Sudheer Shanka | 9b735c5 | 2017-05-09 18:26:18 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2017 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 | |
| 17 | package com.android.internal.os; |
| 18 | |
| 19 | import static org.mockito.Mockito.verify; |
| 20 | import static org.mockito.Mockito.verifyNoMoreInteractions; |
Sudheer Shanka | 59f5c00 | 2017-05-15 10:57:15 -0700 | [diff] [blame] | 21 | import static org.mockito.Mockito.verifyZeroInteractions; |
Sudheer Shanka | 9b735c5 | 2017-05-09 18:26:18 -0700 | [diff] [blame] | 22 | import static org.mockito.Mockito.when; |
| 23 | |
| 24 | import android.support.test.filters.SmallTest; |
| 25 | import android.support.test.runner.AndroidJUnit4; |
| 26 | |
| 27 | import org.junit.Before; |
| 28 | import org.junit.Test; |
| 29 | import org.junit.runner.RunWith; |
| 30 | import org.mockito.Mock; |
Sudheer Shanka | 59f5c00 | 2017-05-15 10:57:15 -0700 | [diff] [blame] | 31 | import org.mockito.Mockito; |
Sudheer Shanka | 9b735c5 | 2017-05-09 18:26:18 -0700 | [diff] [blame] | 32 | import org.mockito.MockitoAnnotations; |
| 33 | |
| 34 | import java.io.BufferedReader; |
| 35 | |
| 36 | /** |
| 37 | * Test class for {@link KernelUidCpuFreqTimeReader}. |
| 38 | * |
| 39 | * To run the tests, use |
| 40 | * |
| 41 | * runtest -c com.android.internal.os.KernelUidCpuFreqTimeReaderTest frameworks-core |
| 42 | * |
| 43 | * or the following steps: |
| 44 | * |
| 45 | * Build: m FrameworksCoreTests |
| 46 | * Install: adb install -r \ |
| 47 | * ${ANDROID_PRODUCT_OUT}/data/app/FrameworksCoreTests/FrameworksCoreTests.apk |
| 48 | * Run: adb shell am instrument -e class com.android.internal.os.KernelUidCpuFreqTimeReaderTest -w \ |
| 49 | * com.android.frameworks.coretests/android.support.test.runner.AndroidJUnitRunner |
| 50 | */ |
| 51 | @SmallTest |
| 52 | @RunWith(AndroidJUnit4.class) |
| 53 | public class KernelUidCpuFreqTimeReaderTest { |
| 54 | @Mock private BufferedReader mBufferedReader; |
| 55 | @Mock private KernelUidCpuFreqTimeReader.Callback mCallback; |
| 56 | |
| 57 | private KernelUidCpuFreqTimeReader mKernelUidCpuFreqTimeReader; |
| 58 | |
| 59 | @Before |
| 60 | public void setUp() { |
| 61 | MockitoAnnotations.initMocks(this); |
| 62 | mKernelUidCpuFreqTimeReader = new KernelUidCpuFreqTimeReader(); |
| 63 | } |
| 64 | |
| 65 | @Test |
| 66 | public void testReadDelta() throws Exception { |
| 67 | final long[] freqs = {1, 12, 123, 1234, 12345, 123456}; |
| 68 | final int[] uids = {1, 22, 333, 4444, 5555}; |
| 69 | final long[][] times = new long[uids.length][freqs.length]; |
| 70 | for (int i = 0; i < uids.length; ++i) { |
| 71 | for (int j = 0; j < freqs.length; ++j) { |
| 72 | times[i][j] = uids[i] * freqs[j] * 10; |
| 73 | } |
| 74 | } |
Sudheer Shanka | 9b735c5 | 2017-05-09 18:26:18 -0700 | [diff] [blame] | 75 | when(mBufferedReader.readLine()) |
Sudheer Shanka | 59f5c00 | 2017-05-15 10:57:15 -0700 | [diff] [blame] | 76 | .thenReturn(getFreqsLine(freqs), getUidTimesLines(uids, times)); |
Sudheer Shanka | 9b735c5 | 2017-05-09 18:26:18 -0700 | [diff] [blame] | 77 | mKernelUidCpuFreqTimeReader.readDelta(mBufferedReader, mCallback); |
| 78 | verify(mCallback).onCpuFreqs(freqs); |
| 79 | for (int i = 0; i < uids.length; ++i) { |
| 80 | verify(mCallback).onUidCpuFreqTime(uids[i], times[i]); |
| 81 | } |
| 82 | verifyNoMoreInteractions(mCallback); |
Sudheer Shanka | 59f5c00 | 2017-05-15 10:57:15 -0700 | [diff] [blame] | 83 | |
| 84 | // Verify that a second call will only return deltas. |
| 85 | Mockito.reset(mCallback, mBufferedReader); |
| 86 | final long[][] newTimes1 = new long[uids.length][freqs.length]; |
| 87 | for (int i = 0; i < uids.length; ++i) { |
| 88 | for (int j = 0; j < freqs.length; ++j) { |
| 89 | newTimes1[i][j] = (times[i][j] + uids[i] + freqs[j]) * 10; |
| 90 | } |
| 91 | } |
| 92 | when(mBufferedReader.readLine()) |
| 93 | .thenReturn(getFreqsLine(freqs), getUidTimesLines(uids, newTimes1)); |
| 94 | mKernelUidCpuFreqTimeReader.readDelta(mBufferedReader, mCallback); |
| 95 | verify(mCallback).onCpuFreqs(freqs); |
| 96 | for (int i = 0; i < uids.length; ++i) { |
| 97 | verify(mCallback).onUidCpuFreqTime(uids[i], subtract(newTimes1[i], times[i])); |
| 98 | } |
| 99 | verifyNoMoreInteractions(mCallback); |
| 100 | |
Sudheer Shanka | 0085752 | 2017-07-06 18:28:14 -0700 | [diff] [blame] | 101 | // Verify that there won't be a callback if the proc file values didn't change. |
| 102 | Mockito.reset(mCallback, mBufferedReader); |
| 103 | when(mBufferedReader.readLine()) |
| 104 | .thenReturn(getFreqsLine(freqs), getUidTimesLines(uids, newTimes1)); |
| 105 | mKernelUidCpuFreqTimeReader.readDelta(mBufferedReader, mCallback); |
| 106 | verify(mCallback).onCpuFreqs(freqs); |
| 107 | verifyNoMoreInteractions(mCallback); |
| 108 | |
Sudheer Shanka | 59f5c00 | 2017-05-15 10:57:15 -0700 | [diff] [blame] | 109 | // Verify that calling with a null callback doesn't result in any crashes |
| 110 | Mockito.reset(mCallback, mBufferedReader); |
| 111 | final long[][] newTimes2 = new long[uids.length][freqs.length]; |
| 112 | for (int i = 0; i < uids.length; ++i) { |
| 113 | for (int j = 0; j < freqs.length; ++j) { |
| 114 | newTimes2[i][j] = (newTimes1[i][j] + uids[i] * freqs[j]) * 10; |
| 115 | } |
| 116 | } |
| 117 | when(mBufferedReader.readLine()) |
| 118 | .thenReturn(getFreqsLine(freqs), getUidTimesLines(uids, newTimes2)); |
| 119 | mKernelUidCpuFreqTimeReader.readDelta(mBufferedReader, null); |
| 120 | verifyZeroInteractions(mCallback); |
| 121 | |
| 122 | // Verify that the readDelta call will only return deltas when |
| 123 | // the previous call had null callback. |
| 124 | Mockito.reset(mCallback, mBufferedReader); |
| 125 | final long[][] newTimes3 = new long[uids.length][freqs.length]; |
| 126 | for (int i = 0; i < uids.length; ++i) { |
| 127 | for (int j = 0; j < freqs.length; ++j) { |
| 128 | newTimes3[i][j] = (newTimes2[i][j] * (uids[i] + freqs[j])) * 10; |
| 129 | } |
| 130 | } |
| 131 | when(mBufferedReader.readLine()) |
| 132 | .thenReturn(getFreqsLine(freqs), getUidTimesLines(uids, newTimes3)); |
| 133 | mKernelUidCpuFreqTimeReader.readDelta(mBufferedReader, mCallback); |
| 134 | verify(mCallback).onCpuFreqs(freqs); |
| 135 | for (int i = 0; i < uids.length; ++i) { |
| 136 | verify(mCallback).onUidCpuFreqTime(uids[i], subtract(newTimes3[i], newTimes2[i])); |
| 137 | } |
| 138 | verifyNoMoreInteractions(mCallback); |
| 139 | } |
| 140 | |
Sudheer Shanka | 0085752 | 2017-07-06 18:28:14 -0700 | [diff] [blame] | 141 | @Test |
| 142 | public void testReadDelta_malformedData() throws Exception { |
| 143 | final long[] freqs = {1, 12, 123, 1234, 12345, 123456}; |
| 144 | final int[] uids = {1, 22, 333, 4444, 5555}; |
| 145 | final long[][] times = new long[uids.length][freqs.length]; |
| 146 | for (int i = 0; i < uids.length; ++i) { |
| 147 | for (int j = 0; j < freqs.length; ++j) { |
| 148 | times[i][j] = uids[i] * freqs[j] * 10; |
| 149 | } |
| 150 | } |
| 151 | when(mBufferedReader.readLine()) |
| 152 | .thenReturn(getFreqsLine(freqs), getUidTimesLines(uids, times)); |
| 153 | mKernelUidCpuFreqTimeReader.readDelta(mBufferedReader, mCallback); |
| 154 | verify(mCallback).onCpuFreqs(freqs); |
| 155 | for (int i = 0; i < uids.length; ++i) { |
| 156 | verify(mCallback).onUidCpuFreqTime(uids[i], times[i]); |
| 157 | } |
| 158 | verifyNoMoreInteractions(mCallback); |
| 159 | |
| 160 | // Verify that there is no callback if any value in the proc file is -ve. |
| 161 | Mockito.reset(mCallback, mBufferedReader); |
| 162 | final long[][] newTimes1 = new long[uids.length][freqs.length]; |
| 163 | for (int i = 0; i < uids.length; ++i) { |
| 164 | for (int j = 0; j < freqs.length; ++j) { |
| 165 | newTimes1[i][j] = (times[i][j] + uids[i] + freqs[j]) * 10; |
| 166 | } |
| 167 | } |
| 168 | newTimes1[uids.length - 1][freqs.length - 1] *= -1; |
| 169 | when(mBufferedReader.readLine()) |
| 170 | .thenReturn(getFreqsLine(freqs), getUidTimesLines(uids, newTimes1)); |
| 171 | mKernelUidCpuFreqTimeReader.readDelta(mBufferedReader, mCallback); |
| 172 | verify(mCallback).onCpuFreqs(freqs); |
| 173 | for (int i = 0; i < uids.length; ++i) { |
| 174 | if (i == uids.length - 1) { |
| 175 | continue; |
| 176 | } |
| 177 | verify(mCallback).onUidCpuFreqTime(uids[i], subtract(newTimes1[i], times[i])); |
| 178 | } |
| 179 | verifyNoMoreInteractions(mCallback); |
| 180 | |
| 181 | // Verify that the internal state was not modified when the proc file had -ve value. |
| 182 | Mockito.reset(mCallback, mBufferedReader); |
| 183 | for (int i = 0; i < freqs.length; ++i) { |
| 184 | newTimes1[uids.length - 1][i] = times[uids.length - 1][i]; |
| 185 | } |
| 186 | when(mBufferedReader.readLine()) |
| 187 | .thenReturn(getFreqsLine(freqs), getUidTimesLines(uids, newTimes1)); |
| 188 | mKernelUidCpuFreqTimeReader.readDelta(mBufferedReader, mCallback); |
| 189 | verify(mCallback).onCpuFreqs(freqs); |
| 190 | verifyNoMoreInteractions(mCallback); |
| 191 | |
| 192 | // Verify that there is no callback if the values in the proc file are decreased. |
| 193 | Mockito.reset(mCallback, mBufferedReader); |
| 194 | final long[][] newTimes2 = new long[uids.length][freqs.length]; |
| 195 | for (int i = 0; i < uids.length; ++i) { |
| 196 | for (int j = 0; j < freqs.length; ++j) { |
| 197 | newTimes2[i][j] = (newTimes1[i][j] + uids[i] * freqs[j]) * 10; |
| 198 | } |
| 199 | } |
| 200 | newTimes2[uids.length - 1][freqs.length - 1] = |
| 201 | newTimes1[uids.length - 1][freqs.length - 1] - 222; |
| 202 | when(mBufferedReader.readLine()) |
| 203 | .thenReturn(getFreqsLine(freqs), getUidTimesLines(uids, newTimes2)); |
| 204 | mKernelUidCpuFreqTimeReader.readDelta(mBufferedReader, mCallback); |
| 205 | verify(mCallback).onCpuFreqs(freqs); |
| 206 | for (int i = 0; i < uids.length; ++i) { |
| 207 | if (i == uids.length - 1) { |
| 208 | continue; |
| 209 | } |
| 210 | verify(mCallback).onUidCpuFreqTime(uids[i], subtract(newTimes2[i], newTimes1[i])); |
| 211 | } |
| 212 | verifyNoMoreInteractions(mCallback); |
| 213 | |
| 214 | // Verify that the internal state was not modified when the proc file had decreasing values. |
| 215 | Mockito.reset(mCallback, mBufferedReader); |
| 216 | for (int i = 0; i < freqs.length; ++i) { |
| 217 | newTimes2[uids.length - 1][i] = newTimes1[uids.length - 1][i]; |
| 218 | } |
| 219 | when(mBufferedReader.readLine()) |
| 220 | .thenReturn(getFreqsLine(freqs), getUidTimesLines(uids, newTimes2)); |
| 221 | mKernelUidCpuFreqTimeReader.readDelta(mBufferedReader, mCallback); |
| 222 | verify(mCallback).onCpuFreqs(freqs); |
| 223 | verifyNoMoreInteractions(mCallback); |
| 224 | } |
| 225 | |
Sudheer Shanka | 59f5c00 | 2017-05-15 10:57:15 -0700 | [diff] [blame] | 226 | private long[] subtract(long[] a1, long[] a2) { |
| 227 | long[] val = new long[a1.length]; |
| 228 | for (int i = 0; i < val.length; ++i) { |
| 229 | val[i] = a1[i] - a2[i]; |
| 230 | } |
| 231 | return val; |
Sudheer Shanka | 9b735c5 | 2017-05-09 18:26:18 -0700 | [diff] [blame] | 232 | } |
| 233 | |
| 234 | private String getFreqsLine(long[] freqs) { |
| 235 | final StringBuilder sb = new StringBuilder(); |
| 236 | sb.append("uid:"); |
| 237 | for (int i = 0; i < freqs.length; ++i) { |
| 238 | sb.append(" " + freqs[i]); |
| 239 | } |
| 240 | return sb.toString(); |
| 241 | } |
| 242 | |
| 243 | private String[] getUidTimesLines(int[] uids, long[][] times) { |
Sudheer Shanka | 59f5c00 | 2017-05-15 10:57:15 -0700 | [diff] [blame] | 244 | final String[] lines = new String[uids.length + 1]; |
Sudheer Shanka | 9b735c5 | 2017-05-09 18:26:18 -0700 | [diff] [blame] | 245 | final StringBuilder sb = new StringBuilder(); |
| 246 | for (int i = 0; i < uids.length; ++i) { |
| 247 | sb.setLength(0); |
| 248 | sb.append(uids[i] + ":"); |
| 249 | for (int j = 0; j < times[i].length; ++j) { |
| 250 | sb.append(" " + times[i][j] / 10); |
| 251 | } |
| 252 | lines[i] = sb.toString(); |
| 253 | } |
Sudheer Shanka | 59f5c00 | 2017-05-15 10:57:15 -0700 | [diff] [blame] | 254 | lines[uids.length] = null; |
Sudheer Shanka | 9b735c5 | 2017-05-09 18:26:18 -0700 | [diff] [blame] | 255 | return lines; |
| 256 | } |
| 257 | } |