/* -*- 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 "mozilla/ArrayUtils.h"

#include "nsAtom.h"

#include "nsString.h"

#include "UTFStrings.h"

#include "nsIServiceManager.h"

#include "nsThreadUtils.h"

#include "gtest/gtest.h"

using namespace mozilla;

int32_t NS_GetUnusedAtomCount(void);

namespace TestAtoms {

TEST(Atoms, Basic)

{

  for (unsigned int i = 0; i < ArrayLength(ValidStrings); ++i) {

    nsDependentString str16(ValidStrings[i].m16);

    nsDependentCString str8(ValidStrings[i].m8);

    RefPtr<nsAtom> atom = NS_Atomize(str16);

    EXPECT_TRUE(atom->Equals(str16));

    nsString tmp16;

    nsCString tmp8;

    atom->ToString(tmp16);

    atom->ToUTF8String(tmp8);

    EXPECT_TRUE(str16.Equals(tmp16));

    EXPECT_TRUE(str8.Equals(tmp8));

    EXPECT_TRUE(nsDependentString(atom->GetUTF16String()).Equals(str16));

    EXPECT_TRUE(nsAtomString(atom).Equals(str16));

    EXPECT_TRUE(nsDependentAtomString(atom).Equals(str16));

    EXPECT_TRUE(nsAtomCString(atom).Equals(str8));

  }

}

TEST(Atoms, 16vs8)

{

  for (unsigned int i = 0; i < ArrayLength(ValidStrings); ++i) {

    RefPtr<nsAtom> atom16 = NS_Atomize(ValidStrings[i].m16);

    RefPtr<nsAtom> atom8 = NS_Atomize(ValidStrings[i].m8);

    EXPECT_EQ(atom16, atom8);

  }

}

TEST(Atoms, Null)

{

  nsAutoString str(NS_LITERAL_STRING("string with a \0 char"));

  nsDependentString strCut(str.get());

  EXPECT_FALSE(str.Equals(strCut));

  RefPtr<nsAtom> atomCut = NS_Atomize(strCut);

  RefPtr<nsAtom> atom = NS_Atomize(str);

  EXPECT_EQ(atom->GetLength(), str.Length());

  EXPECT_TRUE(atom->Equals(str));

  EXPECT_NE(atom, atomCut);

  EXPECT_TRUE(atomCut->Equals(strCut));

}

TEST(Atoms, Invalid)

{

  for (unsigned int i = 0; i < ArrayLength(Invalid16Strings); ++i) {

    nsrefcnt count = NS_GetNumberOfAtoms();

    {

      RefPtr<nsAtom> atom16 = NS_Atomize(Invalid16Strings[i].m16);

      EXPECT_TRUE(atom16->Equals(nsDependentString(Invalid16Strings[i].m16)));

    }

    EXPECT_EQ(count, NS_GetNumberOfAtoms());

  }

#ifndef DEBUG

// Don't run this test in debug builds as that intentionally asserts.

  for (unsigned int i = 0; i < ArrayLength(Invalid8Strings); ++i) {

    nsrefcnt count = NS_GetNumberOfAtoms();

    {

      RefPtr<nsAtom> atom8 = NS_Atomize(Invalid8Strings[i].m8);

      RefPtr<nsAtom> atom16 = NS_Atomize(Invalid8Strings[i].m16);

      EXPECT_EQ(atom16, atom8);

      EXPECT_TRUE(atom16->Equals(nsDependentString(Invalid8Strings[i].m16)));

    }

    EXPECT_EQ(count, NS_GetNumberOfAtoms());

  }

  for (unsigned int i = 0; i < ArrayLength(Malformed8Strings); ++i) {

    nsrefcnt count = NS_GetNumberOfAtoms();

    {

      RefPtr<nsAtom> atom8 = NS_Atomize(Malformed8Strings[i].m8);

      RefPtr<nsAtom> atom16 = NS_Atomize(Malformed8Strings[i].m16);

      EXPECT_EQ(atom8, atom16);

    }

    EXPECT_EQ(count, NS_GetNumberOfAtoms());

  }

#endif

}

#define FIRST_ATOM_STR "first static atom. Hello!"

#define SECOND_ATOM_STR "second static atom. @World!"

#define THIRD_ATOM_STR "third static atom?!"

bool

isStaticAtom(nsAtom* atom)

{

  // Don't use logic && in order to ensure that all addrefs/releases are always

  // run, even if one of the tests fail. This allows us to run this code on a

  // non-static atom without affecting its refcount.

  bool rv = (atom->AddRef() == 2);

  rv &= (atom->AddRef() == 2);

  rv &= (atom->AddRef() == 2);

  rv &= (atom->Release() == 1);

  rv &= (atom->Release() == 1);

  rv &= (atom->Release() == 1);

  return rv;

}

TEST(Atoms, Table)

{

  nsrefcnt count = NS_GetNumberOfAtoms();

  RefPtr<nsAtom> thirdDynamic = NS_Atomize(THIRD_ATOM_STR);

  EXPECT_FALSE(isStaticAtom(thirdDynamic));

  EXPECT_TRUE(thirdDynamic);

  EXPECT_EQ(NS_GetNumberOfAtoms(), count + 1);

}

class nsAtomRunner final : public nsIRunnable

{

public:

  NS_DECL_THREADSAFE_ISUPPORTS

  NS_IMETHOD Run() final

  {

    for (int i = 0; i < 10000; i++) {

      RefPtr<nsAtom> atom = NS_Atomize(u"A Testing Atom");

    }

    return NS_OK;

  }

private:

  ~nsAtomRunner() {}

};

NS_IMPL_ISUPPORTS(nsAtomRunner, nsIRunnable)

TEST(Atoms, ConcurrentAccessing)

{

  static const size_t kThreadCount = 4;

  // Force a GC before so that we don't have any unused atom.

  NS_GetNumberOfAtoms();

  EXPECT_EQ(NS_GetUnusedAtomCount(), int32_t(0));

  nsCOMPtr<nsIThread> threads[kThreadCount];

  for (size_t i = 0; i < kThreadCount; i++) {

    nsresult rv = NS_NewThread(getter_AddRefs(threads[i]), new nsAtomRunner);

    EXPECT_TRUE(NS_SUCCEEDED(rv));

  }

  for (size_t i = 0; i < kThreadCount; i++) {

    threads[i]->Shutdown();

  }

  // We should have one unused atom from this test.

  EXPECT_EQ(NS_GetUnusedAtomCount(), int32_t(1));

}

}