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platform_system_core/libcutils/trace-dev_test.cpp
Elliott Hughes 01705e4f1d Clean up libcutils/libutils tests. 
Move tests in the same directory as the corresponding code, so it's
easier to see what is/isn't tested.

Fix naming of libcutils_tests (plural) to match the singular that's more
common (even though the plural makes more sense to me).

Add these two to system/core/'s TEST_MAPPING.

Remove obsolete AndroidTest.xml.

Fix a flaky (timing-dependent) libcutils test.

Test: ran tests
Change-Id: I7e0a31ff45c8a152562bf66fc97161594249366e
2019-02-11 13:15:56 -08:00

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/*
* Copyright (C) 2016 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 <sys/types.h>
#include <unistd.h>
#include <memory>
#include <string>
#include <android-base/file.h>
#include <android-base/stringprintf.h>
#include <gtest/gtest.h>
#include "../trace-dev.cpp"
class TraceDevTest : public ::testing::Test {
protected:
void SetUp() override {
lseek(tmp_file_.fd, 0, SEEK_SET);
atrace_marker_fd = tmp_file_.fd;
}
void TearDown() override {
atrace_marker_fd = -1;
}
TemporaryFile tmp_file_;
static std::string MakeName(size_t length) {
std::string name;
for (size_t i = 0; i < length; i++) {
name += '0' + (i % 10);
}
return name;
}
};
TEST_F(TraceDevTest, atrace_begin_body_normal) {
atrace_begin_body("fake_name");
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
std::string actual;
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
std::string expected = android::base::StringPrintf("B|%d|fake_name", getpid());
ASSERT_STREQ(expected.c_str(), actual.c_str());
}
TEST_F(TraceDevTest, atrace_begin_body_exact) {
std::string expected = android::base::StringPrintf("B|%d|", getpid());
std::string name = MakeName(ATRACE_MESSAGE_LENGTH - expected.length() - 1);
atrace_begin_body(name.c_str());
ASSERT_EQ(ATRACE_MESSAGE_LENGTH - 1, lseek(atrace_marker_fd, 0, SEEK_CUR));
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
std::string actual;
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
expected += name;
ASSERT_STREQ(expected.c_str(), actual.c_str());
// Add a single character and verify we get the exact same value as before.
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
name += '*';
atrace_begin_body(name.c_str());
EXPECT_EQ(ATRACE_MESSAGE_LENGTH - 1, lseek(atrace_marker_fd, 0, SEEK_CUR));
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
ASSERT_STREQ(expected.c_str(), actual.c_str());
}
TEST_F(TraceDevTest, atrace_begin_body_truncated) {
std::string expected = android::base::StringPrintf("B|%d|", getpid());
std::string name = MakeName(2 * ATRACE_MESSAGE_LENGTH);
atrace_begin_body(name.c_str());
ASSERT_EQ(ATRACE_MESSAGE_LENGTH - 1, lseek(atrace_marker_fd, 0, SEEK_CUR));
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
std::string actual;
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
int expected_len = ATRACE_MESSAGE_LENGTH - expected.length() - 1;
expected += android::base::StringPrintf("%.*s", expected_len, name.c_str());
ASSERT_STREQ(expected.c_str(), actual.c_str());
}
TEST_F(TraceDevTest, atrace_async_begin_body_normal) {
atrace_async_begin_body("fake_name", 12345);
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
std::string actual;
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
std::string expected = android::base::StringPrintf("S|%d|fake_name|12345", getpid());
ASSERT_STREQ(expected.c_str(), actual.c_str());
}
TEST_F(TraceDevTest, atrace_async_begin_body_exact) {
std::string expected = android::base::StringPrintf("S|%d|", getpid());
std::string name = MakeName(ATRACE_MESSAGE_LENGTH - expected.length() - 7);
atrace_async_begin_body(name.c_str(), 12345);
ASSERT_EQ(ATRACE_MESSAGE_LENGTH - 1, lseek(atrace_marker_fd, 0, SEEK_CUR));
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
std::string actual;
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
expected += name + "|12345";
ASSERT_STREQ(expected.c_str(), actual.c_str());
// Add a single character and verify we get the exact same value as before.
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
name += '*';
atrace_async_begin_body(name.c_str(), 12345);
EXPECT_EQ(ATRACE_MESSAGE_LENGTH - 1, lseek(atrace_marker_fd, 0, SEEK_CUR));
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
ASSERT_STREQ(expected.c_str(), actual.c_str());
}
TEST_F(TraceDevTest, atrace_async_begin_body_truncated) {
std::string expected = android::base::StringPrintf("S|%d|", getpid());
std::string name = MakeName(2 * ATRACE_MESSAGE_LENGTH);
atrace_async_begin_body(name.c_str(), 12345);
ASSERT_EQ(ATRACE_MESSAGE_LENGTH - 1, lseek(atrace_marker_fd, 0, SEEK_CUR));
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
std::string actual;
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
int expected_len = ATRACE_MESSAGE_LENGTH - expected.length() - 7;
expected += android::base::StringPrintf("%.*s|12345", expected_len, name.c_str());
ASSERT_STREQ(expected.c_str(), actual.c_str());
}
TEST_F(TraceDevTest, atrace_async_end_body_normal) {
atrace_async_end_body("fake_name", 12345);
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
std::string actual;
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
std::string expected = android::base::StringPrintf("F|%d|fake_name|12345", getpid());
ASSERT_STREQ(expected.c_str(), actual.c_str());
}
TEST_F(TraceDevTest, atrace_async_end_body_exact) {
std::string expected = android::base::StringPrintf("F|%d|", getpid());
std::string name = MakeName(ATRACE_MESSAGE_LENGTH - expected.length() - 7);
atrace_async_end_body(name.c_str(), 12345);
ASSERT_EQ(ATRACE_MESSAGE_LENGTH - 1, lseek(atrace_marker_fd, 0, SEEK_CUR));
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
std::string actual;
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
expected += name + "|12345";
ASSERT_STREQ(expected.c_str(), actual.c_str());
// Add a single character and verify we get the exact same value as before.
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
name += '*';
atrace_async_end_body(name.c_str(), 12345);
EXPECT_EQ(ATRACE_MESSAGE_LENGTH - 1, lseek(atrace_marker_fd, 0, SEEK_CUR));
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
ASSERT_STREQ(expected.c_str(), actual.c_str());
}
TEST_F(TraceDevTest, atrace_async_end_body_truncated) {
std::string expected = android::base::StringPrintf("F|%d|", getpid());
std::string name = MakeName(2 * ATRACE_MESSAGE_LENGTH);
atrace_async_end_body(name.c_str(), 12345);
ASSERT_EQ(ATRACE_MESSAGE_LENGTH - 1, lseek(atrace_marker_fd, 0, SEEK_CUR));
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
std::string actual;
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
int expected_len = ATRACE_MESSAGE_LENGTH - expected.length() - 7;
expected += android::base::StringPrintf("%.*s|12345", expected_len, name.c_str());
ASSERT_STREQ(expected.c_str(), actual.c_str());
}
TEST_F(TraceDevTest, atrace_int_body_normal) {
atrace_int_body("fake_name", 12345);
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
std::string actual;
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
std::string expected = android::base::StringPrintf("C|%d|fake_name|12345", getpid());
ASSERT_STREQ(expected.c_str(), actual.c_str());
}
TEST_F(TraceDevTest, atrace_int_body_exact) {
std::string expected = android::base::StringPrintf("C|%d|", getpid());
std::string name = MakeName(ATRACE_MESSAGE_LENGTH - expected.length() - 7);
atrace_int_body(name.c_str(), 12345);
ASSERT_EQ(ATRACE_MESSAGE_LENGTH - 1, lseek(atrace_marker_fd, 0, SEEK_CUR));
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
std::string actual;
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
expected += name + "|12345";
ASSERT_STREQ(expected.c_str(), actual.c_str());
// Add a single character and verify we get the exact same value as before.
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
name += '*';
atrace_int_body(name.c_str(), 12345);
EXPECT_EQ(ATRACE_MESSAGE_LENGTH - 1, lseek(atrace_marker_fd, 0, SEEK_CUR));
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
ASSERT_STREQ(expected.c_str(), actual.c_str());
}
TEST_F(TraceDevTest, atrace_int_body_truncated) {
std::string expected = android::base::StringPrintf("C|%d|", getpid());
std::string name = MakeName(2 * ATRACE_MESSAGE_LENGTH);
atrace_int_body(name.c_str(), 12345);
ASSERT_EQ(ATRACE_MESSAGE_LENGTH - 1, lseek(atrace_marker_fd, 0, SEEK_CUR));
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
std::string actual;
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
int expected_len = ATRACE_MESSAGE_LENGTH - expected.length() - 7;
expected += android::base::StringPrintf("%.*s|12345", expected_len, name.c_str());
ASSERT_STREQ(expected.c_str(), actual.c_str());
}
TEST_F(TraceDevTest, atrace_int64_body_normal) {
atrace_int64_body("fake_name", 17179869183L);
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
std::string actual;
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
std::string expected = android::base::StringPrintf("C|%d|fake_name|17179869183", getpid());
ASSERT_STREQ(expected.c_str(), actual.c_str());
}
TEST_F(TraceDevTest, atrace_int64_body_exact) {
std::string expected = android::base::StringPrintf("C|%d|", getpid());
std::string name = MakeName(ATRACE_MESSAGE_LENGTH - expected.length() - 13);
atrace_int64_body(name.c_str(), 17179869183L);
ASSERT_EQ(ATRACE_MESSAGE_LENGTH - 1, lseek(atrace_marker_fd, 0, SEEK_CUR));
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
std::string actual;
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
expected += name + "|17179869183";
ASSERT_STREQ(expected.c_str(), actual.c_str());
// Add a single character and verify we get the exact same value as before.
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
name += '*';
atrace_int64_body(name.c_str(), 17179869183L);
EXPECT_EQ(ATRACE_MESSAGE_LENGTH - 1, lseek(atrace_marker_fd, 0, SEEK_CUR));
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
ASSERT_STREQ(expected.c_str(), actual.c_str());
}
TEST_F(TraceDevTest, atrace_int64_body_truncated) {
std::string expected = android::base::StringPrintf("C|%d|", getpid());
std::string name = MakeName(2 * ATRACE_MESSAGE_LENGTH);
atrace_int64_body(name.c_str(), 17179869183L);
ASSERT_EQ(ATRACE_MESSAGE_LENGTH - 1, lseek(atrace_marker_fd, 0, SEEK_CUR));
ASSERT_EQ(0, lseek(atrace_marker_fd, 0, SEEK_SET));
std::string actual;
ASSERT_TRUE(android::base::ReadFdToString(atrace_marker_fd, &actual));
int expected_len = ATRACE_MESSAGE_LENGTH - expected.length() - 13;
expected += android::base::StringPrintf("%.*s|17179869183", expected_len, name.c_str());
ASSERT_STREQ(expected.c_str(), actual.c_str());
}
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