mirror of
https://github.com/kidfromjupiter/nearby.git
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111 lines
3.3 KiB
C++
111 lines
3.3 KiB
C++
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "internal/platform/byte_utils.h"
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#include <cstdint>
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#include <string>
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#include <limits>
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#include "gtest/gtest.h"
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#include "absl/strings/string_view.h"
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#include "internal/platform/byte_array.h"
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namespace nearby {
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constexpr absl::string_view kFooBytes{"rawABCDE"};
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constexpr absl::string_view kFooFourDigitsToken{"0392"};
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constexpr absl::string_view kEmptyFourDigitsToken{"0000"};
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constexpr absl::string_view kNegativeBytes{"raw\xd5\x01\xe4\x03\x81"};
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constexpr absl::string_view kNegativeFourDigitsToken{"6251"};
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TEST(ByteUtilsTest, ToFourDigitStringCorrect) {
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ByteArray bytes{std::string(kFooBytes)};
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auto four_digit_string = byte_utils::ToFourDigitString(bytes);
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EXPECT_EQ(std::string(kFooFourDigitsToken), four_digit_string);
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}
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TEST(ByteUtilsTest, ToFourDigitStringNegativeCorrect) {
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ByteArray bytes{std::string(kNegativeBytes)};
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auto four_digit_string = byte_utils::ToFourDigitString(bytes);
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EXPECT_EQ(std::string(kNegativeFourDigitsToken), four_digit_string);
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}
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TEST(ByteUtilsTest, ToFourDigitStringHandlesEmptyInput) {
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ByteArray bytes{};
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auto four_digit_string = byte_utils::ToFourDigitString(bytes);
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EXPECT_EQ(std::string(kEmptyFourDigitsToken), four_digit_string);
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}
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TEST(ByteUtilsTest, IntToBytesThenBytesToIntIsSymmetric) {
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constexpr std::int32_t kTestValue = 123456789;
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ByteArray bytes = byte_utils::IntToBytes(kTestValue);
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EXPECT_EQ(kTestValue, byte_utils::BytesToInt(bytes));
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}
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TEST(ByteUtilsTest, IntToBytesThenBytesToIntIsSymmetricNegative) {
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constexpr std::int32_t kTestValue = -123456789;
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ByteArray bytes = byte_utils::IntToBytes(kTestValue);
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EXPECT_EQ(kTestValue, byte_utils::BytesToInt(bytes));
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}
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TEST(ByteUtilsTest, BytesToIntHandlesZero) {
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ByteArray bytes({'\0', '\0', '\0', '\0'});
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EXPECT_EQ(0, byte_utils::BytesToInt(bytes));
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}
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TEST(ByteUtilsTest, BytesToIntHandlesNegative) {
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ByteArray bytes({'\xff', '\xff', '\xff', '\xff'});
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EXPECT_EQ(-1, byte_utils::BytesToInt(bytes));
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}
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TEST(ByteUtilsTest, BytesToIntHandlesNegativeLarge) {
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ByteArray bytes({'\x80', '\x00', '\x00', '\x00'});
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EXPECT_EQ(std::numeric_limits<std::int32_t>::min(),
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byte_utils::BytesToInt(bytes));
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}
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TEST(ByteUtilsTest, IntToBytesHandlesZero) {
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ByteArray expected_bytes({'\0', '\0', '\0', '\0'});
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EXPECT_EQ(expected_bytes, byte_utils::IntToBytes(0));
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}
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TEST(ByteUtilsTest, HandlesInt32Max) {
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constexpr std::int32_t kMaxValue = std::numeric_limits<std::int32_t>::max();
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ByteArray bytes = byte_utils::IntToBytes(kMaxValue);
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EXPECT_EQ(kMaxValue, byte_utils::BytesToInt(bytes));
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}
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TEST(ByteUtilsTest, HandlesInt32Min) {
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constexpr std::int32_t kMinValue = std::numeric_limits<std::int32_t>::min();
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ByteArray bytes = byte_utils::IntToBytes(kMinValue);
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EXPECT_EQ(kMinValue, byte_utils::BytesToInt(bytes));
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}
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} // namespace nearby
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