mirror of
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809 lines
25 KiB
C++
809 lines
25 KiB
C++
//===- llvm/unittest/ADT/OptionalTest.cpp - Optional unit tests -----------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/Support/raw_ostream.h"
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#include "gtest/gtest-spi.h"
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#include "gtest/gtest.h"
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#include <array>
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using namespace llvm;
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static_assert(std::is_trivially_copyable<Optional<int>>::value,
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"trivially copyable");
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static_assert(std::is_trivially_copyable<Optional<std::array<int, 3>>>::value,
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"trivially copyable");
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void OptionalWorksInConstexpr() {
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constexpr auto x1 = Optional<int>();
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constexpr Optional<int> x2{};
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static_assert(!x1.hasValue() && !x2.hasValue(),
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"Default construction and hasValue() are contexpr");
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constexpr auto y1 = Optional<int>(3);
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constexpr Optional<int> y2{3};
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static_assert(y1.getValue() == y2.getValue() && y1.getValue() == 3,
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"Construction with value and getValue() are constexpr");
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static_assert(Optional<int>{3} >= 2 && Optional<int>{1} < Optional<int>{2},
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"Comparisons work in constexpr");
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}
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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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static_assert(
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!std::is_trivially_copyable<Optional<NonDefaultConstructible>>::value,
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"not trivially copyable");
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TEST(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(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(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(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(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(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(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(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(OptionalTest, InPlaceConstructionNonDefaultConstructibleTest) {
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NonDefaultConstructible::ResetCounts();
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{ Optional<NonDefaultConstructible> A{in_place, 1}; }
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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(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 &) = delete;
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MultiArgConstructor(MultiArgConstructor &&) = delete;
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MultiArgConstructor &operator=(const MultiArgConstructor &) = delete;
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MultiArgConstructor &operator=(MultiArgConstructor &&) = delete;
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friend bool operator==(const MultiArgConstructor &LHS,
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const MultiArgConstructor &RHS) {
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return LHS.x == RHS.x && LHS.y == RHS.y;
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}
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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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static_assert(!std::is_trivially_copyable<Optional<MultiArgConstructor>>::value,
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"not trivially copyable");
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TEST(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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TEST(OptionalTest, InPlaceConstructionMultiArgConstructorTest) {
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MultiArgConstructor::ResetCounts();
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{
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Optional<MultiArgConstructor> A{in_place, 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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Optional<MultiArgConstructor> B{in_place, 5, false};
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EXPECT_TRUE(B.hasValue());
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EXPECT_EQ(5, B->x);
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EXPECT_EQ(-5, B->y);
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EXPECT_EQ(0u, MultiArgConstructor::Destructions);
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}
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EXPECT_EQ(2u, MultiArgConstructor::Destructions);
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}
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TEST(OptionalTest, InPlaceConstructionAndEmplaceEquivalentTest) {
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MultiArgConstructor::ResetCounts();
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{
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Optional<MultiArgConstructor> A{in_place, 1, 2};
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Optional<MultiArgConstructor> B;
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B.emplace(1, 2);
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EXPECT_EQ(0u, MultiArgConstructor::Destructions);
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ASSERT_EQ(A, B);
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}
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EXPECT_EQ(2u, 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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static_assert(!std::is_trivially_copyable<Optional<MoveOnly>>::value,
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"not trivially copyable");
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TEST(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(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(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_TRUE((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(0u, MoveOnly::Destructions);
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}
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TEST(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(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_TRUE((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(0u, MoveOnly::Destructions);
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}
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TEST(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(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_TRUE((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(0u, 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) = delete;
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};
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unsigned Immovable::Constructions = 0;
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unsigned Immovable::Destructions = 0;
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static_assert(!std::is_trivially_copyable<Optional<Immovable>>::value,
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"not trivially copyable");
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TEST(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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TEST(OptionalTest, ImmovableInPlaceConstruction) {
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Immovable::ResetCounts();
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Optional<Immovable> A{in_place, 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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// Craft a class which is_trivially_copyable, but not
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// is_trivially_copy_constructible.
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struct NonTCopy {
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NonTCopy() = default;
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// Delete the volatile copy constructor to engage the "rule of 3" and delete
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// any unspecified copy assignment or constructor.
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NonTCopy(volatile NonTCopy const &) = delete;
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// Leave the non-volatile default copy constructor unspecified (deleted by
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// rule of 3)
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// This template can serve as the copy constructor, but isn't chosen
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// by =default in a class with a 'NonTCopy' member.
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template <typename Self = NonTCopy>
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NonTCopy(Self const &Other) : Val(Other.Val) {}
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NonTCopy &operator=(NonTCopy const &) = default;
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int Val{0};
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};
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#if defined(_MSC_VER) && _MSC_VER >= 1927 && !defined(__clang__)
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// Currently only true on recent MSVC releases.
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static_assert(std::is_trivially_copyable<NonTCopy>::value,
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"Expect NonTCopy to be trivially copyable");
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static_assert(!std::is_trivially_copy_constructible<NonTCopy>::value,
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"Expect NonTCopy not to be trivially copy constructible.");
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#endif // defined(_MSC_VER) && _MSC_VER >= 1927
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TEST(OptionalTest, DeletedCopyConstructor) {
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// Expect compile to fail if 'trivial' version of
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// optional_detail::OptionalStorage is chosen.
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using NonTCopyOptT = Optional<NonTCopy>;
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NonTCopyOptT NonTCopy1;
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// Check that the Optional can be copy constructed.
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NonTCopyOptT NonTCopy2{NonTCopy1};
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// Check that the Optional can be copy assigned.
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NonTCopy1 = NonTCopy2;
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}
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// Craft a class which is_trivially_copyable, but not
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// is_trivially_copy_assignable.
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class NonTAssign {
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public:
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NonTAssign() = default;
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NonTAssign(NonTAssign const &) = default;
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|
|
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// Delete the volatile copy assignment to engage the "rule of 3" and delete
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// any unspecified copy assignment or constructor.
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NonTAssign &operator=(volatile NonTAssign const &) = delete;
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|
|
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// Leave the non-volatile default copy assignment unspecified (deleted by rule
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// of 3).
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|
|
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// This template can serve as the copy assignment, but isn't chosen
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// by =default in a class with a 'NonTAssign' member.
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template <typename Self = NonTAssign>
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NonTAssign &operator=(Self const &Other) {
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A = Other.A;
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return *this;
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}
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|
|
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int A{0};
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};
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|
|
|
#if defined(_MSC_VER) && _MSC_VER >= 1927 && !defined(__clang__)
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// Currently only true on recent MSVC releases.
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static_assert(std::is_trivially_copyable<NonTAssign>::value,
|
|
"Expect NonTAssign to be trivially copyable");
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|
|
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static_assert(!std::is_trivially_copy_assignable<NonTAssign>::value,
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|
"Expect NonTAssign not to be trivially assignable.");
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#endif // defined(_MSC_VER) && _MSC_VER >= 1927
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|
|
|
TEST(OptionalTest, DeletedCopyAssignment) {
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|
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// Expect compile to fail if 'trivial' version of
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// optional_detail::OptionalStorage is chosen.
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using NonTAssignOptT = Optional<NonTAssign>;
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NonTAssignOptT NonTAssign1;
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|
|
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// Check that the Optional can be copy constructed.
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NonTAssignOptT NonTAssign2{NonTAssign1};
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|
|
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// Check that the Optional can be copy assigned.
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NonTAssign1 = NonTAssign2;
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}
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|
|
|
struct NoTMove {
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|
NoTMove() = default;
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|
NoTMove(NoTMove const &) = default;
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|
NoTMove &operator=(NoTMove const &) = default;
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|
|
|
// Delete move constructor / assignment. Compiler should fall-back to the
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|
// trivial copy constructor / assignment in the trivial OptionalStorage
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// specialization.
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|
NoTMove(NoTMove &&) = delete;
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|
NoTMove &operator=(NoTMove &&) = delete;
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|
|
|
int Val{0};
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|
};
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|
|
|
TEST(OptionalTest, DeletedMoveConstructor) {
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|
using NoTMoveOptT = Optional<NoTMove>;
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|
|
|
NoTMoveOptT NonTMove1;
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|
NoTMoveOptT NonTMove2{std::move(NonTMove1)};
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|
|
|
NonTMove1 = std::move(NonTMove2);
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|
|
|
static_assert(
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|
std::is_trivially_copyable<NoTMoveOptT>::value,
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|
"Expect Optional<NoTMove> to still use the trivial specialization "
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|
"of OptionalStorage despite the deleted move constructor / assignment.");
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|
}
|
|
|
|
class NoCopyStringMap {
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|
public:
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|
NoCopyStringMap() = default;
|
|
|
|
private:
|
|
llvm::StringMap<std::unique_ptr<int>> Map;
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|
};
|
|
|
|
TEST(OptionalTest, DeletedCopyStringMap) {
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|
// Old versions of gcc (7.3 and prior) instantiate the copy constructor when
|
|
// std::is_trivially_copyable is instantiated. This test will fail
|
|
// compilation if std::is_trivially_copyable is used in the OptionalStorage
|
|
// specialization condition by gcc <= 7.3.
|
|
Optional<NoCopyStringMap> TestInstantiation;
|
|
}
|
|
|
|
#if LLVM_HAS_RVALUE_REFERENCE_THIS
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|
|
|
TEST(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);
|
|
|
|
A = MoveOnly(5);
|
|
MoveOnly::ResetCounts();
|
|
EXPECT_EQ(5, std::move(A).getValueOr(MoveOnly(42)).val);
|
|
EXPECT_EQ(1u, MoveOnly::MoveConstructions);
|
|
EXPECT_EQ(0u, MoveOnly::MoveAssignments);
|
|
EXPECT_EQ(2u, MoveOnly::Destructions);
|
|
}
|
|
|
|
#endif // LLVM_HAS_RVALUE_REFERENCE_THIS
|
|
|
|
struct EqualTo {
|
|
template <typename T, typename U> static bool apply(const T &X, const U &Y) {
|
|
return X == Y;
|
|
}
|
|
};
|
|
|
|
struct NotEqualTo {
|
|
template <typename T, typename U> static bool apply(const T &X, const U &Y) {
|
|
return X != Y;
|
|
}
|
|
};
|
|
|
|
struct Less {
|
|
template <typename T, typename U> static bool apply(const T &X, const U &Y) {
|
|
return X < Y;
|
|
}
|
|
};
|
|
|
|
struct Greater {
|
|
template <typename T, typename U> static bool apply(const T &X, const U &Y) {
|
|
return X > Y;
|
|
}
|
|
};
|
|
|
|
struct LessEqual {
|
|
template <typename T, typename U> static bool apply(const T &X, const U &Y) {
|
|
return X <= Y;
|
|
}
|
|
};
|
|
|
|
struct GreaterEqual {
|
|
template <typename T, typename U> static bool apply(const T &X, const U &Y) {
|
|
return X >= Y;
|
|
}
|
|
};
|
|
|
|
template <typename OperatorT, typename T>
|
|
void CheckRelation(const Optional<T> &Lhs, const Optional<T> &Rhs,
|
|
bool Expected) {
|
|
EXPECT_EQ(Expected, OperatorT::apply(Lhs, Rhs));
|
|
|
|
if (Lhs)
|
|
EXPECT_EQ(Expected, OperatorT::apply(*Lhs, Rhs));
|
|
else
|
|
EXPECT_EQ(Expected, OperatorT::apply(None, Rhs));
|
|
|
|
if (Rhs)
|
|
EXPECT_EQ(Expected, OperatorT::apply(Lhs, *Rhs));
|
|
else
|
|
EXPECT_EQ(Expected, OperatorT::apply(Lhs, None));
|
|
}
|
|
|
|
struct EqualityMock {};
|
|
const Optional<EqualityMock> NoneEq, EqualityLhs((EqualityMock())),
|
|
EqualityRhs((EqualityMock()));
|
|
bool IsEqual;
|
|
|
|
bool operator==(const EqualityMock &Lhs, const EqualityMock &Rhs) {
|
|
EXPECT_EQ(&*EqualityLhs, &Lhs);
|
|
EXPECT_EQ(&*EqualityRhs, &Rhs);
|
|
return IsEqual;
|
|
}
|
|
|
|
TEST(OptionalTest, OperatorEqual) {
|
|
CheckRelation<EqualTo>(NoneEq, NoneEq, true);
|
|
CheckRelation<EqualTo>(NoneEq, EqualityRhs, false);
|
|
CheckRelation<EqualTo>(EqualityLhs, NoneEq, false);
|
|
|
|
IsEqual = false;
|
|
CheckRelation<EqualTo>(EqualityLhs, EqualityRhs, IsEqual);
|
|
IsEqual = true;
|
|
CheckRelation<EqualTo>(EqualityLhs, EqualityRhs, IsEqual);
|
|
}
|
|
|
|
TEST(OptionalTest, OperatorNotEqual) {
|
|
CheckRelation<NotEqualTo>(NoneEq, NoneEq, false);
|
|
CheckRelation<NotEqualTo>(NoneEq, EqualityRhs, true);
|
|
CheckRelation<NotEqualTo>(EqualityLhs, NoneEq, true);
|
|
|
|
IsEqual = false;
|
|
CheckRelation<NotEqualTo>(EqualityLhs, EqualityRhs, !IsEqual);
|
|
IsEqual = true;
|
|
CheckRelation<NotEqualTo>(EqualityLhs, EqualityRhs, !IsEqual);
|
|
}
|
|
|
|
struct InequalityMock {};
|
|
const Optional<InequalityMock> NoneIneq, InequalityLhs((InequalityMock())),
|
|
InequalityRhs((InequalityMock()));
|
|
bool IsLess;
|
|
|
|
bool operator<(const InequalityMock &Lhs, const InequalityMock &Rhs) {
|
|
EXPECT_EQ(&*InequalityLhs, &Lhs);
|
|
EXPECT_EQ(&*InequalityRhs, &Rhs);
|
|
return IsLess;
|
|
}
|
|
|
|
TEST(OptionalTest, OperatorLess) {
|
|
CheckRelation<Less>(NoneIneq, NoneIneq, false);
|
|
CheckRelation<Less>(NoneIneq, InequalityRhs, true);
|
|
CheckRelation<Less>(InequalityLhs, NoneIneq, false);
|
|
|
|
IsLess = false;
|
|
CheckRelation<Less>(InequalityLhs, InequalityRhs, IsLess);
|
|
IsLess = true;
|
|
CheckRelation<Less>(InequalityLhs, InequalityRhs, IsLess);
|
|
}
|
|
|
|
TEST(OptionalTest, OperatorGreater) {
|
|
CheckRelation<Greater>(NoneIneq, NoneIneq, false);
|
|
CheckRelation<Greater>(NoneIneq, InequalityRhs, false);
|
|
CheckRelation<Greater>(InequalityLhs, NoneIneq, true);
|
|
|
|
IsLess = false;
|
|
CheckRelation<Greater>(InequalityRhs, InequalityLhs, IsLess);
|
|
IsLess = true;
|
|
CheckRelation<Greater>(InequalityRhs, InequalityLhs, IsLess);
|
|
}
|
|
|
|
TEST(OptionalTest, OperatorLessEqual) {
|
|
CheckRelation<LessEqual>(NoneIneq, NoneIneq, true);
|
|
CheckRelation<LessEqual>(NoneIneq, InequalityRhs, true);
|
|
CheckRelation<LessEqual>(InequalityLhs, NoneIneq, false);
|
|
|
|
IsLess = false;
|
|
CheckRelation<LessEqual>(InequalityRhs, InequalityLhs, !IsLess);
|
|
IsLess = true;
|
|
CheckRelation<LessEqual>(InequalityRhs, InequalityLhs, !IsLess);
|
|
}
|
|
|
|
TEST(OptionalTest, OperatorGreaterEqual) {
|
|
CheckRelation<GreaterEqual>(NoneIneq, NoneIneq, true);
|
|
CheckRelation<GreaterEqual>(NoneIneq, InequalityRhs, false);
|
|
CheckRelation<GreaterEqual>(InequalityLhs, NoneIneq, true);
|
|
|
|
IsLess = false;
|
|
CheckRelation<GreaterEqual>(InequalityLhs, InequalityRhs, !IsLess);
|
|
IsLess = true;
|
|
CheckRelation<GreaterEqual>(InequalityLhs, InequalityRhs, !IsLess);
|
|
}
|
|
|
|
struct ComparableAndStreamable {
|
|
friend bool operator==(ComparableAndStreamable,
|
|
ComparableAndStreamable) LLVM_ATTRIBUTE_USED {
|
|
return true;
|
|
}
|
|
|
|
friend raw_ostream &operator<<(raw_ostream &OS, ComparableAndStreamable) {
|
|
return OS << "ComparableAndStreamable";
|
|
}
|
|
|
|
static Optional<ComparableAndStreamable> get() {
|
|
return ComparableAndStreamable();
|
|
}
|
|
};
|
|
|
|
TEST(OptionalTest, StreamOperator) {
|
|
auto to_string = [](Optional<ComparableAndStreamable> O) {
|
|
SmallString<16> S;
|
|
raw_svector_ostream OS(S);
|
|
OS << O;
|
|
return S;
|
|
};
|
|
EXPECT_EQ("ComparableAndStreamable",
|
|
to_string(ComparableAndStreamable::get()));
|
|
EXPECT_EQ("None", to_string(None));
|
|
}
|
|
|
|
struct Comparable {
|
|
friend bool operator==(Comparable, Comparable) LLVM_ATTRIBUTE_USED {
|
|
return true;
|
|
}
|
|
static Optional<Comparable> get() { return Comparable(); }
|
|
};
|
|
|
|
TEST(OptionalTest, UseInUnitTests) {
|
|
// Test that we invoke the streaming operators when pretty-printing values in
|
|
// EXPECT macros.
|
|
EXPECT_NONFATAL_FAILURE(EXPECT_EQ(llvm::None, ComparableAndStreamable::get()),
|
|
"Expected equality of these values:\n"
|
|
" llvm::None\n"
|
|
" Which is: None\n"
|
|
" ComparableAndStreamable::get()\n"
|
|
" Which is: ComparableAndStreamable");
|
|
|
|
// Test that it is still possible to compare objects which do not have a
|
|
// custom streaming operator.
|
|
EXPECT_NONFATAL_FAILURE(EXPECT_EQ(llvm::None, Comparable::get()), "object");
|
|
}
|
|
|
|
TEST(OptionalTest, HashValue) {
|
|
// Check that None, false, and true all hash differently.
|
|
Optional<bool> B, B0 = false, B1 = true;
|
|
EXPECT_NE(hash_value(B0), hash_value(B));
|
|
EXPECT_NE(hash_value(B1), hash_value(B));
|
|
EXPECT_NE(hash_value(B1), hash_value(B0));
|
|
|
|
// Check that None, 0, and 1 all hash differently.
|
|
Optional<int> I, I0 = 0, I1 = 1;
|
|
EXPECT_NE(hash_value(I0), hash_value(I));
|
|
EXPECT_NE(hash_value(I1), hash_value(I));
|
|
EXPECT_NE(hash_value(I1), hash_value(I0));
|
|
|
|
// Check None hash the same way regardless of type.
|
|
EXPECT_EQ(hash_value(B), hash_value(I));
|
|
}
|
|
|
|
} // end anonymous namespace
|