NetworkStatsTest.java revision 4a97122ebf4d92a3f94402041729d77905e6c0c0 
1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.net;
18
19import android.test.suitebuilder.annotation.SmallTest;
20
21import junit.framework.TestCase;
22
23@SmallTest
24public class NetworkStatsTest extends TestCase {
25
26    private static final String TEST_IFACE = "test0";
27    private static final int TEST_UID = 1001;
28    private static final long TEST_START = 1194220800000L;
29
30    public void testFindIndex() throws Exception {
31        final NetworkStats stats = new NetworkStats(TEST_START, 3)
32                .addEntry(TEST_IFACE, 100, 1024, 0)
33                .addEntry(TEST_IFACE, 101, 0, 1024)
34                .addEntry(TEST_IFACE, 102, 1024, 1024);
35
36        assertEquals(2, stats.findIndex(TEST_IFACE, 102));
37        assertEquals(2, stats.findIndex(TEST_IFACE, 102));
38        assertEquals(0, stats.findIndex(TEST_IFACE, 100));
39        assertEquals(-1, stats.findIndex(TEST_IFACE, 6));
40    }
41
42    public void testAddEntryGrow() throws Exception {
43        final NetworkStats stats = new NetworkStats(TEST_START, 2);
44
45        assertEquals(0, stats.size);
46        assertEquals(2, stats.iface.length);
47
48        stats.addEntry(TEST_IFACE, TEST_UID, 1L, 2L);
49        stats.addEntry(TEST_IFACE, TEST_UID, 2L, 2L);
50
51        assertEquals(2, stats.size);
52        assertEquals(2, stats.iface.length);
53
54        stats.addEntry(TEST_IFACE, TEST_UID, 3L, 4L);
55        stats.addEntry(TEST_IFACE, TEST_UID, 4L, 4L);
56        stats.addEntry(TEST_IFACE, TEST_UID, 5L, 5L);
57
58        assertEquals(5, stats.size);
59        assertTrue(stats.iface.length >= 5);
60
61        assertEquals(1L, stats.rx[0]);
62        assertEquals(2L, stats.rx[1]);
63        assertEquals(3L, stats.rx[2]);
64        assertEquals(4L, stats.rx[3]);
65        assertEquals(5L, stats.rx[4]);
66    }
67
68    public void testSubtractIdenticalData() throws Exception {
69        final NetworkStats before = new NetworkStats(TEST_START, 2)
70                .addEntry(TEST_IFACE, 100, 1024, 0)
71                .addEntry(TEST_IFACE, 101, 0, 1024);
72
73        final NetworkStats after = new NetworkStats(TEST_START, 2)
74                .addEntry(TEST_IFACE, 100, 1024, 0)
75                .addEntry(TEST_IFACE, 101, 0, 1024);
76
77        final NetworkStats result = after.subtract(before);
78
79        // identical data should result in zero delta
80        assertEquals(0, result.rx[0]);
81        assertEquals(0, result.tx[0]);
82        assertEquals(0, result.rx[1]);
83        assertEquals(0, result.tx[1]);
84    }
85
86    public void testSubtractIdenticalRows() throws Exception {
87        final NetworkStats before = new NetworkStats(TEST_START, 2)
88                .addEntry(TEST_IFACE, 100, 1024, 0)
89                .addEntry(TEST_IFACE, 101, 0, 1024);
90
91        final NetworkStats after = new NetworkStats(TEST_START, 2)
92                .addEntry(TEST_IFACE, 100, 1025, 2)
93                .addEntry(TEST_IFACE, 101, 3, 1028);
94
95        final NetworkStats result = after.subtract(before);
96
97        // expect delta between measurements
98        assertEquals(1, result.rx[0]);
99        assertEquals(2, result.tx[0]);
100        assertEquals(3, result.rx[1]);
101        assertEquals(4, result.tx[1]);
102    }
103
104    public void testSubtractNewRows() throws Exception {
105        final NetworkStats before = new NetworkStats(TEST_START, 2)
106                .addEntry(TEST_IFACE, 100, 1024, 0)
107                .addEntry(TEST_IFACE, 101, 0, 1024);
108
109        final NetworkStats after = new NetworkStats(TEST_START, 3)
110                .addEntry(TEST_IFACE, 100, 1024, 0)
111                .addEntry(TEST_IFACE, 101, 0, 1024)
112                .addEntry(TEST_IFACE, 102, 1024, 1024);
113
114        final NetworkStats result = after.subtract(before);
115
116        // its okay to have new rows
117        assertEquals(0, result.rx[0]);
118        assertEquals(0, result.tx[0]);
119        assertEquals(0, result.rx[1]);
120        assertEquals(0, result.tx[1]);
121        assertEquals(1024, result.rx[2]);
122        assertEquals(1024, result.tx[2]);
123    }
124
125}
126