1 files changed, 435 insertions, 0 deletions
diff --git a/xpcom/tests/gtest/TestHashtables.cpp b/xpcom/tests/gtest/TestHashtables.cpp
new file mode 100644
index 000000000..394812631
--- /dev/null
+++ b/xpcom/tests/gtest/TestHashtables.cpp
@@ -0,0 +1,435 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsTHashtable.h"
+#include "nsBaseHashtable.h"
+#include "nsDataHashtable.h"
+#include "nsInterfaceHashtable.h"
+#include "nsClassHashtable.h"
+
+#include "nsCOMPtr.h"
+#include "nsISupports.h"
+#include "nsCOMArray.h"
+#include "mozilla/Attributes.h"
+
+#include "gtest/gtest.h"
+
+namespace TestHashtables {
+
+class TestUniChar // for nsClassHashtable
+{
+public:
+  explicit TestUniChar(uint32_t aWord)
+  {
+    mWord = aWord;
+  }
+
+  ~TestUniChar()
+  {
+  }
+
+  uint32_t GetChar() const { return mWord; }
+
+private:
+  uint32_t mWord;
+};
+
+struct EntityNode {
+  const char*   mStr; // never owns buffer
+  uint32_t       mUnicode;
+};
+
+EntityNode gEntities[] = {
+  {"nbsp",160},
+  {"iexcl",161},
+  {"cent",162},
+  {"pound",163},
+  {"curren",164},
+  {"yen",165},
+  {"brvbar",166},
+  {"sect",167},
+  {"uml",168},
+  {"copy",169},
+  {"ordf",170},
+  {"laquo",171},
+  {"not",172},
+  {"shy",173},
+  {"reg",174},
+  {"macr",175}
+};
+
+#define ENTITY_COUNT (unsigned(sizeof(gEntities)/sizeof(EntityNode)))
+
+class EntityToUnicodeEntry : public PLDHashEntryHdr
+{
+public:
+  typedef const char* KeyType;
+  typedef const char* KeyTypePointer;
+
+  explicit EntityToUnicodeEntry(const char* aKey) { mNode = nullptr; }
+  EntityToUnicodeEntry(const EntityToUnicodeEntry& aEntry) { mNode = aEntry.mNode; }
+  ~EntityToUnicodeEntry() { }
+
+  bool KeyEquals(const char* aEntity) const { return !strcmp(mNode->mStr, aEntity); }
+  static const char* KeyToPointer(const char* aEntity) { return aEntity; }
+  static PLDHashNumber HashKey(const char* aEntity) { return mozilla::HashString(aEntity); }
+  enum { ALLOW_MEMMOVE = true };
+
+  const EntityNode* mNode;
+};
+
+static uint32_t
+nsTIterPrint(nsTHashtable<EntityToUnicodeEntry>& hash)
+{
+  uint32_t n = 0;
+  for (auto iter = hash.Iter(); !iter.Done(); iter.Next()) {
+    n++;
+  }
+  return n;
+}
+
+static uint32_t
+nsTIterPrintRemove(nsTHashtable<EntityToUnicodeEntry>& hash)
+{
+  uint32_t n = 0;
+  for (auto iter = hash.Iter(); !iter.Done(); iter.Next()) {
+    iter.Remove();
+    n++;
+  }
+  return n;
+}
+
+void
+testTHashtable(nsTHashtable<EntityToUnicodeEntry>& hash, uint32_t numEntries) {
+  uint32_t i;
+  for (i = 0; i < numEntries; ++i) {
+    EntityToUnicodeEntry* entry =
+      hash.PutEntry(gEntities[i].mStr);
+
+    EXPECT_TRUE(entry);
+
+    EXPECT_FALSE(entry->mNode);
+    entry->mNode = &gEntities[i];
+  }
+
+  for (i = 0; i < numEntries; ++i) {
+    EntityToUnicodeEntry* entry =
+      hash.GetEntry(gEntities[i].mStr);
+
+    EXPECT_TRUE(entry);
+  }
+
+  EntityToUnicodeEntry* entry =
+    hash.GetEntry("xxxy");
+
+  EXPECT_FALSE(entry);
+
+  uint32_t count = nsTIterPrint(hash);
+  EXPECT_EQ(count, numEntries);
+}
+
+//
+// all this nsIFoo stuff was copied wholesale from TestCOMPtr.cpp
+//
+
+#define NS_IFOO_IID \
+{ 0x6f7652e0,  0xee43, 0x11d1, \
+ { 0x9c, 0xc3, 0x00, 0x60, 0x08, 0x8c, 0xa6, 0xb3 } }
+
+class IFoo final : public nsISupports
+  {
+    public:
+      NS_DECLARE_STATIC_IID_ACCESSOR(NS_IFOO_IID)
+
+      IFoo();
+
+      NS_IMETHOD_(MozExternalRefCountType) AddRef();
+      NS_IMETHOD_(MozExternalRefCountType) Release();
+      NS_IMETHOD QueryInterface( const nsIID&, void** );
+
+      NS_IMETHOD SetString(const nsACString& /*in*/ aString);
+      NS_IMETHOD GetString(nsACString& /*out*/ aString);
+
+      static void print_totals();
+
+    private:
+      ~IFoo();
+
+      unsigned int refcount_;
+
+      static unsigned int total_constructions_;
+      static unsigned int total_destructions_;
+      nsCString mString;
+  };
+
+NS_DEFINE_STATIC_IID_ACCESSOR(IFoo, NS_IFOO_IID)
+
+unsigned int IFoo::total_constructions_;
+unsigned int IFoo::total_destructions_;
+
+void
+IFoo::print_totals()
+  {
+  }
+
+IFoo::IFoo()
+    : refcount_(0)
+  {
+    ++total_constructions_;
+  }
+
+IFoo::~IFoo()
+  {
+    ++total_destructions_;
+  }
+
+MozExternalRefCountType
+IFoo::AddRef()
+  {
+    ++refcount_;
+    return refcount_;
+  }
+
+MozExternalRefCountType
+IFoo::Release()
+  {
+    int newcount = --refcount_;
+    if ( newcount == 0 )
+      {
+        delete this;
+      }
+
+    return newcount;
+  }
+
+nsresult
+IFoo::QueryInterface( const nsIID& aIID, void** aResult )
+  {
+    nsISupports* rawPtr = 0;
+    nsresult status = NS_OK;
+
+    if ( aIID.Equals(NS_GET_IID(IFoo)) )
+      rawPtr = this;
+    else
+      {
+        nsID iid_of_ISupports = NS_ISUPPORTS_IID;
+        if ( aIID.Equals(iid_of_ISupports) )
+          rawPtr = static_cast<nsISupports*>(this);
+        else
+          status = NS_ERROR_NO_INTERFACE;
+      }
+
+    NS_IF_ADDREF(rawPtr);
+    *aResult = rawPtr;
+
+    return status;
+  }
+
+nsresult
+IFoo::SetString(const nsACString& aString)
+{
+  mString = aString;
+  return NS_OK;
+}
+
+nsresult
+IFoo::GetString(nsACString& aString)
+{
+  aString = mString;
+  return NS_OK;
+}
+
+nsresult
+CreateIFoo( IFoo** result )
+    // a typical factory function (that calls AddRef)
+  {
+    IFoo* foop = new IFoo();
+
+    foop->AddRef();
+    *result = foop;
+
+    return NS_OK;
+  }
+
+} // namespace TestHashtables
+
+using namespace TestHashtables;
+
+TEST(Hashtable, THashtable)
+{
+  // check an nsTHashtable
+  nsTHashtable<EntityToUnicodeEntry> EntityToUnicode(ENTITY_COUNT);
+
+  testTHashtable(EntityToUnicode, 5);
+
+  uint32_t count = nsTIterPrintRemove(EntityToUnicode);
+  ASSERT_EQ(count, uint32_t(5));
+
+  count = nsTIterPrint(EntityToUnicode);
+  ASSERT_EQ(count, uint32_t(0));
+
+  testTHashtable(EntityToUnicode, ENTITY_COUNT);
+
+  EntityToUnicode.Clear();
+
+  count = nsTIterPrint(EntityToUnicode);
+  ASSERT_EQ(count, uint32_t(0));
+}
+
+TEST(Hashtables, DataHashtable)
+{
+  // check a data-hashtable
+  nsDataHashtable<nsUint32HashKey,const char*> UniToEntity(ENTITY_COUNT);
+
+  for (uint32_t i = 0; i < ENTITY_COUNT; ++i) {
+    UniToEntity.Put(gEntities[i].mUnicode, gEntities[i].mStr);
+  }
+
+  const char* str;
+
+  for (uint32_t i = 0; i < ENTITY_COUNT; ++i) {
+    ASSERT_TRUE(UniToEntity.Get(gEntities[i].mUnicode, &str));
+  }
+
+  ASSERT_FALSE(UniToEntity.Get(99446, &str));
+
+  uint32_t count = 0;
+  for (auto iter = UniToEntity.Iter(); !iter.Done(); iter.Next()) {
+    count++;
+  }
+  ASSERT_EQ(count, ENTITY_COUNT);
+
+  UniToEntity.Clear();
+
+  count = 0;
+  for (auto iter = UniToEntity.Iter(); !iter.Done(); iter.Next()) {
+    printf("  enumerated %u = \"%s\"\n", iter.Key(), iter.Data());
+    count++;
+  }
+  ASSERT_EQ(count, uint32_t(0));
+}
+
+TEST(Hashtables, ClassHashtable)
+{
+  // check a class-hashtable
+  nsClassHashtable<nsCStringHashKey,TestUniChar> EntToUniClass(ENTITY_COUNT);
+
+  for (uint32_t i = 0; i < ENTITY_COUNT; ++i) {
+    TestUniChar* temp = new TestUniChar(gEntities[i].mUnicode);
+    EntToUniClass.Put(nsDependentCString(gEntities[i].mStr), temp);
+  }
+
+  TestUniChar* myChar;
+
+  for (uint32_t i = 0; i < ENTITY_COUNT; ++i) {
+    ASSERT_TRUE(EntToUniClass.Get(nsDependentCString(gEntities[i].mStr), &myChar));
+  }
+
+  ASSERT_FALSE(EntToUniClass.Get(NS_LITERAL_CSTRING("xxxx"), &myChar));
+
+  uint32_t count = 0;
+  for (auto iter = EntToUniClass.Iter(); !iter.Done(); iter.Next()) {
+    count++;
+  }
+  ASSERT_EQ(count, ENTITY_COUNT);
+
+  EntToUniClass.Clear();
+
+  count = 0;
+  for (auto iter = EntToUniClass.Iter(); !iter.Done(); iter.Next()) {
+    count++;
+  }
+  ASSERT_EQ(count, uint32_t(0));
+}
+
+TEST(Hashtables, DataHashtableWithInterfaceKey)
+{
+  // check a data-hashtable with an interface key
+  nsDataHashtable<nsISupportsHashKey,uint32_t> EntToUniClass2(ENTITY_COUNT);
+
+  nsCOMArray<IFoo> fooArray;
+
+  for (uint32_t i = 0; i < ENTITY_COUNT; ++i) {
+    nsCOMPtr<IFoo> foo;
+    CreateIFoo(getter_AddRefs(foo));
+    foo->SetString(nsDependentCString(gEntities[i].mStr));
+
+    fooArray.InsertObjectAt(foo, i);
+
+    EntToUniClass2.Put(foo, gEntities[i].mUnicode);
+  }
+
+  uint32_t myChar2;
+
+  for (uint32_t i = 0; i < ENTITY_COUNT; ++i) {
+    ASSERT_TRUE(EntToUniClass2.Get(fooArray[i], &myChar2));
+  }
+
+  ASSERT_FALSE(EntToUniClass2.Get((nsISupports*) 0x55443316, &myChar2));
+
+  uint32_t count = 0;
+  for (auto iter = EntToUniClass2.Iter(); !iter.Done(); iter.Next()) {
+    nsAutoCString s;
+    nsCOMPtr<IFoo> foo = do_QueryInterface(iter.Key());
+    foo->GetString(s);
+    count++;
+  }
+  ASSERT_EQ(count, ENTITY_COUNT);
+
+  EntToUniClass2.Clear();
+
+  count = 0;
+  for (auto iter = EntToUniClass2.Iter(); !iter.Done(); iter.Next()) {
+    nsAutoCString s;
+    nsCOMPtr<IFoo> foo = do_QueryInterface(iter.Key());
+    foo->GetString(s);
+    count++;
+  }
+  ASSERT_EQ(count, uint32_t(0));
+}
+
+TEST(Hashtables, InterfaceHashtable)
+{
+  // check an interface-hashtable with an uint32_t key
+  nsInterfaceHashtable<nsUint32HashKey,IFoo> UniToEntClass2(ENTITY_COUNT);
+
+  for (uint32_t i = 0; i < ENTITY_COUNT; ++i) {
+    nsCOMPtr<IFoo> foo;
+    CreateIFoo(getter_AddRefs(foo));
+    foo->SetString(nsDependentCString(gEntities[i].mStr));
+
+    UniToEntClass2.Put(gEntities[i].mUnicode, foo);
+  }
+
+  for (uint32_t i = 0; i < ENTITY_COUNT; ++i) {
+    nsCOMPtr<IFoo> myEnt;
+    ASSERT_TRUE(UniToEntClass2.Get(gEntities[i].mUnicode, getter_AddRefs(myEnt)));
+
+    nsAutoCString myEntStr;
+    myEnt->GetString(myEntStr);
+  }
+
+  nsCOMPtr<IFoo> myEnt;
+  ASSERT_FALSE(UniToEntClass2.Get(9462, getter_AddRefs(myEnt)));
+
+  uint32_t count = 0;
+  for (auto iter = UniToEntClass2.Iter(); !iter.Done(); iter.Next()) {
+    nsAutoCString s;
+    iter.UserData()->GetString(s);
+    count++;
+  }
+  ASSERT_EQ(count, ENTITY_COUNT);
+
+  UniToEntClass2.Clear();
+
+  count = 0;
+  for (auto iter = UniToEntClass2.Iter(); !iter.Done(); iter.Next()) {
+    nsAutoCString s;
+    iter.Data()->GetString(s);
+    count++;
+  }
+  ASSERT_EQ(count, uint32_t(0));
+}