1 // Protocol Buffers - Google's data interchange format 2 // Copyright 2008 Google Inc. All rights reserved. 3 // 4 // Use of this source code is governed by a BSD-style 5 // license that can be found in the LICENSE file or at 6 // https://developers.google.com/open-source/licenses/bsd 7 8 package com.google.protobuf; 9 10 import static com.google.common.truth.Truth.assertThat; 11 12 import java.io.ByteArrayInputStream; 13 import java.io.IOException; 14 import java.io.InputStream; 15 import org.junit.Test; 16 import org.junit.runner.RunWith; 17 import org.junit.runners.JUnit4; 18 19 @RunWith(JUnit4.class) 20 public final class UnknownFieldSetPerformanceTest { 21 generateBytes(int length)22 private static byte[] generateBytes(int length) { 23 assertThat(length % 4).isEqualTo(0); 24 byte[] input = new byte[length]; 25 for (int i = 0; i < length; i += 4) { 26 input[i] = (byte) 0x08; // field 1, wiretype 0 27 input[i + 1] = (byte) 0x08; // field 1, payload 8 28 input[i + 2] = (byte) 0x20; // field 4, wiretype 0 29 input[i + 3] = (byte) 0x20; // field 4, payload 32 30 } 31 return input; 32 } 33 34 @Test 35 // This is a performance test. Failure here is a timeout. testAlternatingFieldNumbers()36 public void testAlternatingFieldNumbers() throws IOException { 37 byte[] input = generateBytes(800000); 38 InputStream in = new ByteArrayInputStream(input); 39 UnknownFieldSet.Builder builder = UnknownFieldSet.newBuilder(); 40 CodedInputStream codedInput = CodedInputStream.newInstance(in); 41 builder.mergeFrom(codedInput); 42 } 43 44 @Test 45 // This is a performance test. Failure here is a timeout. testAddField()46 public void testAddField() { 47 UnknownFieldSet.Builder builder = UnknownFieldSet.newBuilder(); 48 for (int i = 1; i <= 100000; i++) { 49 UnknownFieldSet.Field field = UnknownFieldSet.Field.newBuilder().addFixed32(i).build(); 50 builder.addField(i, field); 51 } 52 UnknownFieldSet fieldSet = builder.build(); 53 assertThat(fieldSet.getField(100000).getFixed32List().get(0)).isEqualTo(100000); 54 } 55 } 56