#region Copyright notice and license
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// http://github.com/jskeet/dotnet-protobufs/
// Original C++/Java/Python code:
// http://code.google.com/p/protobuf/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion
using System;
using System.Collections.Generic;
using System.IO;
using Google.ProtocolBuffers.TestProtos;
using Microsoft.VisualStudio.TestTools.UnitTesting;
namespace Google.ProtocolBuffers
{
[TestClass]
public class CodedOutputStreamTest
{
///
/// Writes the given value using WriteRawVarint32() and WriteRawVarint64() and
/// checks that the result matches the given bytes
///
private static void AssertWriteVarint(byte[] data, ulong value)
{
// Only do 32-bit write if the value fits in 32 bits.
if ((value >> 32) == 0)
{
MemoryStream rawOutput = new MemoryStream();
CodedOutputStream output = CodedOutputStream.CreateInstance(rawOutput);
output.WriteRawVarint32((uint) value);
output.Flush();
TestUtil.AssertBytesEqual(data, rawOutput.ToArray());
// Also try computing size.
Assert.AreEqual(data.Length, CodedOutputStream.ComputeRawVarint32Size((uint) value));
}
{
MemoryStream rawOutput = new MemoryStream();
CodedOutputStream output = CodedOutputStream.CreateInstance(rawOutput);
output.WriteRawVarint64(value);
output.Flush();
TestUtil.AssertBytesEqual(data, rawOutput.ToArray());
// Also try computing size.
Assert.AreEqual(data.Length, CodedOutputStream.ComputeRawVarint64Size(value));
}
// Try different buffer sizes.
for (int bufferSize = 1; bufferSize <= 16; bufferSize *= 2)
{
// Only do 32-bit write if the value fits in 32 bits.
if ((value >> 32) == 0)
{
MemoryStream rawOutput = new MemoryStream();
CodedOutputStream output =
CodedOutputStream.CreateInstance(rawOutput, bufferSize);
output.WriteRawVarint32((uint) value);
output.Flush();
TestUtil.AssertBytesEqual(data, rawOutput.ToArray());
}
{
MemoryStream rawOutput = new MemoryStream();
CodedOutputStream output = CodedOutputStream.CreateInstance(rawOutput, bufferSize);
output.WriteRawVarint64(value);
output.Flush();
TestUtil.AssertBytesEqual(data, rawOutput.ToArray());
}
}
}
///
/// Tests WriteRawVarint32() and WriteRawVarint64()
///
[TestMethod]
public void WriteVarint()
{
AssertWriteVarint(new byte[] {0x00}, 0);
AssertWriteVarint(new byte[] {0x01}, 1);
AssertWriteVarint(new byte[] {0x7f}, 127);
// 14882
AssertWriteVarint(new byte[] {0xa2, 0x74}, (0x22 << 0) | (0x74 << 7));
// 2961488830
AssertWriteVarint(new byte[] {0xbe, 0xf7, 0x92, 0x84, 0x0b},
(0x3e << 0) | (0x77 << 7) | (0x12 << 14) | (0x04 << 21) |
(0x0bL << 28));
// 64-bit
// 7256456126
AssertWriteVarint(new byte[] {0xbe, 0xf7, 0x92, 0x84, 0x1b},
(0x3e << 0) | (0x77 << 7) | (0x12 << 14) | (0x04 << 21) |
(0x1bL << 28));
// 41256202580718336
AssertWriteVarint(
new byte[] {0x80, 0xe6, 0xeb, 0x9c, 0xc3, 0xc9, 0xa4, 0x49},
(0x00 << 0) | (0x66 << 7) | (0x6b << 14) | (0x1c << 21) |
(0x43UL << 28) | (0x49L << 35) | (0x24UL << 42) | (0x49UL << 49));
// 11964378330978735131
AssertWriteVarint(
new byte[] {0x9b, 0xa8, 0xf9, 0xc2, 0xbb, 0xd6, 0x80, 0x85, 0xa6, 0x01},
unchecked((ulong)
((0x1b << 0) | (0x28 << 7) | (0x79 << 14) | (0x42 << 21) |
(0x3bL << 28) | (0x56L << 35) | (0x00L << 42) |
(0x05L << 49) | (0x26L << 56) | (0x01L << 63))));
}
///
/// Parses the given bytes using WriteRawLittleEndian32() and checks
/// that the result matches the given value.
///
private static void AssertWriteLittleEndian32(byte[] data, uint value)
{
MemoryStream rawOutput = new MemoryStream();
CodedOutputStream output = CodedOutputStream.CreateInstance(rawOutput);
output.WriteRawLittleEndian32(value);
output.Flush();
TestUtil.AssertBytesEqual(data, rawOutput.ToArray());
// Try different buffer sizes.
for (int bufferSize = 1; bufferSize <= 16; bufferSize *= 2)
{
rawOutput = new MemoryStream();
output = CodedOutputStream.CreateInstance(rawOutput, bufferSize);
output.WriteRawLittleEndian32(value);
output.Flush();
TestUtil.AssertBytesEqual(data, rawOutput.ToArray());
}
}
///
/// Parses the given bytes using WriteRawLittleEndian64() and checks
/// that the result matches the given value.
///
private static void AssertWriteLittleEndian64(byte[] data, ulong value)
{
MemoryStream rawOutput = new MemoryStream();
CodedOutputStream output = CodedOutputStream.CreateInstance(rawOutput);
output.WriteRawLittleEndian64(value);
output.Flush();
TestUtil.AssertBytesEqual(data, rawOutput.ToArray());
// Try different block sizes.
for (int blockSize = 1; blockSize <= 16; blockSize *= 2)
{
rawOutput = new MemoryStream();
output = CodedOutputStream.CreateInstance(rawOutput, blockSize);
output.WriteRawLittleEndian64(value);
output.Flush();
TestUtil.AssertBytesEqual(data, rawOutput.ToArray());
}
}
///
/// Tests writeRawLittleEndian32() and writeRawLittleEndian64().
///
[TestMethod]
public void WriteLittleEndian()
{
AssertWriteLittleEndian32(new byte[] {0x78, 0x56, 0x34, 0x12}, 0x12345678);
AssertWriteLittleEndian32(new byte[] {0xf0, 0xde, 0xbc, 0x9a}, 0x9abcdef0);
AssertWriteLittleEndian64(
new byte[] {0xf0, 0xde, 0xbc, 0x9a, 0x78, 0x56, 0x34, 0x12},
0x123456789abcdef0L);
AssertWriteLittleEndian64(
new byte[] {0x78, 0x56, 0x34, 0x12, 0xf0, 0xde, 0xbc, 0x9a},
0x9abcdef012345678UL);
}
#if !SILVERLIGHT && !COMPACT_FRAMEWORK
[TestMethod]
public void WriteWholeMessage()
{
TestAllTypes message = TestUtil.GetAllSet();
byte[] rawBytes = message.ToByteArray();
TestUtil.AssertEqualBytes(TestUtil.GoldenMessage.ToByteArray(), rawBytes);
// Try different block sizes.
for (int blockSize = 1; blockSize < 256; blockSize *= 2)
{
MemoryStream rawOutput = new MemoryStream();
CodedOutputStream output =
CodedOutputStream.CreateInstance(rawOutput, blockSize);
message.WriteTo(output);
output.Flush();
TestUtil.AssertEqualBytes(rawBytes, rawOutput.ToArray());
}
}
///
/// Tests writing a whole message with every packed field type. Ensures the
/// wire format of packed fields is compatible with C++.
///
[TestMethod]
public void WriteWholePackedFieldsMessage()
{
TestPackedTypes message = TestUtil.GetPackedSet();
byte[] rawBytes = message.ToByteArray();
TestUtil.AssertEqualBytes(TestUtil.GetGoldenPackedFieldsMessage().ToByteArray(),
rawBytes);
}
#endif
[TestMethod]
public void EncodeZigZag32()
{
Assert.AreEqual(0u, CodedOutputStream.EncodeZigZag32(0));
Assert.AreEqual(1u, CodedOutputStream.EncodeZigZag32(-1));
Assert.AreEqual(2u, CodedOutputStream.EncodeZigZag32(1));
Assert.AreEqual(3u, CodedOutputStream.EncodeZigZag32(-2));
Assert.AreEqual(0x7FFFFFFEu, CodedOutputStream.EncodeZigZag32(0x3FFFFFFF));
Assert.AreEqual(0x7FFFFFFFu, CodedOutputStream.EncodeZigZag32(unchecked((int) 0xC0000000)));
Assert.AreEqual(0xFFFFFFFEu, CodedOutputStream.EncodeZigZag32(0x7FFFFFFF));
Assert.AreEqual(0xFFFFFFFFu, CodedOutputStream.EncodeZigZag32(unchecked((int) 0x80000000)));
}
[TestMethod]
public void EncodeZigZag64()
{
Assert.AreEqual(0u, CodedOutputStream.EncodeZigZag64(0));
Assert.AreEqual(1u, CodedOutputStream.EncodeZigZag64(-1));
Assert.AreEqual(2u, CodedOutputStream.EncodeZigZag64(1));
Assert.AreEqual(3u, CodedOutputStream.EncodeZigZag64(-2));
Assert.AreEqual(0x000000007FFFFFFEuL,
CodedOutputStream.EncodeZigZag64(unchecked((long) 0x000000003FFFFFFFUL)));
Assert.AreEqual(0x000000007FFFFFFFuL,
CodedOutputStream.EncodeZigZag64(unchecked((long) 0xFFFFFFFFC0000000UL)));
Assert.AreEqual(0x00000000FFFFFFFEuL,
CodedOutputStream.EncodeZigZag64(unchecked((long) 0x000000007FFFFFFFUL)));
Assert.AreEqual(0x00000000FFFFFFFFuL,
CodedOutputStream.EncodeZigZag64(unchecked((long) 0xFFFFFFFF80000000UL)));
Assert.AreEqual(0xFFFFFFFFFFFFFFFEL,
CodedOutputStream.EncodeZigZag64(unchecked((long) 0x7FFFFFFFFFFFFFFFUL)));
Assert.AreEqual(0xFFFFFFFFFFFFFFFFL,
CodedOutputStream.EncodeZigZag64(unchecked((long) 0x8000000000000000UL)));
}
[TestMethod]
public void RoundTripZigZag32()
{
// Some easier-to-verify round-trip tests. The inputs (other than 0, 1, -1)
// were chosen semi-randomly via keyboard bashing.
Assert.AreEqual(0, CodedInputStream.DecodeZigZag32(CodedOutputStream.EncodeZigZag32(0)));
Assert.AreEqual(1, CodedInputStream.DecodeZigZag32(CodedOutputStream.EncodeZigZag32(1)));
Assert.AreEqual(-1, CodedInputStream.DecodeZigZag32(CodedOutputStream.EncodeZigZag32(-1)));
Assert.AreEqual(14927, CodedInputStream.DecodeZigZag32(CodedOutputStream.EncodeZigZag32(14927)));
Assert.AreEqual(-3612, CodedInputStream.DecodeZigZag32(CodedOutputStream.EncodeZigZag32(-3612)));
}
[TestMethod]
public void RoundTripZigZag64()
{
Assert.AreEqual(0, CodedInputStream.DecodeZigZag64(CodedOutputStream.EncodeZigZag64(0)));
Assert.AreEqual(1, CodedInputStream.DecodeZigZag64(CodedOutputStream.EncodeZigZag64(1)));
Assert.AreEqual(-1, CodedInputStream.DecodeZigZag64(CodedOutputStream.EncodeZigZag64(-1)));
Assert.AreEqual(14927, CodedInputStream.DecodeZigZag64(CodedOutputStream.EncodeZigZag64(14927)));
Assert.AreEqual(-3612, CodedInputStream.DecodeZigZag64(CodedOutputStream.EncodeZigZag64(-3612)));
Assert.AreEqual(856912304801416L,
CodedInputStream.DecodeZigZag64(CodedOutputStream.EncodeZigZag64(856912304801416L)));
Assert.AreEqual(-75123905439571256L,
CodedInputStream.DecodeZigZag64(CodedOutputStream.EncodeZigZag64(-75123905439571256L)));
}
[TestMethod]
public void TestNegativeEnumNoTag()
{
Assert.AreEqual(10, CodedOutputStream.ComputeInt32SizeNoTag(-2));
Assert.AreEqual(10, CodedOutputStream.ComputeEnumSizeNoTag(-2));
byte[] bytes = new byte[10];
CodedOutputStream output = CodedOutputStream.CreateInstance(bytes);
output.WriteEnumNoTag(-2);
Assert.AreEqual(0, output.SpaceLeft);
Assert.AreEqual("FE-FF-FF-FF-FF-FF-FF-FF-FF-01", BitConverter.ToString(bytes));
}
[TestMethod]
public void TestNegativeEnumWithTag()
{
Assert.AreEqual(11, CodedOutputStream.ComputeInt32Size(8, -2));
Assert.AreEqual(11, CodedOutputStream.ComputeEnumSize(8, -2));
byte[] bytes = new byte[11];
CodedOutputStream output = CodedOutputStream.CreateInstance(bytes);
output.WriteEnum(8, "", -2, -2);
Assert.AreEqual(0, output.SpaceLeft);
//fyi, 0x40 == 0x08 << 3 + 0, field num + wire format shift
Assert.AreEqual("40-FE-FF-FF-FF-FF-FF-FF-FF-FF-01", BitConverter.ToString(bytes));
}
[TestMethod]
public void TestNegativeEnumArrayPacked()
{
int arraySize = 1 + (10 * 5);
int msgSize = 1 + 1 + arraySize;
byte[] bytes = new byte[msgSize];
CodedOutputStream output = CodedOutputStream.CreateInstance(bytes);
output.WritePackedEnumArray(8, "", arraySize, new int[] { 0, -1, -2, -3, -4, -5 });
Assert.AreEqual(0, output.SpaceLeft);
CodedInputStream input = CodedInputStream.CreateInstance(bytes);
uint tag;
string name;
Assert.IsTrue(input.ReadTag(out tag, out name));
List values = new List();
input.ReadInt32Array(tag, name, values);
Assert.AreEqual(6, values.Count);
for (int i = 0; i > -6; i--)
Assert.AreEqual(i, values[Math.Abs(i)]);
}
[TestMethod]
public void TestNegativeEnumArray()
{
int arraySize = 1 + 1 + (11 * 5);
int msgSize = arraySize;
byte[] bytes = new byte[msgSize];
CodedOutputStream output = CodedOutputStream.CreateInstance(bytes);
output.WriteEnumArray(8, "", new int[] { 0, -1, -2, -3, -4, -5 });
Assert.AreEqual(0, output.SpaceLeft);
CodedInputStream input = CodedInputStream.CreateInstance(bytes);
uint tag;
string name;
Assert.IsTrue(input.ReadTag(out tag, out name));
List values = new List();
input.ReadInt32Array(tag, name, values);
Assert.AreEqual(6, values.Count);
for (int i = 0; i > -6; i--)
Assert.AreEqual(i, values[Math.Abs(i)]);
}
}
}