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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/platform/bindings/script_wrappable_visitor.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/core/testing/death_aware_script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/trace_traits.h"
namespace blink {
namespace {
class VerifyingScriptWrappableVisitor : public ScriptWrappableVisitor {
public:
// Visitor interface.
void Visit(const TraceWrapperV8Reference<v8::Value>&) override {}
void Visit(DOMWrapperMap<ScriptWrappable>*,
const ScriptWrappable* key) override {}
void VisitWithWrappers(void*, TraceDescriptor desc) override {
visited_objects_.push_back(desc.base_object_payload);
}
void VisitBackingStoreStrongly(void* object,
void** object_slot,
TraceDescriptor desc) override {
desc.callback(this, desc.base_object_payload);
}
bool DidVisitObject(const ScriptWrappable* script_wrappable) const {
return std::find(visited_objects_.begin(), visited_objects_.end(),
script_wrappable) != visited_objects_.end();
}
protected:
using Visitor::Visit;
private:
std::vector<void*> visited_objects_;
};
class ExpectObjectsVisited {
public:
ExpectObjectsVisited(VerifyingScriptWrappableVisitor* visitor,
std::initializer_list<ScriptWrappable*> objects)
: visitor_(visitor), expected_objects_(objects) {}
~ExpectObjectsVisited() {
for (const ScriptWrappable* expected_object : expected_objects_) {
EXPECT_TRUE(visitor_->DidVisitObject(expected_object));
}
}
private:
VerifyingScriptWrappableVisitor* visitor_;
std::vector<ScriptWrappable*> expected_objects_;
};
} // namespace
TEST(ScriptWrappableVisitorTest, TraceWrapperMember) {
VerifyingScriptWrappableVisitor verifying_visitor;
DeathAwareScriptWrappable* parent = DeathAwareScriptWrappable::Create();
DeathAwareScriptWrappable* child = DeathAwareScriptWrappable::Create();
parent->SetWrappedDependency(child);
{
ExpectObjectsVisited expected(&verifying_visitor, {child});
TraceDescriptor desc =
TraceTrait<DeathAwareScriptWrappable>::GetTraceDescriptor(parent);
desc.callback(&verifying_visitor, parent);
}
}
TEST(ScriptWrappableVisitorTest, HeapVectorOfTraceWrapperMember) {
VerifyingScriptWrappableVisitor verifying_visitor;
DeathAwareScriptWrappable* parent = DeathAwareScriptWrappable::Create();
DeathAwareScriptWrappable* child = DeathAwareScriptWrappable::Create();
parent->AddWrappedVectorDependency(child);
{
ExpectObjectsVisited expected(&verifying_visitor, {child});
TraceDescriptor desc =
TraceTrait<DeathAwareScriptWrappable>::GetTraceDescriptor(parent);
desc.callback(&verifying_visitor, parent);
}
}
TEST(ScriptWrappableVisitorTest, HeapHashMapOfTraceWrapperMember) {
VerifyingScriptWrappableVisitor verifying_visitor;
DeathAwareScriptWrappable* parent = DeathAwareScriptWrappable::Create();
DeathAwareScriptWrappable* key = DeathAwareScriptWrappable::Create();
DeathAwareScriptWrappable* value = DeathAwareScriptWrappable::Create();
parent->AddWrappedHashMapDependency(key, value);
{
ExpectObjectsVisited expected(&verifying_visitor, {key, value});
TraceDescriptor desc =
TraceTrait<DeathAwareScriptWrappable>::GetTraceDescriptor(parent);
desc.callback(&verifying_visitor, parent);
}
}
TEST(ScriptWrappableVisitorTest, InObjectUsingTraceWrapperMember) {
VerifyingScriptWrappableVisitor verifying_visitor;
DeathAwareScriptWrappable* parent = DeathAwareScriptWrappable::Create();
DeathAwareScriptWrappable* child = DeathAwareScriptWrappable::Create();
parent->AddInObjectDependency(child);
{
ExpectObjectsVisited expected(&verifying_visitor, {child});
TraceDescriptor desc =
TraceTrait<DeathAwareScriptWrappable>::GetTraceDescriptor(parent);
desc.callback(&verifying_visitor, parent);
}
}
} // namespace blink
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