Adrian Roos | 111aff9 | 2017-09-27 18:11:46 +0200 | [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.server.wm; |
| 18 | |
| 19 | import static org.junit.Assert.assertArrayEquals; |
| 20 | import static org.junit.Assert.assertEquals; |
| 21 | import static org.junit.Assert.assertFalse; |
| 22 | import static org.junit.Assert.assertTrue; |
| 23 | import static org.mockito.ArgumentMatchers.any; |
| 24 | import static org.mockito.ArgumentMatchers.eq; |
| 25 | import static org.mockito.Mockito.doAnswer; |
| 26 | import static org.mockito.Mockito.mock; |
| 27 | import static org.mockito.Mockito.verify; |
| 28 | import static org.mockito.Mockito.verifyZeroInteractions; |
| 29 | |
| 30 | import android.content.Context; |
| 31 | import android.platform.test.annotations.Presubmit; |
| 32 | import android.support.test.InstrumentationRegistry; |
| 33 | import android.support.test.filters.SmallTest; |
chaviw | 4f0f348 | 2018-03-01 15:47:56 -0800 | [diff] [blame] | 34 | import android.support.test.filters.FlakyTest; |
Adrian Roos | 111aff9 | 2017-09-27 18:11:46 +0200 | [diff] [blame] | 35 | import android.support.test.runner.AndroidJUnit4; |
| 36 | import android.util.proto.ProtoOutputStream; |
| 37 | |
| 38 | import com.android.internal.util.Preconditions; |
Yi Jin | 6c6e9ca | 2018-03-20 16:53:35 -0700 | [diff] [blame] | 39 | import com.android.server.wm.WindowManagerTraceProto; |
Adrian Roos | 111aff9 | 2017-09-27 18:11:46 +0200 | [diff] [blame] | 40 | |
| 41 | import org.junit.After; |
| 42 | import org.junit.Before; |
| 43 | import org.junit.Ignore; |
| 44 | import org.junit.Test; |
| 45 | import org.junit.runner.RunWith; |
| 46 | |
| 47 | import java.io.File; |
| 48 | import java.io.FileInputStream; |
| 49 | import java.io.InputStream; |
| 50 | import java.io.PrintWriter; |
| 51 | import java.nio.charset.StandardCharsets; |
| 52 | |
| 53 | /** |
| 54 | * Test class for {@link WindowTracing}. |
| 55 | * |
| 56 | * Build/Install/Run: |
| 57 | * bit FrameworksServicesTests:com.android.server.wm.WindowTracingTest |
| 58 | */ |
| 59 | @SmallTest |
chaviw | 36d0a34 | 2018-03-01 17:29:21 -0800 | [diff] [blame] | 60 | @FlakyTest(bugId = 74078662) |
Adrian Roos | 111aff9 | 2017-09-27 18:11:46 +0200 | [diff] [blame] | 61 | @Presubmit |
| 62 | @RunWith(AndroidJUnit4.class) |
| 63 | public class WindowTracingTest extends WindowTestsBase { |
| 64 | |
| 65 | private static final byte[] MAGIC_HEADER = new byte[] { |
| 66 | 0x9, 0x57, 0x49, 0x4e, 0x54, 0x52, 0x41, 0x43, 0x45, |
| 67 | }; |
| 68 | |
| 69 | private Context mTestContext; |
| 70 | private WindowTracing mWindowTracing; |
| 71 | private WindowManagerService mWmMock; |
| 72 | private File mFile; |
| 73 | |
| 74 | @Override |
| 75 | @Before |
| 76 | public void setUp() throws Exception { |
| 77 | super.setUp(); |
| 78 | |
| 79 | mWmMock = mock(WindowManagerService.class); |
| 80 | |
| 81 | mTestContext = InstrumentationRegistry.getContext(); |
| 82 | |
| 83 | mFile = mTestContext.getFileStreamPath("tracing_test.dat"); |
| 84 | mFile.delete(); |
| 85 | |
| 86 | mWindowTracing = new WindowTracing(mFile); |
| 87 | } |
| 88 | |
| 89 | @Test |
| 90 | public void isEnabled_returnsFalseByDefault() throws Exception { |
| 91 | assertFalse(mWindowTracing.isEnabled()); |
| 92 | } |
| 93 | |
| 94 | @Test |
| 95 | public void isEnabled_returnsTrueAfterStart() throws Exception { |
| 96 | mWindowTracing.startTrace(mock(PrintWriter.class)); |
| 97 | assertTrue(mWindowTracing.isEnabled()); |
| 98 | } |
| 99 | |
| 100 | @Test |
| 101 | public void isEnabled_returnsFalseAfterStop() throws Exception { |
| 102 | mWindowTracing.startTrace(mock(PrintWriter.class)); |
| 103 | mWindowTracing.stopTrace(mock(PrintWriter.class)); |
| 104 | assertFalse(mWindowTracing.isEnabled()); |
| 105 | } |
| 106 | |
| 107 | @Test |
| 108 | public void trace_discared_whenNotTracing() throws Exception { |
| 109 | mWindowTracing.traceStateLocked("where", mWmMock); |
| 110 | verifyZeroInteractions(mWmMock); |
| 111 | } |
| 112 | |
| 113 | @Test |
| 114 | public void trace_dumpsWindowManagerState_whenTracing() throws Exception { |
| 115 | mWindowTracing.startTrace(mock(PrintWriter.class)); |
| 116 | mWindowTracing.traceStateLocked("where", mWmMock); |
| 117 | |
| 118 | verify(mWmMock).writeToProtoLocked(any(), eq(true)); |
| 119 | } |
| 120 | |
| 121 | @Test |
| 122 | public void traceFile_startsWithMagicHeader() throws Exception { |
| 123 | mWindowTracing.startTrace(mock(PrintWriter.class)); |
| 124 | mWindowTracing.stopTrace(mock(PrintWriter.class)); |
| 125 | |
| 126 | byte[] header = new byte[MAGIC_HEADER.length]; |
| 127 | try (InputStream is = new FileInputStream(mFile)) { |
| 128 | assertEquals(MAGIC_HEADER.length, is.read(header)); |
| 129 | assertArrayEquals(MAGIC_HEADER, header); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | @Test |
| 134 | @Ignore("Figure out why this test is crashing when setting up mWmMock.") |
| 135 | public void tracing_endsUpInFile() throws Exception { |
| 136 | mWindowTracing.startTrace(mock(PrintWriter.class)); |
| 137 | |
| 138 | doAnswer((inv) -> { |
| 139 | inv.<ProtoOutputStream>getArgument(0).write( |
| 140 | WindowManagerTraceProto.WHERE, "TEST_WM_PROTO"); |
| 141 | return null; |
| 142 | }).when(mWmMock).writeToProtoLocked(any(), any()); |
| 143 | mWindowTracing.traceStateLocked("TEST_WHERE", mWmMock); |
| 144 | |
| 145 | mWindowTracing.stopTrace(mock(PrintWriter.class)); |
| 146 | |
| 147 | byte[] file = new byte[1000]; |
| 148 | int fileLength; |
| 149 | try (InputStream is = new FileInputStream(mFile)) { |
| 150 | fileLength = is.read(file); |
| 151 | assertTrue(containsBytes(file, fileLength, |
| 152 | "TEST_WHERE".getBytes(StandardCharsets.UTF_8))); |
| 153 | assertTrue(containsBytes(file, fileLength, |
| 154 | "TEST_WM_PROTO".getBytes(StandardCharsets.UTF_8))); |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | @Override |
| 159 | @After |
| 160 | public void tearDown() throws Exception { |
| 161 | super.tearDown(); |
| 162 | |
| 163 | mFile.delete(); |
| 164 | } |
| 165 | |
| 166 | /** Return true if {@code needle} appears anywhere in {@code haystack[0..length]} */ |
| 167 | boolean containsBytes(byte[] haystack, int haystackLenght, byte[] needle) { |
| 168 | Preconditions.checkArgument(haystackLenght > 0); |
| 169 | Preconditions.checkArgument(needle.length > 0); |
| 170 | |
| 171 | outer: for (int i = 0; i <= haystackLenght - needle.length; i++) { |
| 172 | for (int j = 0; j < needle.length; j++) { |
| 173 | if (haystack[i+j] != needle[j]) { |
| 174 | continue outer; |
| 175 | } |
| 176 | } |
| 177 | return true; |
| 178 | } |
| 179 | return false; |
| 180 | } |
| 181 | |
| 182 | @Test |
| 183 | public void test_containsBytes() { |
| 184 | byte[] haystack = "hello_world".getBytes(StandardCharsets.UTF_8); |
| 185 | assertTrue(containsBytes(haystack, haystack.length, |
| 186 | "hello".getBytes(StandardCharsets.UTF_8))); |
| 187 | assertTrue(containsBytes(haystack, haystack.length, |
| 188 | "world".getBytes(StandardCharsets.UTF_8))); |
| 189 | assertFalse(containsBytes(haystack, 6, |
| 190 | "world".getBytes(StandardCharsets.UTF_8))); |
| 191 | assertFalse(containsBytes(haystack, haystack.length, |
| 192 | "world_".getBytes(StandardCharsets.UTF_8))); |
| 193 | assertFalse(containsBytes(haystack, haystack.length, |
| 194 | "absent".getBytes(StandardCharsets.UTF_8))); |
| 195 | } |
| 196 | } |