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 android.uirendering.cts.testinfrastructure;
18 
19 import android.os.Trace;
20 
21 import org.junit.rules.TestRule;
22 import org.junit.runner.Description;
23 import org.junit.runners.model.Statement;
24 
25 public class Tracer implements TestRule {
26     private String mName;
27 
28     @Override
apply(Statement base, Description description)29     public Statement apply(Statement base, Description description) {
30         return new Statement() {
31             @Override
32             public void evaluate() throws Throwable {
33                 mName = description.getMethodName();
34                 Trace.beginSection(mName);
35                 try {
36                     base.evaluate();
37                 } finally {
38                     Trace.endSection();
39                 }
40             }
41         };
42     }
43 
44     public String getMethodName() {
45         return mName;
46     }
47 }
48