1 #region Copyright notice and license 2 // Protocol Buffers - Google's data interchange format 3 // Copyright 2008 Google Inc. All rights reserved. 4 // https://developers.google.com/protocol-buffers/ 5 // 6 // Redistribution and use in source and binary forms, with or without 7 // modification, are permitted provided that the following conditions are 8 // met: 9 // 10 // * Redistributions of source code must retain the above copyright 11 // notice, this list of conditions and the following disclaimer. 12 // * Redistributions in binary form must reproduce the above 13 // copyright notice, this list of conditions and the following disclaimer 14 // in the documentation and/or other materials provided with the 15 // distribution. 16 // * Neither the name of Google Inc. nor the names of its 17 // contributors may be used to endorse or promote products derived from 18 // this software without specific prior written permission. 19 // 20 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 23 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 24 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 25 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 26 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 30 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 #endregion 32 33 using System; 34 using System.IO; 35 using Google.Protobuf.TestProtos; 36 using Google.Protobuf.Buffers; 37 using NUnit.Framework; 38 using System.Text; 39 40 namespace Google.Protobuf 41 { 42 public class CodedOutputStreamTest 43 { 44 /// <summary> 45 /// Writes the given value using WriteRawVarint32() and WriteRawVarint64() and 46 /// checks that the result matches the given bytes 47 /// </summary> AssertWriteVarint(byte[] data, ulong value)48 private static void AssertWriteVarint(byte[] data, ulong value) 49 { 50 // Only do 32-bit write if the value fits in 32 bits. 51 if ((value >> 32) == 0) 52 { 53 // CodedOutputStream 54 MemoryStream rawOutput = new MemoryStream(); 55 CodedOutputStream output = new CodedOutputStream(rawOutput); 56 output.WriteRawVarint32((uint) value); 57 output.Flush(); 58 Assert.AreEqual(data, rawOutput.ToArray()); 59 60 // IBufferWriter 61 var bufferWriter = new TestArrayBufferWriter<byte>(); 62 WriteContext.Initialize(bufferWriter, out WriteContext ctx); 63 ctx.WriteUInt32((uint) value); 64 ctx.Flush(); 65 Assert.AreEqual(data, bufferWriter.WrittenSpan.ToArray()); 66 67 // Also try computing size. 68 Assert.AreEqual(data.Length, CodedOutputStream.ComputeRawVarint32Size((uint) value)); 69 } 70 71 { 72 // CodedOutputStream 73 MemoryStream rawOutput = new MemoryStream(); 74 CodedOutputStream output = new CodedOutputStream(rawOutput); 75 output.WriteRawVarint64(value); 76 output.Flush(); 77 Assert.AreEqual(data, rawOutput.ToArray()); 78 79 // IBufferWriter 80 var bufferWriter = new TestArrayBufferWriter<byte>(); 81 WriteContext.Initialize(bufferWriter, out WriteContext ctx); 82 ctx.WriteUInt64(value); 83 ctx.Flush(); 84 Assert.AreEqual(data, bufferWriter.WrittenSpan.ToArray()); 85 86 // Also try computing size. 87 Assert.AreEqual(data.Length, CodedOutputStream.ComputeRawVarint64Size(value)); 88 } 89 90 // Try different buffer sizes. 91 for (int bufferSize = 1; bufferSize <= 16; bufferSize *= 2) 92 { 93 // Only do 32-bit write if the value fits in 32 bits. 94 if ((value >> 32) == 0) 95 { 96 MemoryStream rawOutput = new MemoryStream(); 97 CodedOutputStream output = 98 new CodedOutputStream(rawOutput, bufferSize); 99 output.WriteRawVarint32((uint) value); 100 output.Flush(); 101 Assert.AreEqual(data, rawOutput.ToArray()); 102 103 var bufferWriter = new TestArrayBufferWriter<byte>(); 104 bufferWriter.MaxGrowBy = bufferSize; 105 WriteContext.Initialize(bufferWriter, out WriteContext ctx); 106 ctx.WriteUInt32((uint) value); 107 ctx.Flush(); 108 Assert.AreEqual(data, bufferWriter.WrittenSpan.ToArray()); 109 } 110 111 { 112 MemoryStream rawOutput = new MemoryStream(); 113 CodedOutputStream output = new CodedOutputStream(rawOutput, bufferSize); 114 output.WriteRawVarint64(value); 115 output.Flush(); 116 Assert.AreEqual(data, rawOutput.ToArray()); 117 118 var bufferWriter = new TestArrayBufferWriter<byte>(); 119 bufferWriter.MaxGrowBy = bufferSize; 120 WriteContext.Initialize(bufferWriter, out WriteContext ctx); 121 ctx.WriteUInt64(value); 122 ctx.Flush(); 123 Assert.AreEqual(data, bufferWriter.WrittenSpan.ToArray()); 124 } 125 126 } 127 } 128 129 /// <summary> 130 /// Tests WriteRawVarint32() and WriteRawVarint64() 131 /// </summary> 132 [Test] WriteVarint()133 public void WriteVarint() 134 { 135 AssertWriteVarint(new byte[] {0x00}, 0); 136 AssertWriteVarint(new byte[] {0x01}, 1); 137 AssertWriteVarint(new byte[] {0x7f}, 127); 138 // 14882 139 AssertWriteVarint(new byte[] {0xa2, 0x74}, (0x22 << 0) | (0x74 << 7)); 140 // 2961488830 141 AssertWriteVarint(new byte[] {0xbe, 0xf7, 0x92, 0x84, 0x0b}, 142 (0x3e << 0) | (0x77 << 7) | (0x12 << 14) | (0x04 << 21) | 143 (0x0bL << 28)); 144 145 // 64-bit 146 // 7256456126 147 AssertWriteVarint(new byte[] {0xbe, 0xf7, 0x92, 0x84, 0x1b}, 148 (0x3e << 0) | (0x77 << 7) | (0x12 << 14) | (0x04 << 21) | 149 (0x1bL << 28)); 150 // 41256202580718336 151 AssertWriteVarint( 152 new byte[] {0x80, 0xe6, 0xeb, 0x9c, 0xc3, 0xc9, 0xa4, 0x49}, 153 (0x00 << 0) | (0x66 << 7) | (0x6b << 14) | (0x1c << 21) | 154 (0x43UL << 28) | (0x49L << 35) | (0x24UL << 42) | (0x49UL << 49)); 155 // 11964378330978735131 156 AssertWriteVarint( 157 new byte[] {0x9b, 0xa8, 0xf9, 0xc2, 0xbb, 0xd6, 0x80, 0x85, 0xa6, 0x01}, 158 unchecked((ulong) 159 ((0x1b << 0) | (0x28 << 7) | (0x79 << 14) | (0x42 << 21) | 160 (0x3bL << 28) | (0x56L << 35) | (0x00L << 42) | 161 (0x05L << 49) | (0x26L << 56) | (0x01L << 63)))); 162 } 163 164 /// <summary> 165 /// Parses the given bytes using WriteRawLittleEndian32() and checks 166 /// that the result matches the given value. 167 /// </summary> AssertWriteLittleEndian32(byte[] data, uint value)168 private static void AssertWriteLittleEndian32(byte[] data, uint value) 169 { 170 { 171 var rawOutput = new MemoryStream(); 172 var output = new CodedOutputStream(rawOutput); 173 output.WriteRawLittleEndian32(value); 174 output.Flush(); 175 Assert.AreEqual(data, rawOutput.ToArray()); 176 177 var bufferWriter = new TestArrayBufferWriter<byte>(); 178 WriteContext.Initialize(bufferWriter, out WriteContext ctx); 179 ctx.WriteFixed32(value); 180 ctx.Flush(); 181 Assert.AreEqual(data, bufferWriter.WrittenSpan.ToArray()); 182 } 183 184 // Try different buffer sizes. 185 for (int bufferSize = 1; bufferSize <= 16; bufferSize *= 2) 186 { 187 var rawOutput = new MemoryStream(); 188 var output = new CodedOutputStream(rawOutput, bufferSize); 189 output.WriteRawLittleEndian32(value); 190 output.Flush(); 191 Assert.AreEqual(data, rawOutput.ToArray()); 192 193 var bufferWriter = new TestArrayBufferWriter<byte>(); 194 bufferWriter.MaxGrowBy = bufferSize; 195 WriteContext.Initialize(bufferWriter, out WriteContext ctx); 196 ctx.WriteFixed32(value); 197 ctx.Flush(); 198 Assert.AreEqual(data, bufferWriter.WrittenSpan.ToArray()); 199 } 200 } 201 202 /// <summary> 203 /// Parses the given bytes using WriteRawLittleEndian64() and checks 204 /// that the result matches the given value. 205 /// </summary> AssertWriteLittleEndian64(byte[] data, ulong value)206 private static void AssertWriteLittleEndian64(byte[] data, ulong value) 207 { 208 { 209 var rawOutput = new MemoryStream(); 210 var output = new CodedOutputStream(rawOutput); 211 output.WriteRawLittleEndian64(value); 212 output.Flush(); 213 Assert.AreEqual(data, rawOutput.ToArray()); 214 215 var bufferWriter = new TestArrayBufferWriter<byte>(); 216 WriteContext.Initialize(bufferWriter, out WriteContext ctx); 217 ctx.WriteFixed64(value); 218 ctx.Flush(); 219 Assert.AreEqual(data, bufferWriter.WrittenSpan.ToArray()); 220 } 221 222 // Try different block sizes. 223 for (int blockSize = 1; blockSize <= 16; blockSize *= 2) 224 { 225 var rawOutput = new MemoryStream(); 226 var output = new CodedOutputStream(rawOutput, blockSize); 227 output.WriteRawLittleEndian64(value); 228 output.Flush(); 229 Assert.AreEqual(data, rawOutput.ToArray()); 230 231 var bufferWriter = new TestArrayBufferWriter<byte>(); 232 bufferWriter.MaxGrowBy = blockSize; 233 WriteContext.Initialize(bufferWriter, out WriteContext ctx); 234 ctx.WriteFixed64(value); 235 ctx.Flush(); 236 Assert.AreEqual(data, bufferWriter.WrittenSpan.ToArray()); 237 } 238 } 239 240 /// <summary> 241 /// Tests writeRawLittleEndian32() and writeRawLittleEndian64(). 242 /// </summary> 243 [Test] WriteLittleEndian()244 public void WriteLittleEndian() 245 { 246 AssertWriteLittleEndian32(new byte[] {0x78, 0x56, 0x34, 0x12}, 0x12345678); 247 AssertWriteLittleEndian32(new byte[] {0xf0, 0xde, 0xbc, 0x9a}, 0x9abcdef0); 248 249 AssertWriteLittleEndian64( 250 new byte[] {0xf0, 0xde, 0xbc, 0x9a, 0x78, 0x56, 0x34, 0x12}, 251 0x123456789abcdef0L); 252 AssertWriteLittleEndian64( 253 new byte[] {0x78, 0x56, 0x34, 0x12, 0xf0, 0xde, 0xbc, 0x9a}, 254 0x9abcdef012345678UL); 255 } 256 257 [Test] WriteWholeMessage_VaryingBlockSizes()258 public void WriteWholeMessage_VaryingBlockSizes() 259 { 260 TestAllTypes message = SampleMessages.CreateFullTestAllTypes(); 261 262 byte[] rawBytes = message.ToByteArray(); 263 264 // Try different block sizes. 265 for (int blockSize = 1; blockSize < 256; blockSize *= 2) 266 { 267 MemoryStream rawOutput = new MemoryStream(); 268 CodedOutputStream output = new CodedOutputStream(rawOutput, blockSize); 269 message.WriteTo(output); 270 output.Flush(); 271 Assert.AreEqual(rawBytes, rawOutput.ToArray()); 272 273 var bufferWriter = new TestArrayBufferWriter<byte>(); 274 bufferWriter.MaxGrowBy = blockSize; 275 message.WriteTo(bufferWriter); 276 Assert.AreEqual(rawBytes, bufferWriter.WrittenSpan.ToArray()); 277 } 278 } 279 280 [Test] WriteContext_WritesWithFlushes()281 public void WriteContext_WritesWithFlushes() 282 { 283 TestAllTypes message = SampleMessages.CreateFullTestAllTypes(); 284 285 MemoryStream expectedOutput = new MemoryStream(); 286 CodedOutputStream output = new CodedOutputStream(expectedOutput); 287 output.WriteMessage(message); 288 output.Flush(); 289 byte[] expectedBytes1 = expectedOutput.ToArray(); 290 291 output.WriteMessage(message); 292 output.Flush(); 293 byte[] expectedBytes2 = expectedOutput.ToArray(); 294 295 var bufferWriter = new TestArrayBufferWriter<byte>(); 296 WriteContext.Initialize(bufferWriter, out WriteContext ctx); 297 ctx.WriteMessage(message); 298 ctx.Flush(); 299 Assert.AreEqual(expectedBytes1, bufferWriter.WrittenSpan.ToArray()); 300 301 ctx.WriteMessage(message); 302 ctx.Flush(); 303 Assert.AreEqual(expectedBytes2, bufferWriter.WrittenSpan.ToArray()); 304 } 305 306 [Test] EncodeZigZag32()307 public void EncodeZigZag32() 308 { 309 Assert.AreEqual(0u, WritingPrimitives.EncodeZigZag32(0)); 310 Assert.AreEqual(1u, WritingPrimitives.EncodeZigZag32(-1)); 311 Assert.AreEqual(2u, WritingPrimitives.EncodeZigZag32(1)); 312 Assert.AreEqual(3u, WritingPrimitives.EncodeZigZag32(-2)); 313 Assert.AreEqual(0x7FFFFFFEu, WritingPrimitives.EncodeZigZag32(0x3FFFFFFF)); 314 Assert.AreEqual(0x7FFFFFFFu, WritingPrimitives.EncodeZigZag32(unchecked((int) 0xC0000000))); 315 Assert.AreEqual(0xFFFFFFFEu, WritingPrimitives.EncodeZigZag32(0x7FFFFFFF)); 316 Assert.AreEqual(0xFFFFFFFFu, WritingPrimitives.EncodeZigZag32(unchecked((int) 0x80000000))); 317 } 318 319 [Test] EncodeZigZag64()320 public void EncodeZigZag64() 321 { 322 Assert.AreEqual(0u, WritingPrimitives.EncodeZigZag64(0)); 323 Assert.AreEqual(1u, WritingPrimitives.EncodeZigZag64(-1)); 324 Assert.AreEqual(2u, WritingPrimitives.EncodeZigZag64(1)); 325 Assert.AreEqual(3u, WritingPrimitives.EncodeZigZag64(-2)); 326 Assert.AreEqual(0x000000007FFFFFFEuL, 327 WritingPrimitives.EncodeZigZag64(unchecked((long) 0x000000003FFFFFFFUL))); 328 Assert.AreEqual(0x000000007FFFFFFFuL, 329 WritingPrimitives.EncodeZigZag64(unchecked((long) 0xFFFFFFFFC0000000UL))); 330 Assert.AreEqual(0x00000000FFFFFFFEuL, 331 WritingPrimitives.EncodeZigZag64(unchecked((long) 0x000000007FFFFFFFUL))); 332 Assert.AreEqual(0x00000000FFFFFFFFuL, 333 WritingPrimitives.EncodeZigZag64(unchecked((long) 0xFFFFFFFF80000000UL))); 334 Assert.AreEqual(0xFFFFFFFFFFFFFFFEL, 335 WritingPrimitives.EncodeZigZag64(unchecked((long) 0x7FFFFFFFFFFFFFFFUL))); 336 Assert.AreEqual(0xFFFFFFFFFFFFFFFFL, 337 WritingPrimitives.EncodeZigZag64(unchecked((long) 0x8000000000000000UL))); 338 } 339 340 [Test] RoundTripZigZag32()341 public void RoundTripZigZag32() 342 { 343 // Some easier-to-verify round-trip tests. The inputs (other than 0, 1, -1) 344 // were chosen semi-randomly via keyboard bashing. 345 Assert.AreEqual(0, ParsingPrimitives.DecodeZigZag32(WritingPrimitives.EncodeZigZag32(0))); 346 Assert.AreEqual(1, ParsingPrimitives.DecodeZigZag32(WritingPrimitives.EncodeZigZag32(1))); 347 Assert.AreEqual(-1, ParsingPrimitives.DecodeZigZag32(WritingPrimitives.EncodeZigZag32(-1))); 348 Assert.AreEqual(14927, ParsingPrimitives.DecodeZigZag32(WritingPrimitives.EncodeZigZag32(14927))); 349 Assert.AreEqual(-3612, ParsingPrimitives.DecodeZigZag32(WritingPrimitives.EncodeZigZag32(-3612))); 350 } 351 352 [Test] RoundTripZigZag64()353 public void RoundTripZigZag64() 354 { 355 Assert.AreEqual(0, ParsingPrimitives.DecodeZigZag64(WritingPrimitives.EncodeZigZag64(0))); 356 Assert.AreEqual(1, ParsingPrimitives.DecodeZigZag64(WritingPrimitives.EncodeZigZag64(1))); 357 Assert.AreEqual(-1, ParsingPrimitives.DecodeZigZag64(WritingPrimitives.EncodeZigZag64(-1))); 358 Assert.AreEqual(14927, ParsingPrimitives.DecodeZigZag64(WritingPrimitives.EncodeZigZag64(14927))); 359 Assert.AreEqual(-3612, ParsingPrimitives.DecodeZigZag64(WritingPrimitives.EncodeZigZag64(-3612))); 360 361 Assert.AreEqual(856912304801416L, 362 ParsingPrimitives.DecodeZigZag64(WritingPrimitives.EncodeZigZag64(856912304801416L))); 363 Assert.AreEqual(-75123905439571256L, 364 ParsingPrimitives.DecodeZigZag64(WritingPrimitives.EncodeZigZag64(-75123905439571256L))); 365 } 366 367 [Test] TestNegativeEnumNoTag()368 public void TestNegativeEnumNoTag() 369 { 370 Assert.AreEqual(10, CodedOutputStream.ComputeInt32Size(-2)); 371 Assert.AreEqual(10, CodedOutputStream.ComputeEnumSize((int) SampleEnum.NegativeValue)); 372 373 byte[] bytes = new byte[10]; 374 CodedOutputStream output = new CodedOutputStream(bytes); 375 output.WriteEnum((int) SampleEnum.NegativeValue); 376 377 Assert.AreEqual(0, output.SpaceLeft); 378 Assert.AreEqual("FE-FF-FF-FF-FF-FF-FF-FF-FF-01", BitConverter.ToString(bytes)); 379 } 380 381 [Test] TestCodedInputOutputPosition()382 public void TestCodedInputOutputPosition() 383 { 384 byte[] content = new byte[110]; 385 for (int i = 0; i < content.Length; i++) 386 content[i] = (byte)i; 387 388 byte[] child = new byte[120]; 389 { 390 MemoryStream ms = new MemoryStream(child); 391 CodedOutputStream cout = new CodedOutputStream(ms, 20); 392 // Field 11: numeric value: 500 393 cout.WriteTag(11, WireFormat.WireType.Varint); 394 Assert.AreEqual(1, cout.Position); 395 cout.WriteInt32(500); 396 Assert.AreEqual(3, cout.Position); 397 //Field 12: length delimited 120 bytes 398 cout.WriteTag(12, WireFormat.WireType.LengthDelimited); 399 Assert.AreEqual(4, cout.Position); 400 cout.WriteBytes(ByteString.CopyFrom(content)); 401 Assert.AreEqual(115, cout.Position); 402 // Field 13: fixed numeric value: 501 403 cout.WriteTag(13, WireFormat.WireType.Fixed32); 404 Assert.AreEqual(116, cout.Position); 405 cout.WriteSFixed32(501); 406 Assert.AreEqual(120, cout.Position); 407 cout.Flush(); 408 } 409 410 byte[] bytes = new byte[130]; 411 { 412 CodedOutputStream cout = new CodedOutputStream(bytes); 413 // Field 1: numeric value: 500 414 cout.WriteTag(1, WireFormat.WireType.Varint); 415 Assert.AreEqual(1, cout.Position); 416 cout.WriteInt32(500); 417 Assert.AreEqual(3, cout.Position); 418 //Field 2: length delimited 120 bytes 419 cout.WriteTag(2, WireFormat.WireType.LengthDelimited); 420 Assert.AreEqual(4, cout.Position); 421 cout.WriteBytes(ByteString.CopyFrom(child)); 422 Assert.AreEqual(125, cout.Position); 423 // Field 3: fixed numeric value: 500 424 cout.WriteTag(3, WireFormat.WireType.Fixed32); 425 Assert.AreEqual(126, cout.Position); 426 cout.WriteSFixed32(501); 427 Assert.AreEqual(130, cout.Position); 428 cout.Flush(); 429 } 430 // Now test Input stream: 431 { 432 CodedInputStream cin = new CodedInputStream(new MemoryStream(bytes), new byte[50], 0, 0, false); 433 Assert.AreEqual(0, cin.Position); 434 // Field 1: 435 uint tag = cin.ReadTag(); 436 Assert.AreEqual(1, tag >> 3); 437 Assert.AreEqual(1, cin.Position); 438 Assert.AreEqual(500, cin.ReadInt32()); 439 Assert.AreEqual(3, cin.Position); 440 //Field 2: 441 tag = cin.ReadTag(); 442 Assert.AreEqual(2, tag >> 3); 443 Assert.AreEqual(4, cin.Position); 444 int childlen = cin.ReadLength(); 445 Assert.AreEqual(120, childlen); 446 Assert.AreEqual(5, cin.Position); 447 int oldlimit = cin.PushLimit((int)childlen); 448 Assert.AreEqual(5, cin.Position); 449 // Now we are reading child message 450 { 451 // Field 11: numeric value: 500 452 tag = cin.ReadTag(); 453 Assert.AreEqual(11, tag >> 3); 454 Assert.AreEqual(6, cin.Position); 455 Assert.AreEqual(500, cin.ReadInt32()); 456 Assert.AreEqual(8, cin.Position); 457 //Field 12: length delimited 120 bytes 458 tag = cin.ReadTag(); 459 Assert.AreEqual(12, tag >> 3); 460 Assert.AreEqual(9, cin.Position); 461 ByteString bstr = cin.ReadBytes(); 462 Assert.AreEqual(110, bstr.Length); 463 Assert.AreEqual((byte) 109, bstr[109]); 464 Assert.AreEqual(120, cin.Position); 465 // Field 13: fixed numeric value: 501 466 tag = cin.ReadTag(); 467 Assert.AreEqual(13, tag >> 3); 468 // ROK - Previously broken here, this returned 126 failing to account for bufferSizeAfterLimit 469 Assert.AreEqual(121, cin.Position); 470 Assert.AreEqual(501, cin.ReadSFixed32()); 471 Assert.AreEqual(125, cin.Position); 472 Assert.IsTrue(cin.IsAtEnd); 473 } 474 cin.PopLimit(oldlimit); 475 Assert.AreEqual(125, cin.Position); 476 // Field 3: fixed numeric value: 501 477 tag = cin.ReadTag(); 478 Assert.AreEqual(3, tag >> 3); 479 Assert.AreEqual(126, cin.Position); 480 Assert.AreEqual(501, cin.ReadSFixed32()); 481 Assert.AreEqual(130, cin.Position); 482 Assert.IsTrue(cin.IsAtEnd); 483 } 484 } 485 486 [Test] Dispose_DisposesUnderlyingStream()487 public void Dispose_DisposesUnderlyingStream() 488 { 489 var memoryStream = new MemoryStream(); 490 Assert.IsTrue(memoryStream.CanWrite); 491 using (var cos = new CodedOutputStream(memoryStream)) 492 { 493 cos.WriteRawBytes(new byte[] {0}); 494 Assert.AreEqual(0, memoryStream.Position); // Not flushed yet 495 } 496 Assert.AreEqual(1, memoryStream.ToArray().Length); // Flushed data from CodedOutputStream to MemoryStream 497 Assert.IsFalse(memoryStream.CanWrite); // Disposed 498 } 499 500 [Test] Dispose_WithLeaveOpen()501 public void Dispose_WithLeaveOpen() 502 { 503 var memoryStream = new MemoryStream(); 504 Assert.IsTrue(memoryStream.CanWrite); 505 using (var cos = new CodedOutputStream(memoryStream, true)) 506 { 507 cos.WriteRawBytes(new byte[] {0}); 508 Assert.AreEqual(0, memoryStream.Position); // Not flushed yet 509 } 510 Assert.AreEqual(1, memoryStream.Position); // Flushed data from CodedOutputStream to MemoryStream 511 Assert.IsTrue(memoryStream.CanWrite); // We left the stream open 512 } 513 514 [Test] Dispose_FromByteArray()515 public void Dispose_FromByteArray() 516 { 517 var stream = new CodedOutputStream(new byte[10]); 518 stream.Dispose(); 519 } 520 521 [Test] WriteString_AsciiSmall_MaxUtf8SizeExceedsBuffer()522 public void WriteString_AsciiSmall_MaxUtf8SizeExceedsBuffer() 523 { 524 var buffer = new byte[5]; 525 var output = new CodedOutputStream(buffer); 526 output.WriteString("ABC"); 527 528 output.Flush(); 529 530 // Verify written content 531 var input = new CodedInputStream(buffer); 532 Assert.AreEqual("ABC", input.ReadString()); 533 } 534 535 [Test] WriteStringsOfDifferentSizes_Ascii()536 public void WriteStringsOfDifferentSizes_Ascii() 537 { 538 for (int i = 1; i <= 1024; i++) 539 { 540 var buffer = new byte[4096]; 541 var output = new CodedOutputStream(buffer); 542 var sb = new StringBuilder(); 543 for (int j = 0; j < i; j++) 544 { 545 sb.Append((j % 10).ToString()); // incrementing numbers, repeating 546 } 547 var s = sb.ToString(); 548 output.WriteString(s); 549 550 output.Flush(); 551 552 // Verify written content 553 var input = new CodedInputStream(buffer); 554 Assert.AreEqual(s, input.ReadString()); 555 } 556 } 557 558 [Test] WriteStringsOfDifferentSizes_Unicode()559 public void WriteStringsOfDifferentSizes_Unicode() 560 { 561 for (int i = 1; i <= 1024; i++) 562 { 563 var buffer = new byte[4096]; 564 var output = new CodedOutputStream(buffer); 565 var sb = new StringBuilder(); 566 for (int j = 0; j < i; j++) 567 { 568 char c = (char)((j % 10) + 10112); 569 sb.Append(c.ToString()); // incrementing unicode numbers, repeating 570 } 571 var s = sb.ToString(); 572 output.WriteString(s); 573 574 output.Flush(); 575 576 // Verify written content 577 var input = new CodedInputStream(buffer); 578 579 Assert.AreEqual(s, input.ReadString()); 580 } 581 } 582 } 583 }