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/*
* Copyright (C) 2020 The Android Open Source Project
*
* 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
*
* http://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 "SerializedLogChunk.h"
#include <limits>
#include <android-base/silent_death_test.h>
#include <android-base/stringprintf.h>
#include <android/log.h>
#include <gtest/gtest.h>
using SerializedLogChunk_DeathTest = SilentDeathTest;
using android::base::StringPrintf;
TEST(SerializedLogChunk, smoke) {
size_t chunk_size = 10 * 4096;
auto chunk = SerializedLogChunk{chunk_size};
EXPECT_EQ(chunk_size + sizeof(SerializedLogChunk), chunk.PruneSize());
static const char log_message[] = "log message";
size_t expected_total_len = sizeof(SerializedLogEntry) + sizeof(log_message);
ASSERT_TRUE(chunk.CanLog(expected_total_len));
EXPECT_TRUE(chunk.CanLog(chunk_size));
EXPECT_FALSE(chunk.CanLog(chunk_size + 1));
log_time time(CLOCK_REALTIME);
auto* entry = chunk.Log(1234, time, 0, 1, 2, log_message, sizeof(log_message));
ASSERT_NE(nullptr, entry);
EXPECT_EQ(1234U, entry->sequence());
EXPECT_EQ(time, entry->realtime());
EXPECT_EQ(0U, entry->uid());
EXPECT_EQ(1, entry->pid());
EXPECT_EQ(2, entry->tid());
EXPECT_EQ(sizeof(log_message), entry->msg_len());
EXPECT_STREQ(log_message, entry->msg());
EXPECT_EQ(expected_total_len, entry->total_len());
EXPECT_FALSE(chunk.CanLog(chunk_size));
EXPECT_EQ(static_cast<int>(expected_total_len), chunk.write_offset());
EXPECT_EQ(1234U, chunk.highest_sequence_number());
}
TEST(SerializedLogChunk, fill_log_exactly) {
static const char log_message[] = "this is a log message";
size_t individual_message_size = sizeof(SerializedLogEntry) + sizeof(log_message);
size_t chunk_size = individual_message_size * 3;
auto chunk = SerializedLogChunk{chunk_size};
EXPECT_EQ(chunk_size + sizeof(SerializedLogChunk), chunk.PruneSize());
ASSERT_TRUE(chunk.CanLog(individual_message_size));
EXPECT_NE(nullptr, chunk.Log(1, log_time(), 1000, 1, 1, log_message, sizeof(log_message)));
ASSERT_TRUE(chunk.CanLog(individual_message_size));
EXPECT_NE(nullptr, chunk.Log(2, log_time(), 1000, 2, 1, log_message, sizeof(log_message)));
ASSERT_TRUE(chunk.CanLog(individual_message_size));
EXPECT_NE(nullptr, chunk.Log(3, log_time(), 1000, 3, 1, log_message, sizeof(log_message)));
EXPECT_FALSE(chunk.CanLog(1));
}
TEST(SerializedLogChunk, three_logs) {
size_t chunk_size = 10 * 4096;
auto chunk = SerializedLogChunk{chunk_size};
chunk.Log(2, log_time(0x1234, 0x5678), 0x111, 0x222, 0x333, "initial message",
strlen("initial message"));
chunk.Log(3, log_time(0x2345, 0x6789), 0x444, 0x555, 0x666, "second message",
strlen("second message"));
auto uint64_t_max = std::numeric_limits<uint64_t>::max();
auto uint32_t_max = std::numeric_limits<uint32_t>::max();
chunk.Log(uint64_t_max, log_time(uint32_t_max, uint32_t_max), uint32_t_max, uint32_t_max,
uint32_t_max, "last message", strlen("last message"));
static const char expected_buffer_data[] =
"\x11\x01\x00\x00\x22\x02\x00\x00\x33\x03\x00\x00" // UID PID TID
"\x02\x00\x00\x00\x00\x00\x00\x00" // Sequence
"\x34\x12\x00\x00\x78\x56\x00\x00" // Timestamp
"\x0F\x00initial message" // msg_len + message
"\x44\x04\x00\x00\x55\x05\x00\x00\x66\x06\x00\x00" // UID PID TID
"\x03\x00\x00\x00\x00\x00\x00\x00" // Sequence
"\x45\x23\x00\x00\x89\x67\x00\x00" // Timestamp
"\x0E\x00second message" // msg_len + message
"\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF" // UID PID TID
"\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF" // Sequence
"\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF" // Timestamp
"\x0C\x00last message"; // msg_len + message
for (size_t i = 0; i < sizeof(expected_buffer_data) - 1; ++i) {
EXPECT_EQ(static_cast<uint8_t>(expected_buffer_data[i]), chunk.data()[i])
<< "position: " << i;
}
}
// Check that the CHECK() in DecReaderRefCount() if the ref count goes bad is caught.
TEST_F(SerializedLogChunk_DeathTest, catch_DecCompressedRef_CHECK) {
size_t chunk_size = 10 * 4096;
auto chunk = SerializedLogChunk{chunk_size};
EXPECT_DEATH({ chunk.DecReaderRefCount(); }, "");
}
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