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/*
* Copyright (C) 2011 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 android.net;
import static android.net.NetworkStats.TAG_NONE;
import android.test.suitebuilder.annotation.SmallTest;
import junit.framework.TestCase;
@SmallTest
public class NetworkStatsTest extends TestCase {
private static final String TEST_IFACE = "test0";
private static final int TEST_UID = 1001;
private static final long TEST_START = 1194220800000L;
public void testFindIndex() throws Exception {
final NetworkStats stats = new NetworkStats(TEST_START, 3)
.addEntry(TEST_IFACE, 100, TAG_NONE, 1024L, 0L)
.addEntry(TEST_IFACE, 101, TAG_NONE, 0L, 1024L)
.addEntry(TEST_IFACE, 102, TAG_NONE, 1024L, 1024L);
assertEquals(2, stats.findIndex(TEST_IFACE, 102, TAG_NONE));
assertEquals(2, stats.findIndex(TEST_IFACE, 102, TAG_NONE));
assertEquals(0, stats.findIndex(TEST_IFACE, 100, TAG_NONE));
assertEquals(-1, stats.findIndex(TEST_IFACE, 6, TAG_NONE));
}
public void testAddEntryGrow() throws Exception {
final NetworkStats stats = new NetworkStats(TEST_START, 2);
assertEquals(0, stats.size);
assertEquals(2, stats.iface.length);
stats.addEntry(TEST_IFACE, TEST_UID, TAG_NONE, 1L, 2L);
stats.addEntry(TEST_IFACE, TEST_UID, TAG_NONE, 2L, 2L);
assertEquals(2, stats.size);
assertEquals(2, stats.iface.length);
stats.addEntry(TEST_IFACE, TEST_UID, TAG_NONE, 3L, 4L);
stats.addEntry(TEST_IFACE, TEST_UID, TAG_NONE, 4L, 4L);
stats.addEntry(TEST_IFACE, TEST_UID, TAG_NONE, 5L, 5L);
assertEquals(5, stats.size);
assertTrue(stats.iface.length >= 5);
assertEquals(1L, stats.rx[0]);
assertEquals(2L, stats.rx[1]);
assertEquals(3L, stats.rx[2]);
assertEquals(4L, stats.rx[3]);
assertEquals(5L, stats.rx[4]);
}
public void testCombineExisting() throws Exception {
final NetworkStats stats = new NetworkStats(TEST_START, 10);
stats.addEntry(TEST_IFACE, 1001, TAG_NONE, 512L, 256L);
stats.addEntry(TEST_IFACE, 1001, 0xff, 128L, 128L);
stats.combineEntry(TEST_IFACE, 1001, TAG_NONE, -128L, -128L);
assertStatsEntry(stats, 0, TEST_IFACE, 1001, TAG_NONE, 384L, 128L);
assertStatsEntry(stats, 1, TEST_IFACE, 1001, 0xff, 128L, 128L);
// now try combining that should create row
stats.combineEntry(TEST_IFACE, 5005, TAG_NONE, 128L, 128L);
assertStatsEntry(stats, 2, TEST_IFACE, 5005, TAG_NONE, 128L, 128L);
stats.combineEntry(TEST_IFACE, 5005, TAG_NONE, 128L, 128L);
assertStatsEntry(stats, 2, TEST_IFACE, 5005, TAG_NONE, 256L, 256L);
}
public void testSubtractIdenticalData() throws Exception {
final NetworkStats before = new NetworkStats(TEST_START, 2)
.addEntry(TEST_IFACE, 100, TAG_NONE, 1024L, 0L)
.addEntry(TEST_IFACE, 101, TAG_NONE, 0L, 1024L);
final NetworkStats after = new NetworkStats(TEST_START, 2)
.addEntry(TEST_IFACE, 100, TAG_NONE, 1024L, 0L)
.addEntry(TEST_IFACE, 101, TAG_NONE, 0L, 1024L);
final NetworkStats result = after.subtract(before);
// identical data should result in zero delta
assertEquals(0, result.rx[0]);
assertEquals(0, result.tx[0]);
assertEquals(0, result.rx[1]);
assertEquals(0, result.tx[1]);
}
public void testSubtractIdenticalRows() throws Exception {
final NetworkStats before = new NetworkStats(TEST_START, 2)
.addEntry(TEST_IFACE, 100, TAG_NONE, 1024L, 0L)
.addEntry(TEST_IFACE, 101, TAG_NONE, 0L, 1024L);
final NetworkStats after = new NetworkStats(TEST_START, 2)
.addEntry(TEST_IFACE, 100, TAG_NONE, 1025L, 2L)
.addEntry(TEST_IFACE, 101, TAG_NONE, 3L, 1028L);
final NetworkStats result = after.subtract(before);
// expect delta between measurements
assertEquals(1, result.rx[0]);
assertEquals(2, result.tx[0]);
assertEquals(3, result.rx[1]);
assertEquals(4, result.tx[1]);
}
public void testSubtractNewRows() throws Exception {
final NetworkStats before = new NetworkStats(TEST_START, 2)
.addEntry(TEST_IFACE, 100, TAG_NONE, 1024L, 0L)
.addEntry(TEST_IFACE, 101, TAG_NONE, 0L, 1024L);
final NetworkStats after = new NetworkStats(TEST_START, 3)
.addEntry(TEST_IFACE, 100, TAG_NONE, 1024L, 0L)
.addEntry(TEST_IFACE, 101, TAG_NONE, 0L, 1024L)
.addEntry(TEST_IFACE, 102, TAG_NONE, 1024L, 1024L);
final NetworkStats result = after.subtract(before);
// its okay to have new rows
assertEquals(0, result.rx[0]);
assertEquals(0, result.tx[0]);
assertEquals(0, result.rx[1]);
assertEquals(0, result.tx[1]);
assertEquals(1024, result.rx[2]);
assertEquals(1024, result.tx[2]);
}
private static void assertStatsEntry(
NetworkStats stats, int i, String iface, int uid, int tag, long rx, long tx) {
assertEquals(iface, stats.iface[i]);
assertEquals(uid, stats.uid[i]);
assertEquals(tag, stats.tag[i]);
assertEquals(rx, stats.rx[i]);
assertEquals(tx, stats.tx[i]);
}
}
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