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// Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Tests for the generated View class for Container and Box from
// nested_structure.emb.
//
// These tests check that nested structures work.
#include <gtest/gtest.h>
#include <stdint.h>
#include <vector>
#include "testdata/int_sizes.emb.h"
namespace emboss {
namespace test {
namespace {
alignas(8) static const ::std::uint8_t kIntSizes[36] = {
0x02, // 0:1 one_byte == 2
0xfc, 0xfe, // 1:3 two_byte == -260
0x66, 0x55, 0x44, // 3:6 three_byte == 0x445566
0xfa, 0xfa, 0xfb, 0xfc, // 6:10 four_byte == -0x03040506
0x21, 0x43, 0x65, 0x87, // 10:14 five_byte
0x29, // 14:15 five_byte == 0x2987654321
0x44, 0x65, 0x87, 0xa9, // 15:19 six_byte
0xcb, 0xed, // 19:21 six_byte == -0x123456789abc
0x97, 0xa6, 0xb5, 0xc4, // 21:25 seven_byte
0xd3, 0xe2, 0x71, // 25:28 seven_byte == 0x71e2d3c4b5a697
0xfa, 0xfa, 0xfb, 0xfc, // 28:32 eight_byte
0xfd, 0xfe, 0xff, 0x80, // 32:36 eight_byte == -0x7f00010203040506
};
TEST(SizesView, CanReadSizes) {
auto view = MakeAlignedSizesView<const ::std::uint8_t, 8>(kIntSizes,
sizeof kIntSizes);
EXPECT_EQ(2, view.one_byte().Read());
EXPECT_EQ(-260, view.two_byte().Read());
EXPECT_EQ(0x445566, view.three_byte().Read());
EXPECT_EQ(-0x03040506, view.four_byte().Read());
EXPECT_EQ(0x2987654321, view.five_byte().Read());
EXPECT_EQ(-0x123456789abc, view.six_byte().Read());
EXPECT_EQ(0x71e2d3c4b5a697, view.seven_byte().Read());
EXPECT_EQ(-0x7f00010203040506, view.eight_byte().Read());
// Test that the views return appropriate integer widths.
EXPECT_EQ(1U, sizeof(view.one_byte().Read()));
EXPECT_EQ(2U, sizeof(view.two_byte().Read()));
EXPECT_EQ(4U, sizeof(view.three_byte().Read()));
EXPECT_EQ(4U, sizeof(view.four_byte().Read()));
EXPECT_EQ(8U, sizeof(view.five_byte().Read()));
EXPECT_EQ(8U, sizeof(view.six_byte().Read()));
EXPECT_EQ(8U, sizeof(view.seven_byte().Read()));
EXPECT_EQ(8U, sizeof(view.eight_byte().Read()));
}
TEST(SizesWriter, CanWriteSizes) {
::std::uint8_t buffer[sizeof kIntSizes];
auto writer = SizesWriter(buffer, sizeof buffer);
writer.one_byte().Write(2);
writer.two_byte().Write(-260);
writer.three_byte().Write(0x445566);
writer.four_byte().Write(-0x03040506);
writer.five_byte().Write(0x2987654321);
writer.six_byte().Write(-0x123456789abc);
writer.seven_byte().Write(0x71e2d3c4b5a697);
writer.eight_byte().Write(-0x7f00010203040506);
EXPECT_EQ(::std::vector</**/ ::std::uint8_t>(kIntSizes,
kIntSizes + sizeof kIntSizes),
::std::vector</**/ ::std::uint8_t>(buffer, buffer + sizeof buffer));
}
alignas(8) static const ::std::uint8_t kIntSizesNegativeOnes[36] = {
0xff, // 0:1 one_byte == -1
0xff, 0xff, // 1:3 two_byte == -1
0xff, 0xff, 0xff, // 3:6 three_byte == -1
0xff, 0xff, 0xff, 0xff, // 6:10 four_byte == -1
0xff, 0xff, 0xff, 0xff, // 10:14 five_byte
0xff, // 14:15 five_byte == -1
0xff, 0xff, 0xff, 0xff, // 15:19 six_byte
0xff, 0xff, // 19:21 six_byte == -1
0xff, 0xff, 0xff, 0xff, // 21:25 seven_byte
0xff, 0xff, 0xff, // 25:28 seven_byte == -1
0xff, 0xff, 0xff, 0xff, // 28:32 eight_byte
0xff, 0xff, 0xff, 0xff, // 32:36 eight_byte == -1
};
TEST(SizesView, CanReadNegativeOne) {
auto view = MakeAlignedSizesView<const ::std::uint8_t, 8>(
kIntSizesNegativeOnes, sizeof kIntSizesNegativeOnes);
EXPECT_EQ(-1, view.one_byte().Read());
EXPECT_EQ(-1, view.two_byte().Read());
EXPECT_EQ(-1, view.three_byte().Read());
EXPECT_EQ(-1, view.four_byte().Read());
EXPECT_EQ(-1, view.five_byte().Read());
EXPECT_EQ(-1, view.six_byte().Read());
EXPECT_EQ(-1, view.seven_byte().Read());
EXPECT_EQ(-1, view.eight_byte().Read());
}
TEST(SizesView, CanWriteNegativeOne) {
::std::uint8_t buffer[sizeof kIntSizesNegativeOnes];
auto writer = SizesWriter(buffer, sizeof buffer);
writer.one_byte().Write(-1);
writer.two_byte().Write(-1);
writer.three_byte().Write(-1);
writer.four_byte().Write(-1);
writer.five_byte().Write(-1);
writer.six_byte().Write(-1);
writer.seven_byte().Write(-1);
writer.eight_byte().Write(-1);
EXPECT_EQ(::std::vector</**/ ::std::uint8_t>(
kIntSizesNegativeOnes,
kIntSizesNegativeOnes + sizeof kIntSizesNegativeOnes),
::std::vector</**/ ::std::uint8_t>(buffer, buffer + sizeof buffer));
}
TEST(SizesView, CopyFrom) {
::std::array</**/ ::std::uint8_t, sizeof kIntSizesNegativeOnes> buf_x = {};
::std::array</**/ ::std::uint8_t, sizeof kIntSizesNegativeOnes> buf_y = {};
auto x = SizesWriter(&buf_x);
auto y = SizesWriter(&buf_y);
constexpr int kValue = -1;
x.one_byte().Write(kValue);
EXPECT_NE(x.one_byte().Read(), y.one_byte().Read());
y.one_byte().CopyFrom(x.one_byte());
EXPECT_EQ(x.one_byte().Read(), y.one_byte().Read());
}
TEST(SizesView, TryToCopyFrom) {
::std::array</**/ ::std::uint8_t, sizeof kIntSizesNegativeOnes> buf_x = {};
::std::array</**/ ::std::uint8_t, sizeof kIntSizesNegativeOnes> buf_y = {};
auto x = SizesWriter(&buf_x);
auto y = SizesWriter(&buf_y);
constexpr int kValue = -1;
x.one_byte().Write(kValue);
EXPECT_NE(x.one_byte().Read(), y.one_byte().Read());
EXPECT_TRUE(y.one_byte().TryToCopyFrom(x.one_byte()));
EXPECT_EQ(x.one_byte().Read(), y.one_byte().Read());
}
} // namespace
} // namespace test
} // namespace emboss