(0u, MoveOnly::MoveAssignments);
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EXPECT_EQ(2u, MoveOnly::Destructions);
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A = MoveOnly(5);
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MoveOnly::ResetCounts();
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EXPECT_EQ(5, std::move(A).getValueOr(MoveOnly(42)).val);
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EXPECT_EQ(1u, MoveOnly::MoveConstructions);
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EXPECT_EQ(0u, MoveOnly::MoveAssignments);
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EXPECT_EQ(2u, MoveOnly::Destructions);
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}
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#endif // LLVM_HAS_RVALUE_REFERENCE_THIS
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} // end anonymous namespace
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