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// Copyright 2022 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/fxcrt/fixed_zeroed_data_vector.h"
#include <utility>
#include "core/fxcrt/fixed_try_alloc_zeroed_data_vector.h"
#include "core/fxcrt/fixed_uninit_data_vector.h"
#include "core/fxcrt/span_util.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/base/span.h"
TEST(FixedZeroedDataVector, NoData) {
FixedZeroedDataVector<int> vec;
EXPECT_EQ(0u, vec.size());
EXPECT_TRUE(vec.empty());
EXPECT_TRUE(vec.span().empty());
EXPECT_TRUE(vec.writable_span().empty());
}
TEST(FixedZeroedDataVector, WithData) {
FixedZeroedDataVector<int> vec(4);
EXPECT_FALSE(vec.empty());
EXPECT_EQ(4u, vec.size());
EXPECT_EQ(4u, vec.span().size());
EXPECT_EQ(4u, vec.writable_span().size());
EXPECT_THAT(vec.span(), testing::ElementsAre(0, 0, 0, 0));
constexpr int kData[] = {1, 2, 3, 4};
fxcrt::spancpy(vec.writable_span(), pdfium::make_span(kData));
EXPECT_THAT(vec.span(), testing::ElementsAre(1, 2, 3, 4));
}
TEST(FixedZeroedDataVector, Move) {
FixedZeroedDataVector<int> vec(4);
constexpr int kData[] = {1, 2, 3, 4};
ASSERT_EQ(4u, vec.writable_span().size());
fxcrt::spancpy(vec.writable_span(), pdfium::make_span(kData));
const int* const original_data_ptr = vec.span().data();
FixedZeroedDataVector<int> vec2(std::move(vec));
EXPECT_FALSE(vec2.empty());
EXPECT_EQ(4u, vec2.size());
EXPECT_EQ(4u, vec2.span().size());
EXPECT_EQ(4u, vec2.writable_span().size());
EXPECT_THAT(vec2.span(), testing::ElementsAre(1, 2, 3, 4));
EXPECT_EQ(vec2.span().data(), original_data_ptr);
EXPECT_EQ(0u, vec.size());
EXPECT_TRUE(vec.empty());
EXPECT_TRUE(vec.span().empty());
EXPECT_TRUE(vec.writable_span().empty());
vec = std::move(vec2);
EXPECT_FALSE(vec.empty());
EXPECT_EQ(4u, vec.size());
EXPECT_EQ(4u, vec.span().size());
EXPECT_EQ(4u, vec.writable_span().size());
EXPECT_THAT(vec.span(), testing::ElementsAre(1, 2, 3, 4));
EXPECT_EQ(vec.span().data(), original_data_ptr);
EXPECT_EQ(0u, vec2.size());
EXPECT_TRUE(vec2.empty());
EXPECT_TRUE(vec2.span().empty());
EXPECT_TRUE(vec2.writable_span().empty());
}
TEST(FixedZeroedDataVector, AssignFromFixedUninitDataVector) {
FixedZeroedDataVector<int> vec;
FixedUninitDataVector<int> vec2(4);
constexpr int kData[] = {1, 2, 3, 4};
ASSERT_EQ(4u, vec2.writable_span().size());
fxcrt::spancpy(vec2.writable_span(), pdfium::make_span(kData));
vec = std::move(vec2);
EXPECT_TRUE(vec2.empty());
EXPECT_EQ(4u, vec.span().size());
EXPECT_THAT(vec.span(), testing::ElementsAre(1, 2, 3, 4));
}
TEST(FixedZeroedDataVector, AssignFromFixedTryAllocZeroedDataVector) {
FixedZeroedDataVector<int> vec;
FixedTryAllocZeroedDataVector<int> vec2(4);
constexpr int kData[] = {1, 2, 3, 4};
ASSERT_EQ(4u, vec2.writable_span().size());
fxcrt::spancpy(vec2.writable_span(), pdfium::make_span(kData));
vec = std::move(vec2);
EXPECT_TRUE(vec2.empty());
EXPECT_EQ(4u, vec.span().size());
EXPECT_THAT(vec.span(), testing::ElementsAre(1, 2, 3, 4));
}