Reland: Move wtf_unittests to platform/wtf/.

third_party/WebKit/Source/wtf/HashSetTest.cpp

Index: third_party/WebKit/Source/wtf/HashSetTest.cpp
diff --git a/third_party/WebKit/Source/wtf/HashSetTest.cpp b/third_party/WebKit/Source/wtf/HashSetTest.cpp
deleted file mode 100644
index 4d6e77cc89ae9e94c570b4694684d5af0615cadd..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/wtf/HashSetTest.cpp
+++ /dev/null
@@ -1,508 +0,0 @@
-/*
- * Copyright (C) 2012 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "wtf/HashSet.h"
-
-#include "testing/gtest/include/gtest/gtest.h"
-#include "wtf/PtrUtil.h"
-#include "wtf/RefCounted.h"
-#include <memory>
-
-namespace WTF {
-
-namespace {
-
-template <unsigned size>
-void testReserveCapacity();
-template <>
-void testReserveCapacity<0>() {}
-template <unsigned size>
-void testReserveCapacity() {
-  HashSet<int> testSet;
-
-  // Initial capacity is zero.
-  EXPECT_EQ(0UL, testSet.capacity());
-
-  testSet.reserveCapacityForSize(size);
-  const unsigned initialCapacity = testSet.capacity();
-  const unsigned minimumTableSize = HashTraits<int>::minimumTableSize;
-
-  // reserveCapacityForSize should respect minimumTableSize.
-  EXPECT_GE(initialCapacity, minimumTableSize);
-
-  // Adding items up to size should never change the capacity.
-  for (size_t i = 0; i < size; ++i) {
-    testSet.insert(i + 1);  // Avoid adding '0'.
-    EXPECT_EQ(initialCapacity, testSet.capacity());
-  }
-
-  // Adding items up to less than half the capacity should not change the
-  // capacity.
-  unsigned capacityLimit = initialCapacity / 2 - 1;
-  for (size_t i = size; i < capacityLimit; ++i) {
-    testSet.insert(i + 1);
-    EXPECT_EQ(initialCapacity, testSet.capacity());
-  }
-
-  // Adding one more item increases the capacity.
-  testSet.insert(capacityLimit + 1);
-  EXPECT_GT(testSet.capacity(), initialCapacity);
-
-  testReserveCapacity<size - 1>();
-}
-
-TEST(HashSetTest, ReserveCapacity) {
-  testReserveCapacity<128>();
-}
-
-struct Dummy {
-  Dummy(bool& deleted) : deleted(deleted) {}
-
-  ~Dummy() { deleted = true; }
-
-  bool& deleted;
-};
-
-TEST(HashSetTest, HashSetOwnPtr) {
-  bool deleted1 = false, deleted2 = false;
-
-  typedef HashSet<std::unique_ptr<Dummy>> OwnPtrSet;
-  OwnPtrSet set;
-
-  Dummy* ptr1 = new Dummy(deleted1);
-  {
-    // AddResult in a separate scope to avoid assertion hit,
-    // since we modify the container further.
-    HashSet<std::unique_ptr<Dummy>>::AddResult res1 =
-        set.insert(WTF::wrapUnique(ptr1));
-    EXPECT_EQ(ptr1, res1.storedValue->get());
-  }
-
-  EXPECT_FALSE(deleted1);
-  EXPECT_EQ(1UL, set.size());
-  OwnPtrSet::iterator it1 = set.find(ptr1);
-  EXPECT_NE(set.end(), it1);
-  EXPECT_EQ(ptr1, (*it1).get());
-
-  Dummy* ptr2 = new Dummy(deleted2);
-  {
-    HashSet<std::unique_ptr<Dummy>>::AddResult res2 =
-        set.insert(WTF::wrapUnique(ptr2));
-    EXPECT_EQ(res2.storedValue->get(), ptr2);
-  }
-
-  EXPECT_FALSE(deleted2);
-  EXPECT_EQ(2UL, set.size());
-  OwnPtrSet::iterator it2 = set.find(ptr2);
-  EXPECT_NE(set.end(), it2);
-  EXPECT_EQ(ptr2, (*it2).get());
-
-  set.erase(ptr1);
-  EXPECT_TRUE(deleted1);
-
-  set.clear();
-  EXPECT_TRUE(deleted2);
-  EXPECT_TRUE(set.isEmpty());
-
-  deleted1 = false;
-  deleted2 = false;
-  {
-    OwnPtrSet set;
-    set.insert(WTF::makeUnique<Dummy>(deleted1));
-    set.insert(WTF::makeUnique<Dummy>(deleted2));
-  }
-  EXPECT_TRUE(deleted1);
-  EXPECT_TRUE(deleted2);
-
-  deleted1 = false;
-  deleted2 = false;
-  std::unique_ptr<Dummy> ownPtr1;
-  std::unique_ptr<Dummy> ownPtr2;
-  ptr1 = new Dummy(deleted1);
-  ptr2 = new Dummy(deleted2);
-  {
-    OwnPtrSet set;
-    set.insert(WTF::wrapUnique(ptr1));
-    set.insert(WTF::wrapUnique(ptr2));
-    ownPtr1 = set.take(ptr1);
-    EXPECT_EQ(1UL, set.size());
-    ownPtr2 = set.takeAny();
-    EXPECT_TRUE(set.isEmpty());
-  }
-  EXPECT_FALSE(deleted1);
-  EXPECT_FALSE(deleted2);
-
-  EXPECT_EQ(ptr1, ownPtr1.get());
-  EXPECT_EQ(ptr2, ownPtr2.get());
-}
-
-class DummyRefCounted : public RefCounted<DummyRefCounted> {
- public:
-  DummyRefCounted(bool& isDeleted) : m_isDeleted(isDeleted) {
-    m_isDeleted = false;
-  }
-  ~DummyRefCounted() { m_isDeleted = true; }
-
-  void ref() {
-    WTF::RefCounted<DummyRefCounted>::ref();
-    ++s_refInvokesCount;
-  }
-
-  static int s_refInvokesCount;
-
- private:
-  bool& m_isDeleted;
-};
-
-int DummyRefCounted::s_refInvokesCount = 0;
-
-TEST(HashSetTest, HashSetRefPtr) {
-  bool isDeleted = false;
-  RefPtr<DummyRefCounted> ptr = adoptRef(new DummyRefCounted(isDeleted));
-  EXPECT_EQ(0, DummyRefCounted::s_refInvokesCount);
-  HashSet<RefPtr<DummyRefCounted>> set;
-  set.insert(ptr);
-  // Referenced only once (to store a copy in the container).
-  EXPECT_EQ(1, DummyRefCounted::s_refInvokesCount);
-
-  DummyRefCounted* rawPtr = ptr.get();
-
-  EXPECT_TRUE(set.contains(rawPtr));
-  EXPECT_NE(set.end(), set.find(rawPtr));
-  EXPECT_TRUE(set.contains(ptr));
-  EXPECT_NE(set.end(), set.find(ptr));
-
-  ptr.clear();
-  EXPECT_FALSE(isDeleted);
-
-  set.erase(rawPtr);
-  EXPECT_TRUE(isDeleted);
-  EXPECT_TRUE(set.isEmpty());
-  EXPECT_EQ(1, DummyRefCounted::s_refInvokesCount);
-}
-
-class CountCopy final {
- public:
-  static int* const kDeletedValue;
-
-  explicit CountCopy(int* counter = nullptr) : m_counter(counter) {}
-  CountCopy(const CountCopy& other) : m_counter(other.m_counter) {
-    if (m_counter && m_counter != kDeletedValue)
-      ++*m_counter;
-  }
-  CountCopy& operator=(const CountCopy& other) {
-    m_counter = other.m_counter;
-    if (m_counter && m_counter != kDeletedValue)
-      ++*m_counter;
-    return *this;
-  }
-  const int* counter() const { return m_counter; }
-
- private:
-  int* m_counter;
-};
-
-int* const CountCopy::kDeletedValue =
-    reinterpret_cast<int*>(static_cast<uintptr_t>(-1));
-
-struct CountCopyHashTraits : public GenericHashTraits<CountCopy> {
-  static const bool emptyValueIsZero = false;
-  static const bool hasIsEmptyValueFunction = true;
-  static bool isEmptyValue(const CountCopy& value) { return !value.counter(); }
-  static void constructDeletedValue(CountCopy& slot, bool) {
-    slot = CountCopy(CountCopy::kDeletedValue);
-  }
-  static bool isDeletedValue(const CountCopy& value) {
-    return value.counter() == CountCopy::kDeletedValue;
-  }
-};
-
-struct CountCopyHash : public PtrHash<const int*> {
-  static unsigned hash(const CountCopy& value) {
-    return PtrHash<const int>::hash(value.counter());
-  }
-  static bool equal(const CountCopy& left, const CountCopy& right) {
-    return PtrHash<const int>::equal(left.counter(), right.counter());
-  }
-  static const bool safeToCompareToEmptyOrDeleted = true;
-};
-
-}  // anonymous namespace
-
-template <>
-struct HashTraits<CountCopy> : public CountCopyHashTraits {};
-
-template <>
-struct DefaultHash<CountCopy> {
-  using Hash = CountCopyHash;
-};
-
-namespace {
-
-TEST(HashSetTest, MoveShouldNotMakeCopy) {
-  HashSet<CountCopy> set;
-  int counter = 0;
-  set.insert(CountCopy(&counter));
-
-  HashSet<CountCopy> other(set);
-  counter = 0;
-  set = std::move(other);
-  EXPECT_EQ(0, counter);
-
-  counter = 0;
-  HashSet<CountCopy> yetAnother(std::move(set));
-  EXPECT_EQ(0, counter);
-}
-
-class MoveOnly {
- public:
-  // kEmpty and kDeleted have special meanings when MoveOnly is used as the key
-  // of a hash table.
-  enum { kEmpty = 0, kDeleted = -1, kMovedOut = -2 };
-
-  explicit MoveOnly(int value = kEmpty, int id = 0)
-      : m_value(value), m_id(id) {}
-  MoveOnly(MoveOnly&& other) : m_value(other.m_value), m_id(other.m_id) {
-    other.m_value = kMovedOut;
-    other.m_id = 0;
-  }
-  MoveOnly& operator=(MoveOnly&& other) {
-    m_value = other.m_value;
-    m_id = other.m_id;
-    other.m_value = kMovedOut;
-    other.m_id = 0;
-    return *this;
-  }
-
-  int value() const { return m_value; }
-  // id() is used for distinguishing MoveOnlys with the same value().
-  int id() const { return m_id; }
-
- private:
-  MoveOnly(const MoveOnly&) = delete;
-  MoveOnly& operator=(const MoveOnly&) = delete;
-
-  int m_value;
-  int m_id;
-};
-
-struct MoveOnlyHashTraits : public GenericHashTraits<MoveOnly> {
-  // This is actually true, but we pretend that it's false to disable the
-  // optimization.
-  static const bool emptyValueIsZero = false;
-
-  static const bool hasIsEmptyValueFunction = true;
-  static bool isEmptyValue(const MoveOnly& value) {
-    return value.value() == MoveOnly::kEmpty;
-  }
-  static void constructDeletedValue(MoveOnly& slot, bool) {
-    slot = MoveOnly(MoveOnly::kDeleted);
-  }
-  static bool isDeletedValue(const MoveOnly& value) {
-    return value.value() == MoveOnly::kDeleted;
-  }
-};
-
-struct MoveOnlyHash {
-  static unsigned hash(const MoveOnly& value) {
-    return DefaultHash<int>::Hash::hash(value.value());
-  }
-  static bool equal(const MoveOnly& left, const MoveOnly& right) {
-    return DefaultHash<int>::Hash::equal(left.value(), right.value());
-  }
-  static const bool safeToCompareToEmptyOrDeleted = true;
-};
-
-}  // anonymous namespace
-
-template <>
-struct HashTraits<MoveOnly> : public MoveOnlyHashTraits {};
-
-template <>
-struct DefaultHash<MoveOnly> {
-  using Hash = MoveOnlyHash;
-};
-
-namespace {
-
-TEST(HashSetTest, MoveOnlyValue) {
-  using TheSet = HashSet<MoveOnly>;
-  TheSet set;
-  {
-    TheSet::AddResult addResult = set.insert(MoveOnly(1, 1));
-    EXPECT_TRUE(addResult.isNewEntry);
-    EXPECT_EQ(1, addResult.storedValue->value());
-    EXPECT_EQ(1, addResult.storedValue->id());
-  }
-  auto iter = set.find(MoveOnly(1));
-  ASSERT_TRUE(iter != set.end());
-  EXPECT_EQ(1, iter->value());
-
-  iter = set.find(MoveOnly(2));
-  EXPECT_TRUE(iter == set.end());
-
-  for (int i = 2; i < 32; ++i) {
-    TheSet::AddResult addResult = set.insert(MoveOnly(i, i));
-    EXPECT_TRUE(addResult.isNewEntry);
-    EXPECT_EQ(i, addResult.storedValue->value());
-    EXPECT_EQ(i, addResult.storedValue->id());
-  }
-
-  iter = set.find(MoveOnly(1));
-  ASSERT_TRUE(iter != set.end());
-  EXPECT_EQ(1, iter->value());
-  EXPECT_EQ(1, iter->id());
-
-  iter = set.find(MoveOnly(7));
-  ASSERT_TRUE(iter != set.end());
-  EXPECT_EQ(7, iter->value());
-  EXPECT_EQ(7, iter->id());
-
-  {
-    TheSet::AddResult addResult =
-        set.insert(MoveOnly(7, 777));  // With different ID for identification.
-    EXPECT_FALSE(addResult.isNewEntry);
-    EXPECT_EQ(7, addResult.storedValue->value());
-    EXPECT_EQ(7, addResult.storedValue->id());
-  }
-
-  set.erase(MoveOnly(11));
-  iter = set.find(MoveOnly(11));
-  EXPECT_TRUE(iter == set.end());
-
-  MoveOnly thirteen(set.take(MoveOnly(13)));
-  EXPECT_EQ(13, thirteen.value());
-  EXPECT_EQ(13, thirteen.id());
-  iter = set.find(MoveOnly(13));
-  EXPECT_TRUE(iter == set.end());
-
-  set.clear();
-}
-
-TEST(HashSetTest, UniquePtr) {
-  using Pointer = std::unique_ptr<int>;
-  using Set = HashSet<Pointer>;
-  Set set;
-  int* onePointer = new int(1);
-  {
-    Set::AddResult addResult = set.insert(Pointer(onePointer));
-    EXPECT_TRUE(addResult.isNewEntry);
-    EXPECT_EQ(onePointer, addResult.storedValue->get());
-    EXPECT_EQ(1, **addResult.storedValue);
-  }
-  auto iter = set.find(onePointer);
-  ASSERT_TRUE(iter != set.end());
-  EXPECT_EQ(onePointer, iter->get());
-
-  Pointer nonexistent(new int(42));
-  iter = set.find(nonexistent.get());
-  EXPECT_TRUE(iter == set.end());
-
-  // Insert more to cause a rehash.
-  for (int i = 2; i < 32; ++i) {
-    Set::AddResult addResult = set.insert(Pointer(new int(i)));
-    EXPECT_TRUE(addResult.isNewEntry);
-    EXPECT_EQ(i, **addResult.storedValue);
-  }
-
-  iter = set.find(onePointer);
-  ASSERT_TRUE(iter != set.end());
-  EXPECT_EQ(onePointer, iter->get());
-
-  Pointer one(set.take(onePointer));
-  ASSERT_TRUE(one);
-  EXPECT_EQ(onePointer, one.get());
-
-  Pointer empty(set.take(nonexistent.get()));
-  EXPECT_TRUE(!empty);
-
-  iter = set.find(onePointer);
-  EXPECT_TRUE(iter == set.end());
-
-  // Re-insert to the deleted slot.
-  {
-    Set::AddResult addResult = set.insert(std::move(one));
-    EXPECT_TRUE(addResult.isNewEntry);
-    EXPECT_EQ(onePointer, addResult.storedValue->get());
-    EXPECT_EQ(1, **addResult.storedValue);
-  }
-}
-
-bool isOneTwoThree(const HashSet<int>& set) {
-  return set.size() == 3 && set.contains(1) && set.contains(2) &&
-         set.contains(3);
-}
-
-HashSet<int> returnOneTwoThree() {
-  return {1, 2, 3};
-}
-
-TEST(HashSetTest, InitializerList) {
-  HashSet<int> empty({});
-  EXPECT_TRUE(empty.isEmpty());
-
-  HashSet<int> one({1});
-  EXPECT_EQ(1u, one.size());
-  EXPECT_TRUE(one.contains(1));
-
-  HashSet<int> oneTwoThree({1, 2, 3});
-  EXPECT_EQ(3u, oneTwoThree.size());
-  EXPECT_TRUE(oneTwoThree.contains(1));
-  EXPECT_TRUE(oneTwoThree.contains(2));
-  EXPECT_TRUE(oneTwoThree.contains(3));
-
-  // Put some jank so we can check if the assignments later can clear them.
-  empty.insert(9999);
-  one.insert(9999);
-  oneTwoThree.insert(9999);
-
-  empty = {};
-  EXPECT_TRUE(empty.isEmpty());
-
-  one = {1};
-  EXPECT_EQ(1u, one.size());
-  EXPECT_TRUE(one.contains(1));
-
-  oneTwoThree = {1, 2, 3};
-  EXPECT_EQ(3u, oneTwoThree.size());
-  EXPECT_TRUE(oneTwoThree.contains(1));
-  EXPECT_TRUE(oneTwoThree.contains(2));
-  EXPECT_TRUE(oneTwoThree.contains(3));
-
-  oneTwoThree = {3, 1, 1, 2, 1, 1, 3};
-  EXPECT_EQ(3u, oneTwoThree.size());
-  EXPECT_TRUE(oneTwoThree.contains(1));
-  EXPECT_TRUE(oneTwoThree.contains(2));
-  EXPECT_TRUE(oneTwoThree.contains(3));
-
-  // Other ways of construction: as a function parameter and in a return
-  // statement.
-  EXPECT_TRUE(isOneTwoThree({1, 2, 3}));
-  EXPECT_TRUE(isOneTwoThree(returnOneTwoThree()));
-}
-
-}  // anonymous namespace
-
-}  // namespace WTF