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// Copyright 2016 The Chromium Authors
// 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/json/json_values.h"
#include "base/memory/raw_ref.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/platform/wtf/text/string_builder.h"
namespace blink {
namespace {
class JSONValueDeletionVerifier : public JSONValue {
public:
explicit JSONValueDeletionVerifier(int& counter) : counter_(counter) {}
~JSONValueDeletionVerifier() override { ++(*counter_); }
private:
const raw_ref<int> counter_;
};
} // namespace
TEST(JSONValuesTest, ArrayCastDoesNotLeak) {
int deletion_count = 0;
std::unique_ptr<JSONValueDeletionVerifier> not_an_array(
new JSONValueDeletionVerifier(deletion_count));
EXPECT_EQ(nullptr, JSONArray::From(std::move(not_an_array)));
EXPECT_EQ(1, deletion_count);
}
TEST(JSONValuesTest, ObjectCastDoesNotLeak) {
int deletion_count = 0;
std::unique_ptr<JSONValueDeletionVerifier> not_an_object(
new JSONValueDeletionVerifier(deletion_count));
EXPECT_EQ(nullptr, JSONArray::From(std::move(not_an_object)));
EXPECT_EQ(1, deletion_count);
}
TEST(JSONValuesTest, ArrayIterator) {
JSONArray array;
array.PushString("P");
array.PushString("A");
array.PushString("S");
array.PushString("S");
StringBuilder result;
for (const JSONValue& entry : array) {
String str;
ASSERT_TRUE(entry.AsString(&str));
result.Append(str);
}
EXPECT_EQ(result.ToString(), "PASS");
}
TEST(JSONValuesTest, EmptyArrayIterator) {
JSONArray array;
bool did_iterate = false;
for (const JSONValue& _ : array) {
did_iterate = true;
}
EXPECT_FALSE(did_iterate);
}
} // namespace blink
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