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/* -*- 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
#include "mozilla/ArrayUtils.h"
#include "nsAtom.h"
#include "nsString.h"
#include "UTFStrings.h"
#include "nsIThread.h"
#include "nsThreadUtils.h"
#include "gtest/gtest.h"
#include "mozilla/gtest/MozAssertions.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(u"string with a \0 char"_ns);
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?!"
static 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);
}
static void AccessAtoms(void*) {
for (int i = 0; i < 10000; i++) {
RefPtr<nsAtom> atom = NS_Atomize(u"A Testing Atom");
}
}
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));
// Spawn PRThreads to do the concurrent atom access, to make sure we don't
// spin the main thread event loop. Spinning the event loop may run a task
// that uses an atom, leading to a false positive test failure.
PRThread* threads[kThreadCount];
for (size_t i = 0; i < kThreadCount; i++) {
threads[i] = PR_CreateThread(PR_USER_THREAD, AccessAtoms, nullptr,
PR_PRIORITY_NORMAL, PR_GLOBAL_THREAD,
PR_JOINABLE_THREAD, 0);
EXPECT_TRUE(threads[i]);
}
for (size_t i = 0; i < kThreadCount; i++) {
EXPECT_EQ(PR_SUCCESS, PR_JoinThread(threads[i]));
}
// We should have one unused atom from this test.
EXPECT_EQ(NS_GetUnusedAtomCount(), int32_t(1));
}
} // namespace TestAtoms