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// Copyright 2017 PDFium 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 "core/fpdfapi/parser/cpdf_indirect_object_holder.h"
#include <memory>
#include <utility>
#include "core/fpdfapi/parser/cpdf_null.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/base/ptr_util.h"
namespace {
class MockIndirectObjectHolder : public CPDF_IndirectObjectHolder {
public:
MockIndirectObjectHolder() {}
~MockIndirectObjectHolder() override {}
MOCK_METHOD1(ParseIndirectObject,
std::unique_ptr<CPDF_Object>(uint32_t objnum));
};
} // namespace
TEST(CPDF_IndirectObjectHolderTest, RecursiveParseOfSameObject) {
MockIndirectObjectHolder mock_holder;
// ParseIndirectObject should not be called again on recursively same object
// parse request.
EXPECT_CALL(mock_holder, ParseIndirectObject(::testing::_))
.WillOnce(::testing::WithArg<0>(::testing::Invoke(
[&mock_holder](uint32_t objnum) -> std::unique_ptr<CPDF_Object> {
const CPDF_Object* same_parse =
mock_holder.GetOrParseIndirectObject(objnum);
CHECK(!same_parse);
return pdfium::MakeUnique<CPDF_Null>();
})));
EXPECT_TRUE(mock_holder.GetOrParseIndirectObject(1000));
}
TEST(CPDF_IndirectObjectHolderTest, GetObjectMethods) {
static constexpr uint32_t kObjNum = 1000;
MockIndirectObjectHolder mock_holder;
EXPECT_CALL(mock_holder, ParseIndirectObject(::testing::_)).Times(0);
EXPECT_FALSE(mock_holder.GetIndirectObject(kObjNum));
::testing::Mock::VerifyAndClearExpectations(&mock_holder);
EXPECT_CALL(mock_holder, ParseIndirectObject(::testing::_))
.WillOnce(::testing::WithArg<0>(::testing::Invoke(
[](uint32_t objnum) -> std::unique_ptr<CPDF_Object> {
return pdfium::MakeUnique<CPDF_Null>();
})));
EXPECT_TRUE(mock_holder.GetOrParseIndirectObject(kObjNum));
::testing::Mock::VerifyAndClearExpectations(&mock_holder);
EXPECT_CALL(mock_holder, ParseIndirectObject(::testing::_)).Times(0);
ASSERT_TRUE(mock_holder.GetIndirectObject(kObjNum));
::testing::Mock::VerifyAndClearExpectations(&mock_holder);
EXPECT_EQ(kObjNum, mock_holder.GetIndirectObject(kObjNum)->GetObjNum());
}
TEST(CPDF_IndirectObjectHolderTest, ParseInvalidObjNum) {
MockIndirectObjectHolder mock_holder;
EXPECT_CALL(mock_holder, ParseIndirectObject(::testing::_)).Times(0);
EXPECT_FALSE(
mock_holder.GetOrParseIndirectObject(CPDF_Object::kInvalidObjNum));
}
TEST(CPDF_IndirectObjectHolderTest, ReplaceObjectWithInvalidObjNum) {
MockIndirectObjectHolder mock_holder;
EXPECT_CALL(mock_holder, ParseIndirectObject(::testing::_)).Times(0);
EXPECT_FALSE(mock_holder.ReplaceIndirectObjectIfHigherGeneration(
CPDF_Object::kInvalidObjNum, pdfium::MakeUnique<CPDF_Null>()));
}
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