126 lines
5.2 KiB
C++
126 lines
5.2 KiB
C++
/*
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* Copyright 2020 The Android Open Source Project
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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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* http://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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*/
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#include "UidIoStatsCollector.h"
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#include <android-base/file.h>
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#include <android-base/stringprintf.h>
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#include <gmock/gmock.h>
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#include <unordered_map>
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namespace android {
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namespace automotive {
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namespace watchdog {
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using ::android::base::StringAppendF;
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using ::android::base::WriteStringToFile;
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using ::testing::UnorderedElementsAreArray;
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namespace {
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std::string toString(std::unordered_map<uid_t, UidIoStats> uidIoStatsByUid) {
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std::string buffer;
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for (const auto& [uid, stats] : uidIoStatsByUid) {
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StringAppendF(&buffer, "{%d: %s}\n", uid, stats.toString().c_str());
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}
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return buffer;
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}
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} // namespace
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TEST(UidIoStatsCollectorTest, TestValidStatFile) {
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// Format: uid fgRdChar fgWrChar fgRdBytes fgWrBytes bgRdChar bgWrChar bgRdBytes bgWrBytes
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// fgFsync bgFsync
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constexpr char firstSnapshot[] = "1001234 5000 1000 3000 500 0 0 0 0 20 0\n"
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"1005678 500 100 30 50 300 400 100 200 45 60\n"
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"1009 0 0 0 0 40000 50000 20000 30000 0 300\n"
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"1001000 4000 3000 2000 1000 400 300 200 100 50 10\n";
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std::unordered_map<uid_t, UidIoStats> expectedFirstUsage =
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{{1001234,
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UidIoStats{/*fgRdBytes=*/3'000, /*bgRdBytes=*/0, /*fgWrBytes=*/500,
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/*bgWrBytes=*/0, /*fgFsync=*/20, /*bgFsync=*/0}},
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{1005678,
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UidIoStats{/*fgRdBytes=*/30, /*bgRdBytes=*/100, /*fgWrBytes=*/50, /*bgWrBytes=*/200,
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/*fgFsync=*/45, /*bgFsync=*/60}},
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{1009,
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UidIoStats{/*fgRdBytes=*/0, /*bgRdBytes=*/20'000, /*fgWrBytes=*/0,
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/*bgWrBytes=*/30'000,
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/*fgFsync=*/0, /*bgFsync=*/300}},
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{1001000,
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UidIoStats{/*fgRdBytes=*/2'000, /*bgRdBytes=*/200, /*fgWrBytes=*/1'000,
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/*bgWrBytes=*/100, /*fgFsync=*/50, /*bgFsync=*/10}}};
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TemporaryFile tf;
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ASSERT_NE(tf.fd, -1);
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ASSERT_TRUE(WriteStringToFile(firstSnapshot, tf.path));
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UidIoStatsCollector collector(tf.path);
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collector.init();
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ASSERT_TRUE(collector.enabled()) << "Temporary file is inaccessible";
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ASSERT_RESULT_OK(collector.collect());
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const auto& actualFirstUsage = collector.deltaStats();
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EXPECT_THAT(actualFirstUsage, UnorderedElementsAreArray(expectedFirstUsage))
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<< "Expected: " << toString(expectedFirstUsage)
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<< "Actual: " << toString(actualFirstUsage);
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constexpr char secondSnapshot[] = "1001234 10000 2000 7000 950 0 0 0 0 45 0\n"
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"1005678 600 100 40 50 1000 1000 1000 600 50 70\n"
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"1003456 300 500 200 300 0 0 0 0 50 0\n"
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"1001000 400 300 200 100 40 30 20 10 5 1\n";
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std::unordered_map<uid_t, UidIoStats> expectedSecondUsage =
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{{1001234,
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UidIoStats{/*fgRdBytes=*/4'000, /*bgRdBytes=*/0,
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/*fgWrBytes=*/450, /*bgWrBytes=*/0, /*fgFsync=*/25,
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/*bgFsync=*/0}},
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{1005678,
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UidIoStats{/*fgRdBytes=*/10, /*bgRdBytes=*/900, /*fgWrBytes=*/0, /*bgWrBytes=*/400,
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/*fgFsync=*/5, /*bgFsync=*/10}},
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{1003456,
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UidIoStats{/*fgRdBytes=*/200, /*bgRdBytes=*/0, /*fgWrBytes=*/300, /*bgWrBytes=*/0,
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/*fgFsync=*/50, /*bgFsync=*/0}}};
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ASSERT_TRUE(WriteStringToFile(secondSnapshot, tf.path));
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ASSERT_RESULT_OK(collector.collect());
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const auto& actualSecondUsage = collector.deltaStats();
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EXPECT_THAT(actualSecondUsage, UnorderedElementsAreArray(expectedSecondUsage))
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<< "Expected: " << toString(expectedSecondUsage)
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<< "Actual: " << toString(actualSecondUsage);
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}
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TEST(UidIoStatsCollectorTest, TestErrorOnInvalidStatFile) {
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// Format: uid fgRdChar fgWrChar fgRdBytes fgWrBytes bgRdChar bgWrChar bgRdBytes bgWrBytes
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// fgFsync bgFsync
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constexpr char contents[] = "1001234 5000 1000 3000 500 0 0 0 0 20 0\n"
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"1005678 500 100 30 50 300 400 100 200 45 60\n"
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"1009012 0 0 0 0 40000 50000 20000 30000 0 300\n"
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"1001000 4000 3000 2000 1000 CORRUPTED DATA\n";
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TemporaryFile tf;
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ASSERT_NE(tf.fd, -1);
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ASSERT_TRUE(WriteStringToFile(contents, tf.path));
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UidIoStatsCollector collector(tf.path);
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collector.init();
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ASSERT_TRUE(collector.enabled()) << "Temporary file is inaccessible";
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EXPECT_FALSE(collector.collect().ok()) << "No error returned for invalid file";
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}
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} // namespace watchdog
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} // namespace automotive
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} // namespace android
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