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