| /* |
| * 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.server.wm; |
| |
| import static androidx.test.platform.app.InstrumentationRegistry.getInstrumentation; |
| |
| import static com.android.server.wm.WindowManagerTraceFileProto.MAGIC_NUMBER; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import android.content.Context; |
| import android.platform.test.annotations.Presubmit; |
| import android.util.proto.ProtoOutputStream; |
| |
| import androidx.test.filters.SmallTest; |
| |
| import com.android.internal.util.Preconditions; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import java.io.File; |
| |
| |
| /** |
| * Test class for {@link WindowTraceBuffer}. |
| * |
| * Build/Install/Run: |
| * atest WmTests:WindowTraceBufferTest |
| */ |
| @SmallTest |
| @Presubmit |
| public class WindowTraceBufferTest { |
| private File mFile; |
| private WindowTraceBuffer mBuffer; |
| |
| @Before |
| public void setUp() throws Exception { |
| final Context testContext = getInstrumentation().getContext(); |
| mFile = testContext.getFileStreamPath("tracing_test.dat"); |
| mFile.delete(); |
| |
| mBuffer = new WindowTraceBuffer(10); |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| mFile.delete(); |
| } |
| |
| @Test |
| public void test_addItem() { |
| ProtoOutputStream toWrite = getDummy(1); |
| final int objectSize = toWrite.getRawSize(); |
| mBuffer.setCapacity(objectSize); |
| mBuffer.resetBuffer(); |
| |
| Preconditions.checkArgument(mBuffer.size() == 0); |
| |
| mBuffer.add(toWrite); |
| |
| assertEquals("Item was not added to the buffer", 1, mBuffer.size()); |
| assertEquals("Total buffer getSize differs from inserted object", |
| mBuffer.getBufferSize(), objectSize); |
| assertEquals("Available buffer space does not match used one", 0, |
| mBuffer.getAvailableSpace()); |
| } |
| |
| @Test |
| public void test_addItemMustOverwriteOne() { |
| ProtoOutputStream toWrite1 = getDummy(1); |
| ProtoOutputStream toWrite2 = getDummy(2); |
| ProtoOutputStream toWrite3 = getDummy(3); |
| final int objectSize = toWrite1.getRawSize(); |
| final int bufferCapacity = objectSize * 2 + 1; |
| mBuffer.setCapacity(bufferCapacity); |
| mBuffer.resetBuffer(); |
| |
| mBuffer.add(toWrite1); |
| byte[] toWrite1Bytes = toWrite1.getBytes(); |
| assertTrue("First element should be in the list", |
| mBuffer.contains(toWrite1Bytes)); |
| |
| mBuffer.add(toWrite2); |
| byte[] toWrite2Bytes = toWrite2.getBytes(); |
| assertTrue("First element should be in the list", |
| mBuffer.contains(toWrite1Bytes)); |
| assertTrue("Second element should be in the list", |
| mBuffer.contains(toWrite2Bytes)); |
| |
| mBuffer.add(toWrite3); |
| byte[] toWrite3Bytes = toWrite3.getBytes(); |
| assertTrue("First element should not be in the list", |
| !mBuffer.contains(toWrite1Bytes)); |
| assertTrue("Second element should be in the list", |
| mBuffer.contains(toWrite2Bytes)); |
| assertTrue("Third element should be in the list", |
| mBuffer.contains(toWrite3Bytes)); |
| assertEquals("Buffer should have 2 elements", 2, mBuffer.size()); |
| assertEquals(String.format("Buffer is full, used space should be %d", bufferCapacity), |
| mBuffer.getBufferSize(), bufferCapacity - 1); |
| assertEquals(" Buffer is full, available space should be 0", 1, |
| mBuffer.getAvailableSpace()); |
| } |
| |
| @Test |
| public void test_addItemMustOverwriteMultiple() { |
| ProtoOutputStream toWriteSmall1 = getDummy(1); |
| ProtoOutputStream toWriteSmall2 = getDummy(2); |
| final int objectSize = toWriteSmall1.getRawSize(); |
| final int bufferCapacity = objectSize * 2; |
| mBuffer.setCapacity(bufferCapacity); |
| mBuffer.resetBuffer(); |
| |
| ProtoOutputStream toWriteBig = new ProtoOutputStream(); |
| toWriteBig.write(MAGIC_NUMBER, 1); |
| toWriteBig.write(MAGIC_NUMBER, 2); |
| |
| mBuffer.add(toWriteSmall1); |
| byte[] toWriteSmall1Bytes = toWriteSmall1.getBytes(); |
| assertTrue("First element should be in the list", |
| mBuffer.contains(toWriteSmall1Bytes)); |
| |
| mBuffer.add(toWriteSmall2); |
| byte[] toWriteSmall2Bytes = toWriteSmall2.getBytes(); |
| assertTrue("First element should be in the list", |
| mBuffer.contains(toWriteSmall1Bytes)); |
| assertTrue("Second element should be in the list", |
| mBuffer.contains(toWriteSmall2Bytes)); |
| |
| mBuffer.add(toWriteBig); |
| byte[] toWriteBigBytes = toWriteBig.getBytes(); |
| assertTrue("Third element should overwrite all others", |
| !mBuffer.contains(toWriteSmall1Bytes)); |
| assertTrue("Third element should overwrite all others", |
| !mBuffer.contains(toWriteSmall2Bytes)); |
| assertTrue("Third element should overwrite all others", |
| mBuffer.contains(toWriteBigBytes)); |
| |
| assertEquals(" Buffer should have only 1 big element", 1, mBuffer.size()); |
| assertEquals(String.format(" Buffer is full, used space should be %d", bufferCapacity), |
| mBuffer.getBufferSize(), bufferCapacity); |
| assertEquals(" Buffer is full, available space should be 0", 0, |
| mBuffer.getAvailableSpace()); |
| } |
| |
| @Test |
| public void test_startResetsBuffer() { |
| ProtoOutputStream toWrite = getDummy(1); |
| mBuffer.resetBuffer(); |
| Preconditions.checkArgument(mBuffer.size() == 0); |
| |
| mBuffer.add(toWrite); |
| assertEquals("Item was not added to the buffer", 1, mBuffer.size()); |
| mBuffer.resetBuffer(); |
| assertEquals("Buffer should be empty after reset", 0, mBuffer.size()); |
| assertEquals("Buffer size should be 0 after reset", 0, mBuffer.getBufferSize()); |
| } |
| |
| private ProtoOutputStream getDummy(int value) { |
| ProtoOutputStream toWrite = new ProtoOutputStream(); |
| toWrite.write(MAGIC_NUMBER, value); |
| toWrite.flush(); |
| |
| return toWrite; |
| } |
| |
| } |