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/*
* Copyright (C) 2019 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.
*/
package com.android.helpers.tests;
import static com.android.helpers.MetricUtility.constructKey;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import androidx.test.runner.AndroidJUnit4;
import com.android.helpers.RssSnapshotHelper;
import java.util.Map;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
/**
* Android Unit tests for {@link RssSnapshotHelper}.
*
* To run:
* atest CollectorsHelperTest:com.android.helpers.tests.RssSnapshotHelperTest
*/
@RunWith(AndroidJUnit4.class)
public class RssSnapshotHelperTest {
private static final String TAG = RssSnapshotHelperTest.class.getSimpleName();
// Valid output file
private static final String VALID_OUTPUT_DIR = "/sdcard/test_results";
// Invalid output file (no permissions to write)
private static final String INVALID_OUTPUT_DIR = "/data/local/tmp";
// Lists of process names
private static final String[] EMPTY_PROCESS_LIST = {};
private static final String[] ONE_PROCESS_LIST = {"com.android.systemui"};
private static final String[] TWO_PROCESS_LIST = {"com.android.systemui", "system_server"};
private static final String[] NO_PROCESS_LIST = {null};
private RssSnapshotHelper mRssSnapshotHelper;
@Before
public void setUp() {
mRssSnapshotHelper = new RssSnapshotHelper();
}
/**
* Test start collecting returns false if the helper has not been properly set up.
*/
@Test
public void testSetUpNotCalled() {
assertFalse(mRssSnapshotHelper.startCollecting());
}
/**
* Test invalid options for drop cache flag.
*/
@Test
public void testInvalidDropCacheOptions() {
assertFalse(mRssSnapshotHelper.setDropCacheOption(-1));
assertFalse(mRssSnapshotHelper.setDropCacheOption(0));
assertFalse(mRssSnapshotHelper.setDropCacheOption(4));
}
/**
* Test invalid options for drop cache flag.
*/
@Test
public void testValidDropCacheOptions() {
assertTrue(mRssSnapshotHelper.setDropCacheOption(1));
assertTrue(mRssSnapshotHelper.setDropCacheOption(2));
assertTrue(mRssSnapshotHelper.setDropCacheOption(3));
}
/**
* Test no metrics are sampled if process name is empty.
*/
@Test
public void testEmptyProcessName() {
mRssSnapshotHelper.setUp(VALID_OUTPUT_DIR, EMPTY_PROCESS_LIST);
Map<String, String> metrics = mRssSnapshotHelper.getMetrics();
assertTrue(metrics.isEmpty());
}
/**
* Test sampling on a valid and running process.
*/
@Test
public void testValidFile() {
mRssSnapshotHelper.setUp(VALID_OUTPUT_DIR, ONE_PROCESS_LIST);
assertTrue(mRssSnapshotHelper.startCollecting());
}
/**
* Test sampling on using an invalid output file.
*/
@Test
public void testInvalidFile() {
mRssSnapshotHelper.setUp(INVALID_OUTPUT_DIR, ONE_PROCESS_LIST);
assertFalse(mRssSnapshotHelper.startCollecting());
}
/**
* Test getting metrics from one process.
*/
@Test
public void testGetMetrics_OneProcess() {
testProcessList(ONE_PROCESS_LIST);
}
/**
* Test getting metrics from multiple processes process.
*/
@Test
public void testGetMetrics_MultipleProcesses() {
testProcessList(TWO_PROCESS_LIST);
}
/**
* Test all process flag return more than 2 processes metrics atleast.
*/
@Test
public void testGetMetrics_AllProcess() {
mRssSnapshotHelper.setUp(VALID_OUTPUT_DIR, NO_PROCESS_LIST);
mRssSnapshotHelper.setAllProcesses();
assertTrue(mRssSnapshotHelper.startCollecting());
Map<String, String> metrics = mRssSnapshotHelper.getMetrics();
assertTrue(metrics.size() > 2);
assertTrue(metrics.containsKey(RssSnapshotHelper.OUTPUT_FILE_PATH_KEY));
}
private void testProcessList(String... processNames) {
mRssSnapshotHelper.setUp(VALID_OUTPUT_DIR, processNames);
assertTrue(mRssSnapshotHelper.startCollecting());
Map<String, String> metrics = mRssSnapshotHelper.getMetrics();
assertFalse(metrics.isEmpty());
for (String processName : processNames) {
assertTrue(
metrics.containsKey(constructKey(RssSnapshotHelper.RSS_METRIC_PREFIX, processName)));
}
assertTrue(metrics.containsKey(RssSnapshotHelper.OUTPUT_FILE_PATH_KEY));
}
}
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