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// Copyright 2020 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.
#include "platform/base/byte_array.h"
#include <cstring>
#include "gtest/gtest.h"
namespace {
using location::nearby::ByteArray;
TEST(ByteArrayTest, DefaultSizeIsZero) {
ByteArray bytes;
EXPECT_EQ(0, bytes.size());
}
TEST(ByteArrayTest, DefaultIsEmpty) {
ByteArray bytes;
EXPECT_TRUE(bytes.Empty());
}
TEST(ByteArrayTest, NullArrayIsEmpty) {
ByteArray bytes{nullptr, 5};
EXPECT_TRUE(bytes.Empty());
}
TEST(ByteArrayTest, CopyAtDoesNotExtendArray) {
ByteArray v1("12345");
ByteArray v2("ABCDEFGH");
EXPECT_TRUE(v2.CopyAt(/*offset=*/5, v1));
EXPECT_TRUE(v2.CopyAt(/*offset=*/1, v1, /*source_offset=*/3));
EXPECT_EQ(v2, ByteArray("A45DE123"));
}
TEST(ByteArrayTest, CopyAtOutOfBoundsIsIgnored) {
ByteArray v1("12345");
ByteArray v2("ABCDEFGH");
// Try to do an out-of-bounds read.
EXPECT_FALSE(v2.CopyAt(/* offset=*/5, v1, /*source_offset=*/10));
// Try to do an out-of-bounds write.
EXPECT_FALSE(v2.CopyAt(/* offset=*/9, v1));
EXPECT_EQ(v2, ByteArray("ABCDEFGH"));
}
TEST(ByteArrayTest, SetFromString) {
std::string setup("setup_test");
ByteArray bytes{setup}; // array initialized with a copy of string.
EXPECT_EQ(setup.size(), bytes.size());
EXPECT_EQ(std::string(bytes), setup);
}
TEST(ByteArrayTest, SetExplicitSize) {
constexpr size_t kArraySize = 10;
char reference[kArraySize]{};
ByteArray bytes{kArraySize}; // array of size 10, zero-initialized.
EXPECT_EQ(kArraySize, bytes.size());
EXPECT_EQ(0, memcmp(bytes.data(), reference, kArraySize));
}
TEST(ByteArrayTest, SetExplicitData) {
constexpr static const char message[]{"test_message"};
constexpr size_t kMessageSize = sizeof(message);
ByteArray bytes{message, kMessageSize};
EXPECT_EQ(kMessageSize, bytes.size());
EXPECT_NE(message, bytes.data());
EXPECT_EQ(0, memcmp(message, bytes.data(), kMessageSize));
}
TEST(ByteArrayTest, CreateFromNonNullTerminatedStdArray) {
constexpr static const std::array data{'a', '\x00', 'b'};
ByteArray bytes{data};
EXPECT_EQ(bytes.size(), 3);
EXPECT_EQ(bytes.size(), std::string(bytes).size());
EXPECT_EQ(std::string(bytes), std::string(data.data(), data.size()));
}
} // namespace
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