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      1 /*
      2  * Copyright (C) 2018 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.flicker.monitor;
     18 
     19 import static android.os.SystemClock.sleep;
     20 import static android.surfaceflinger.nano.Layerstrace.LayersTraceFileProto.MAGIC_NUMBER_H;
     21 import static android.surfaceflinger.nano.Layerstrace.LayersTraceFileProto.MAGIC_NUMBER_L;
     22 
     23 import static com.google.common.truth.Truth.assertThat;
     24 
     25 import android.surfaceflinger.nano.Layerstrace.LayersTraceFileProto;
     26 
     27 import com.google.common.io.Files;
     28 
     29 import org.junit.After;
     30 import org.junit.Before;
     31 import org.junit.Test;
     32 
     33 import java.io.File;
     34 
     35 /**
     36  * Contains {@link LayersTraceMonitor} tests.
     37  * To run this test: {@code atest FlickerLibTest:LayersTraceMonitorTest}
     38  */
     39 public class LayersTraceMonitorTest {
     40     private LayersTraceMonitor mLayersTraceMonitor;
     41 
     42     @Before
     43     public void setup() {
     44         mLayersTraceMonitor = new LayersTraceMonitor();
     45     }
     46 
     47     @After
     48     public void teardown() {
     49         mLayersTraceMonitor.stop();
     50         mLayersTraceMonitor.getOutputTraceFilePath("captureLayersTrace", 0).toFile().delete();
     51     }
     52 
     53     @Test
     54     public void canStartLayersTrace() throws Exception {
     55         mLayersTraceMonitor.start();
     56         assertThat(mLayersTraceMonitor.isEnabled()).isTrue();
     57     }
     58 
     59     @Test
     60     public void canStopLayersTrace() throws Exception {
     61         mLayersTraceMonitor.start();
     62         assertThat(mLayersTraceMonitor.isEnabled()).isTrue();
     63         mLayersTraceMonitor.stop();
     64         assertThat(mLayersTraceMonitor.isEnabled()).isFalse();
     65     }
     66 
     67     @Test
     68     public void captureLayersTrace() throws Exception {
     69         mLayersTraceMonitor.start();
     70         mLayersTraceMonitor.stop();
     71         File testFile = mLayersTraceMonitor.saveTraceFile("captureLayersTrace", 0).toFile();
     72         assertThat(testFile.exists()).isTrue();
     73         byte[] trace = Files.toByteArray(testFile);
     74         assertThat(trace.length).isGreaterThan(0);
     75         LayersTraceFileProto mLayerTraceFileProto = LayersTraceFileProto.parseFrom(trace);
     76         assertThat(mLayerTraceFileProto.magicNumber).isEqualTo(
     77                 (long) MAGIC_NUMBER_H << 32 | MAGIC_NUMBER_L);
     78     }
     79 }
     80