diff options
Diffstat (limited to 'csharp/src/ProtocolBuffers.Test/CodedInputStreamTest.cs')
| -rw-r--r-- | csharp/src/ProtocolBuffers.Test/CodedInputStreamTest.cs | 639 |
1 files changed, 639 insertions, 0 deletions
diff --git a/csharp/src/ProtocolBuffers.Test/CodedInputStreamTest.cs b/csharp/src/ProtocolBuffers.Test/CodedInputStreamTest.cs new file mode 100644 index 00000000..b09d3340 --- /dev/null +++ b/csharp/src/ProtocolBuffers.Test/CodedInputStreamTest.cs @@ -0,0 +1,639 @@ +#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.Descriptors;
+using Google.ProtocolBuffers.TestProtos;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System.Diagnostics;
+
+namespace Google.ProtocolBuffers
+{
+ [TestClass]
+ public class CodedInputStreamTest
+ {
+ /// <summary>
+ /// Helper to construct a byte array from a bunch of bytes. The inputs are
+ /// actually ints so that I can use hex notation and not get stupid errors
+ /// about precision.
+ /// </summary>
+ private static byte[] Bytes(params int[] bytesAsInts)
+ {
+ byte[] bytes = new byte[bytesAsInts.Length];
+ for (int i = 0; i < bytesAsInts.Length; i++)
+ {
+ bytes[i] = (byte) bytesAsInts[i];
+ }
+ return bytes;
+ }
+
+ /// <summary>
+ /// Parses the given bytes using ReadRawVarint32() and ReadRawVarint64() and
+ /// </summary>
+ private static void AssertReadVarint(byte[] data, ulong value)
+ {
+ CodedInputStream input = CodedInputStream.CreateInstance(data);
+ Assert.AreEqual((uint) value, input.ReadRawVarint32());
+
+ input = CodedInputStream.CreateInstance(data);
+ Assert.AreEqual(value, input.ReadRawVarint64());
+ Assert.IsTrue(input.IsAtEnd);
+
+ // Try different block sizes.
+ for (int bufferSize = 1; bufferSize <= 16; bufferSize *= 2)
+ {
+ input = CodedInputStream.CreateInstance(new SmallBlockInputStream(data, bufferSize));
+ Assert.AreEqual((uint) value, input.ReadRawVarint32());
+
+ input = CodedInputStream.CreateInstance(new SmallBlockInputStream(data, bufferSize));
+ Assert.AreEqual(value, input.ReadRawVarint64());
+ Assert.IsTrue(input.IsAtEnd);
+ }
+
+ // Try reading directly from a MemoryStream. We want to verify that it
+ // doesn't read past the end of the input, so write an extra byte - this
+ // lets us test the position at the end.
+ MemoryStream memoryStream = new MemoryStream();
+ memoryStream.Write(data, 0, data.Length);
+ memoryStream.WriteByte(0);
+ memoryStream.Position = 0;
+ Assert.AreEqual((uint) value, CodedInputStream.ReadRawVarint32(memoryStream));
+ Assert.AreEqual(data.Length, memoryStream.Position);
+ }
+
+ /// <summary>
+ /// Parses the given bytes using ReadRawVarint32() and ReadRawVarint64() and
+ /// expects them to fail with an InvalidProtocolBufferException whose
+ /// description matches the given one.
+ /// </summary>
+ private static void AssertReadVarintFailure(InvalidProtocolBufferException expected, byte[] data)
+ {
+ CodedInputStream input = CodedInputStream.CreateInstance(data);
+ try
+ {
+ input.ReadRawVarint32();
+ Assert.Fail("Should have thrown an exception.");
+ }
+ catch (InvalidProtocolBufferException e)
+ {
+ Assert.AreEqual(expected.Message, e.Message);
+ }
+
+ input = CodedInputStream.CreateInstance(data);
+ try
+ {
+ input.ReadRawVarint64();
+ Assert.Fail("Should have thrown an exception.");
+ }
+ catch (InvalidProtocolBufferException e)
+ {
+ Assert.AreEqual(expected.Message, e.Message);
+ }
+
+ // Make sure we get the same error when reading directly from a Stream.
+ try
+ {
+ CodedInputStream.ReadRawVarint32(new MemoryStream(data));
+ Assert.Fail("Should have thrown an exception.");
+ }
+ catch (InvalidProtocolBufferException e)
+ {
+ Assert.AreEqual(expected.Message, e.Message);
+ }
+ }
+
+ [TestMethod]
+ public void ReadVarint()
+ {
+ AssertReadVarint(Bytes(0x00), 0);
+ AssertReadVarint(Bytes(0x01), 1);
+ AssertReadVarint(Bytes(0x7f), 127);
+ // 14882
+ AssertReadVarint(Bytes(0xa2, 0x74), (0x22 << 0) | (0x74 << 7));
+ // 2961488830
+ AssertReadVarint(Bytes(0xbe, 0xf7, 0x92, 0x84, 0x0b),
+ (0x3e << 0) | (0x77 << 7) | (0x12 << 14) | (0x04 << 21) |
+ (0x0bL << 28));
+
+ // 64-bit
+ // 7256456126
+ AssertReadVarint(Bytes(0xbe, 0xf7, 0x92, 0x84, 0x1b),
+ (0x3e << 0) | (0x77 << 7) | (0x12 << 14) | (0x04 << 21) |
+ (0x1bL << 28));
+ // 41256202580718336
+ AssertReadVarint(Bytes(0x80, 0xe6, 0xeb, 0x9c, 0xc3, 0xc9, 0xa4, 0x49),
+ (0x00 << 0) | (0x66 << 7) | (0x6b << 14) | (0x1c << 21) |
+ (0x43L << 28) | (0x49L << 35) | (0x24L << 42) | (0x49L << 49));
+ // 11964378330978735131
+ AssertReadVarint(Bytes(0x9b, 0xa8, 0xf9, 0xc2, 0xbb, 0xd6, 0x80, 0x85, 0xa6, 0x01),
+ (0x1b << 0) | (0x28 << 7) | (0x79 << 14) | (0x42 << 21) |
+ (0x3bUL << 28) | (0x56UL << 35) | (0x00UL << 42) |
+ (0x05UL << 49) | (0x26UL << 56) | (0x01UL << 63));
+
+ // Failures
+ AssertReadVarintFailure(
+ InvalidProtocolBufferException.MalformedVarint(),
+ Bytes(0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
+ 0x00));
+ AssertReadVarintFailure(
+ InvalidProtocolBufferException.TruncatedMessage(),
+ Bytes(0x80));
+ }
+
+ /// <summary>
+ /// Parses the given bytes using ReadRawLittleEndian32() and checks
+ /// that the result matches the given value.
+ /// </summary>
+ private static void AssertReadLittleEndian32(byte[] data, uint value)
+ {
+ CodedInputStream input = CodedInputStream.CreateInstance(data);
+ Assert.AreEqual(value, input.ReadRawLittleEndian32());
+ Assert.IsTrue(input.IsAtEnd);
+
+ // Try different block sizes.
+ for (int blockSize = 1; blockSize <= 16; blockSize *= 2)
+ {
+ input = CodedInputStream.CreateInstance(
+ new SmallBlockInputStream(data, blockSize));
+ Assert.AreEqual(value, input.ReadRawLittleEndian32());
+ Assert.IsTrue(input.IsAtEnd);
+ }
+ }
+
+ /// <summary>
+ /// Parses the given bytes using ReadRawLittleEndian64() and checks
+ /// that the result matches the given value.
+ /// </summary>
+ private static void AssertReadLittleEndian64(byte[] data, ulong value)
+ {
+ CodedInputStream input = CodedInputStream.CreateInstance(data);
+ Assert.AreEqual(value, input.ReadRawLittleEndian64());
+ Assert.IsTrue(input.IsAtEnd);
+
+ // Try different block sizes.
+ for (int blockSize = 1; blockSize <= 16; blockSize *= 2)
+ {
+ input = CodedInputStream.CreateInstance(
+ new SmallBlockInputStream(data, blockSize));
+ Assert.AreEqual(value, input.ReadRawLittleEndian64());
+ Assert.IsTrue(input.IsAtEnd);
+ }
+ }
+
+ [TestMethod]
+ public void ReadLittleEndian()
+ {
+ AssertReadLittleEndian32(Bytes(0x78, 0x56, 0x34, 0x12), 0x12345678);
+ AssertReadLittleEndian32(Bytes(0xf0, 0xde, 0xbc, 0x9a), 0x9abcdef0);
+
+ AssertReadLittleEndian64(Bytes(0xf0, 0xde, 0xbc, 0x9a, 0x78, 0x56, 0x34, 0x12),
+ 0x123456789abcdef0L);
+ AssertReadLittleEndian64(
+ Bytes(0x78, 0x56, 0x34, 0x12, 0xf0, 0xde, 0xbc, 0x9a), 0x9abcdef012345678UL);
+ }
+
+ [TestMethod]
+ public void DecodeZigZag32()
+ {
+ Assert.AreEqual(0, CodedInputStream.DecodeZigZag32(0));
+ Assert.AreEqual(-1, CodedInputStream.DecodeZigZag32(1));
+ Assert.AreEqual(1, CodedInputStream.DecodeZigZag32(2));
+ Assert.AreEqual(-2, CodedInputStream.DecodeZigZag32(3));
+ Assert.AreEqual(0x3FFFFFFF, CodedInputStream.DecodeZigZag32(0x7FFFFFFE));
+ Assert.AreEqual(unchecked((int) 0xC0000000), CodedInputStream.DecodeZigZag32(0x7FFFFFFF));
+ Assert.AreEqual(0x7FFFFFFF, CodedInputStream.DecodeZigZag32(0xFFFFFFFE));
+ Assert.AreEqual(unchecked((int) 0x80000000), CodedInputStream.DecodeZigZag32(0xFFFFFFFF));
+ }
+
+ [TestMethod]
+ public void DecodeZigZag64()
+ {
+ Assert.AreEqual(0, CodedInputStream.DecodeZigZag64(0));
+ Assert.AreEqual(-1, CodedInputStream.DecodeZigZag64(1));
+ Assert.AreEqual(1, CodedInputStream.DecodeZigZag64(2));
+ Assert.AreEqual(-2, CodedInputStream.DecodeZigZag64(3));
+ Assert.AreEqual(0x000000003FFFFFFFL, CodedInputStream.DecodeZigZag64(0x000000007FFFFFFEL));
+ Assert.AreEqual(unchecked((long) 0xFFFFFFFFC0000000L), CodedInputStream.DecodeZigZag64(0x000000007FFFFFFFL));
+ Assert.AreEqual(0x000000007FFFFFFFL, CodedInputStream.DecodeZigZag64(0x00000000FFFFFFFEL));
+ Assert.AreEqual(unchecked((long) 0xFFFFFFFF80000000L), CodedInputStream.DecodeZigZag64(0x00000000FFFFFFFFL));
+ Assert.AreEqual(0x7FFFFFFFFFFFFFFFL, CodedInputStream.DecodeZigZag64(0xFFFFFFFFFFFFFFFEL));
+ Assert.AreEqual(unchecked((long) 0x8000000000000000L), CodedInputStream.DecodeZigZag64(0xFFFFFFFFFFFFFFFFL));
+ }
+
+ [TestMethod]
+ public void ReadWholeMessage()
+ {
+ TestAllTypes message = TestUtil.GetAllSet();
+
+ byte[] rawBytes = message.ToByteArray();
+ Assert.AreEqual(rawBytes.Length, message.SerializedSize);
+ TestAllTypes message2 = TestAllTypes.ParseFrom(rawBytes);
+ TestUtil.AssertAllFieldsSet(message2);
+
+ // Try different block sizes.
+ for (int blockSize = 1; blockSize < 256; blockSize *= 2)
+ {
+ message2 = TestAllTypes.ParseFrom(new SmallBlockInputStream(rawBytes, blockSize));
+ TestUtil.AssertAllFieldsSet(message2);
+ }
+ }
+
+ [TestMethod]
+ public void SkipWholeMessage()
+ {
+ TestAllTypes message = TestUtil.GetAllSet();
+ byte[] rawBytes = message.ToByteArray();
+
+ // Create two parallel inputs. Parse one as unknown fields while using
+ // skipField() to skip each field on the other. Expect the same tags.
+ CodedInputStream input1 = CodedInputStream.CreateInstance(rawBytes);
+ CodedInputStream input2 = CodedInputStream.CreateInstance(rawBytes);
+ UnknownFieldSet.Builder unknownFields = UnknownFieldSet.CreateBuilder();
+
+ uint tag;
+ string name;
+ while (input1.ReadTag(out tag, out name))
+ {
+ uint tag2;
+ Assert.IsTrue(input2.ReadTag(out tag2, out name));
+ Assert.AreEqual(tag, tag2);
+
+ unknownFields.MergeFieldFrom(tag, input1);
+ input2.SkipField();
+ }
+ }
+
+ /// <summary>
+ /// Test that a bug in SkipRawBytes has been fixed: if the skip
+ /// skips exactly up to a limit, this should bnot break things
+ /// </summary>
+ [TestMethod]
+ public void SkipRawBytesBug()
+ {
+ byte[] rawBytes = new byte[] {1, 2};
+ CodedInputStream input = CodedInputStream.CreateInstance(rawBytes);
+
+ int limit = input.PushLimit(1);
+ input.SkipRawBytes(1);
+ input.PopLimit(limit);
+ Assert.AreEqual(2, input.ReadRawByte());
+ }
+
+ public void ReadHugeBlob()
+ {
+ // Allocate and initialize a 1MB blob.
+ byte[] blob = new byte[1 << 20];
+ for (int i = 0; i < blob.Length; i++)
+ {
+ blob[i] = (byte) i;
+ }
+
+ // Make a message containing it.
+ TestAllTypes.Builder builder = TestAllTypes.CreateBuilder();
+ TestUtil.SetAllFields(builder);
+ builder.SetOptionalBytes(ByteString.CopyFrom(blob));
+ TestAllTypes message = builder.Build();
+
+ // Serialize and parse it. Make sure to parse from an InputStream, not
+ // directly from a ByteString, so that CodedInputStream uses buffered
+ // reading.
+ TestAllTypes message2 = TestAllTypes.ParseFrom(message.ToByteString().CreateCodedInput());
+
+ Assert.AreEqual(message.OptionalBytes, message2.OptionalBytes);
+
+ // Make sure all the other fields were parsed correctly.
+ TestAllTypes message3 = TestAllTypes.CreateBuilder(message2)
+ .SetOptionalBytes(TestUtil.GetAllSet().OptionalBytes)
+ .Build();
+ TestUtil.AssertAllFieldsSet(message3);
+ }
+
+ [TestMethod]
+ public void ReadMaliciouslyLargeBlob()
+ {
+ MemoryStream ms = new MemoryStream();
+ CodedOutputStream output = CodedOutputStream.CreateInstance(ms);
+
+ uint tag = WireFormat.MakeTag(1, WireFormat.WireType.LengthDelimited);
+ output.WriteRawVarint32(tag);
+ output.WriteRawVarint32(0x7FFFFFFF);
+ output.WriteRawBytes(new byte[32]); // Pad with a few random bytes.
+ output.Flush();
+ ms.Position = 0;
+
+ CodedInputStream input = CodedInputStream.CreateInstance(ms);
+ uint testtag;
+ string ignore;
+ Assert.IsTrue(input.ReadTag(out testtag, out ignore));
+ Assert.AreEqual(tag, testtag);
+
+ try
+ {
+ ByteString bytes = null;
+ input.ReadBytes(ref bytes);
+ Assert.Fail("Should have thrown an exception!");
+ }
+ catch (InvalidProtocolBufferException)
+ {
+ // success.
+ }
+ }
+
+ private static TestRecursiveMessage MakeRecursiveMessage(int depth)
+ {
+ if (depth == 0)
+ {
+ return TestRecursiveMessage.CreateBuilder().SetI(5).Build();
+ }
+ else
+ {
+ return TestRecursiveMessage.CreateBuilder()
+ .SetA(MakeRecursiveMessage(depth - 1)).Build();
+ }
+ }
+
+ private static void AssertMessageDepth(TestRecursiveMessage message, int depth)
+ {
+ if (depth == 0)
+ {
+ Assert.IsFalse(message.HasA);
+ Assert.AreEqual(5, message.I);
+ }
+ else
+ {
+ Assert.IsTrue(message.HasA);
+ AssertMessageDepth(message.A, depth - 1);
+ }
+ }
+
+ [TestMethod]
+ public void MaliciousRecursion()
+ {
+ ByteString data64 = MakeRecursiveMessage(64).ToByteString();
+ ByteString data65 = MakeRecursiveMessage(65).ToByteString();
+
+ AssertMessageDepth(TestRecursiveMessage.ParseFrom(data64), 64);
+
+ try
+ {
+ TestRecursiveMessage.ParseFrom(data65);
+ Assert.Fail("Should have thrown an exception!");
+ }
+ catch (InvalidProtocolBufferException)
+ {
+ // success.
+ }
+
+ CodedInputStream input = data64.CreateCodedInput();
+ input.SetRecursionLimit(8);
+ try
+ {
+ TestRecursiveMessage.ParseFrom(input);
+ Assert.Fail("Should have thrown an exception!");
+ }
+ catch (InvalidProtocolBufferException)
+ {
+ // success.
+ }
+ }
+
+ [TestMethod]
+ public void SizeLimit()
+ {
+ // Have to use a Stream rather than ByteString.CreateCodedInput as SizeLimit doesn't
+ // apply to the latter case.
+ MemoryStream ms = new MemoryStream(TestUtil.GetAllSet().ToByteString().ToByteArray());
+ CodedInputStream input = CodedInputStream.CreateInstance(ms);
+ input.SetSizeLimit(16);
+
+ try
+ {
+ TestAllTypes.ParseFrom(input);
+ Assert.Fail("Should have thrown an exception!");
+ }
+ catch (InvalidProtocolBufferException)
+ {
+ // success.
+ }
+ }
+
+ [TestMethod]
+ public void ResetSizeCounter()
+ {
+ CodedInputStream input = CodedInputStream.CreateInstance(
+ new SmallBlockInputStream(new byte[256], 8));
+ input.SetSizeLimit(16);
+ input.ReadRawBytes(16);
+
+ try
+ {
+ input.ReadRawByte();
+ Assert.Fail("Should have thrown an exception!");
+ }
+ catch (InvalidProtocolBufferException)
+ {
+ // Success.
+ }
+
+ input.ResetSizeCounter();
+ input.ReadRawByte(); // No exception thrown.
+
+ try
+ {
+ input.ReadRawBytes(16); // Hits limit again.
+ Assert.Fail("Should have thrown an exception!");
+ }
+ catch (InvalidProtocolBufferException)
+ {
+ // Success.
+ }
+ }
+
+ /// <summary>
+ /// Tests that if we read an string that contains invalid UTF-8, no exception
+ /// is thrown. Instead, the invalid bytes are replaced with the Unicode
+ /// "replacement character" U+FFFD.
+ /// </summary>
+ [TestMethod]
+ public void ReadInvalidUtf8()
+ {
+ MemoryStream ms = new MemoryStream();
+ CodedOutputStream output = CodedOutputStream.CreateInstance(ms);
+
+ uint tag = WireFormat.MakeTag(1, WireFormat.WireType.LengthDelimited);
+ output.WriteRawVarint32(tag);
+ output.WriteRawVarint32(1);
+ output.WriteRawBytes(new byte[] {0x80});
+ output.Flush();
+ ms.Position = 0;
+
+ CodedInputStream input = CodedInputStream.CreateInstance(ms);
+
+ uint testtag;
+ string ignored;
+
+ Assert.IsTrue(input.ReadTag(out testtag, out ignored));
+ Assert.AreEqual(tag, testtag);
+ string text = null;
+ input.ReadString(ref text);
+ Assert.AreEqual('\ufffd', text[0]);
+ }
+
+ /// <summary>
+ /// A stream which limits the number of bytes it reads at a time.
+ /// We use this to make sure that CodedInputStream doesn't screw up when
+ /// reading in small blocks.
+ /// </summary>
+ private sealed class SmallBlockInputStream : MemoryStream
+ {
+ private readonly int blockSize;
+
+ public SmallBlockInputStream(byte[] data, int blockSize)
+ : base(data)
+ {
+ this.blockSize = blockSize;
+ }
+
+ public override int Read(byte[] buffer, int offset, int count)
+ {
+ return base.Read(buffer, offset, Math.Min(count, blockSize));
+ }
+ }
+
+ enum TestNegEnum { None = 0, Value = -2 }
+
+ [TestMethod]
+ public void TestNegativeEnum()
+ {
+ byte[] bytes = new byte[10] { 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x01 };
+ CodedInputStream input = CodedInputStream.CreateInstance(bytes);
+ object unk;
+ TestNegEnum val = TestNegEnum.None;
+
+ Assert.IsTrue(input.ReadEnum(ref val, out unk));
+ Assert.IsTrue(input.IsAtEnd);
+ Assert.AreEqual(TestNegEnum.Value, val);
+ }
+
+ [TestMethod]
+ public void TestNegativeEnumPackedArray()
+ {
+ int arraySize = 1 + (10 * 5);
+ int msgSize = 1 + 1 + arraySize;
+ byte[] bytes = new byte[msgSize];
+ CodedOutputStream output = CodedOutputStream.CreateInstance(bytes);
+ output.WritePackedInt32Array(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<TestNegEnum> values = new List<TestNegEnum>();
+ ICollection<object> unk;
+ input.ReadEnumArray(tag, name, values, out unk);
+
+ Assert.AreEqual(2, values.Count);
+ Assert.AreEqual(TestNegEnum.None, values[0]);
+ Assert.AreEqual(TestNegEnum.Value, values[1]);
+
+ Assert.IsNotNull(unk);
+ Assert.AreEqual(4, unk.Count);
+ }
+
+ [TestMethod]
+ public void TestNegativeEnumArray()
+ {
+ int arraySize = 1 + 1 + (11 * 5);
+ int msgSize = arraySize;
+ byte[] bytes = new byte[msgSize];
+ CodedOutputStream output = CodedOutputStream.CreateInstance(bytes);
+ output.WriteInt32Array(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<TestNegEnum> values = new List<TestNegEnum>();
+ ICollection<object> unk;
+ input.ReadEnumArray(tag, name, values, out unk);
+
+ Assert.AreEqual(2, values.Count);
+ Assert.AreEqual(TestNegEnum.None, values[0]);
+ Assert.AreEqual(TestNegEnum.Value, values[1]);
+
+ Assert.IsNotNull(unk);
+ Assert.AreEqual(4, unk.Count);
+ }
+
+ //Issue 71: CodedInputStream.ReadBytes go to slow path unnecessarily
+ [TestMethod]
+ public void TestSlowPathAvoidance()
+ {
+ using (var ms = new MemoryStream())
+ {
+ CodedOutputStream output = CodedOutputStream.CreateInstance(ms);
+ output.WriteField(FieldType.Bytes, 1, "bytes", ByteString.CopyFrom(new byte[100]));
+ output.WriteField(FieldType.Bytes, 2, "bytes", ByteString.CopyFrom(new byte[100]));
+ output.Flush();
+
+ ms.Position = 0;
+ CodedInputStream input = CodedInputStream.CreateInstance(ms, new byte[ms.Length / 2]);
+
+ uint tag;
+ string ignore;
+ ByteString value;
+
+ Assert.IsTrue(input.ReadTag(out tag, out ignore));
+ Assert.AreEqual(1, WireFormat.GetTagFieldNumber(tag));
+ value = ByteString.Empty;
+ Assert.IsTrue(input.ReadBytes(ref value) && value.Length == 100);
+
+ Assert.IsTrue(input.ReadTag(out tag, out ignore));
+ Assert.AreEqual(2, WireFormat.GetTagFieldNumber(tag));
+ value = ByteString.Empty;
+ Assert.IsTrue(input.ReadBytes(ref value) && value.Length == 100);
+ }
+ }
+ }
+}
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