blob: 9273afe5c82b23d59a62b676d5fcf30b9ee35f9f [file] [log] [blame]
// Copyright 2020 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "fxjs/gc/container_trace.h"
#include <stdint.h>
#include <list>
#include <map>
#include <set>
#include <vector>
#include "testing/gtest/include/gtest/gtest.h"
#include "v8/include/cppgc/member.h"
namespace {
class Thing : public cppgc::GarbageCollected<Thing> {
public:
void Trace(cppgc::Visitor* visitor) const {}
};
class CountingVisitor {
public:
CountingVisitor() = default;
void Trace(const void* that) { ++call_count_; }
int call_count() const { return call_count_; }
private:
int call_count_ = 0;
};
} // namespace
TEST(ContainerTrace, ActualListTrace) {
std::list<cppgc::Member<Thing>> thing;
thing.emplace_back(nullptr);
CountingVisitor cv;
ContainerTrace(&cv, thing);
EXPECT_EQ(1, cv.call_count());
}
TEST(ContainerTrace, ActualMapTraceFirst) {
std::map<cppgc::Member<Thing>, int> thing;
thing[nullptr] = 42;
CountingVisitor cv;
ContainerTrace(&cv, thing);
EXPECT_EQ(1, cv.call_count());
}
TEST(ContainerTrace, ActualMapTraceSecond) {
std::map<int, cppgc::Member<Thing>> thing;
thing[42] = nullptr;
CountingVisitor cv;
ContainerTrace(&cv, thing);
EXPECT_EQ(1, cv.call_count());
}
TEST(ContainerTrace, ActualMapTraceBoth) {
std::map<cppgc::Member<Thing>, cppgc::Member<Thing>> thing;
thing[nullptr] = nullptr;
CountingVisitor cv;
ContainerTrace(&cv, thing);
EXPECT_EQ(2, cv.call_count());
}
TEST(ContainerTrace, ActualSetTrace) {
std::set<cppgc::Member<Thing>> thing;
thing.insert(nullptr);
CountingVisitor cv;
ContainerTrace(&cv, thing);
EXPECT_EQ(1, cv.call_count());
}
TEST(ContainerTrace, ActualVectorTrace) {
std::vector<cppgc::Member<Thing>> thing;
thing.emplace_back(nullptr);
CountingVisitor cv;
ContainerTrace(&cv, thing);
EXPECT_EQ(1, cv.call_count());
}