mcs/class/corlib/Test/System.IO/BinaryWriterTest.cs

   1 //
   2 // System.IO.StringWriter
   3 //
   4 // Authors:
   5 //      Ville Palo (vi64pa@kolumbus.fi)
   6 //
   7 // (C) 2003 Ville Palo
   8 //
   9
  10 using NUnit.Framework;
  11 using System.IO;
  12 using System.Text;
  13 using System;
  14
  15 namespace MonoTests.System.IO {
  16
  17 [TestFixture]
  18 public class BinaryWriterTest : Assertion {
  19
  20
  21         string TempFolder = Path.Combine (Path.GetTempPath (), "MonoTests.System.IO.Tests");
  22
  23         [SetUp]
  24         protected void SetUp() {
  25                 if (Directory.Exists (TempFolder))
  26                         Directory.Delete (TempFolder, true);
  27                 Directory.CreateDirectory (TempFolder);
  28         }
  29
  30         [TearDown]
  31         public void TearDown()
  32         {
  33                 if (Directory.Exists (TempFolder))
  34                         Directory.Delete (TempFolder, true);
  35         }
  36
  37         [Test]
  38         public void Ctor ()
  39         {
  40                 MemoryStream stream = new MemoryStream ();
  41                 BinaryWriter writer = new BinaryWriter (stream);
  42                 AssertEquals ("test#01", true, writer.BaseStream.CanRead);
  43                 AssertEquals ("test#02", true, writer.BaseStream.CanSeek);
  44                 AssertEquals ("test#03", true, writer.BaseStream.CanWrite);
  45
  46                 writer = new BinaryWriter (stream, new ASCIIEncoding ());
  47                 AssertEquals ("test#04", true, writer.BaseStream.CanRead);
  48                 AssertEquals ("test#05", true, writer.BaseStream.CanSeek);
  49                 AssertEquals ("test#06", true, writer.BaseStream.CanWrite);
  50
  51         }
  52
  53         /// <summary>
  54         /// Throws an exception if stream is null
  55         /// </summary>
  56         [Test]
  57         [ExpectedException(typeof(ArgumentNullException))]
  58         public void CtorNullExceptionStream ()
  59         {
  60                 BinaryWriter reader = new BinaryWriter (null);
  61         }
  62
  63         /// <summary>
  64         /// Throws an exception if encoding is null
  65         /// </summary>
  66         [Test]
  67         [ExpectedException(typeof(ArgumentNullException))]
  68         public void CtorNullExceptionStreamEncoding ()
  69         {
  70                 MemoryStream stream = new MemoryStream ();
  71                 BinaryWriter reader = new BinaryWriter (stream, null);
  72         }
  73
  74         /// <summary>
  75         /// Throws an exception if stream is closed
  76         /// </summary>
  77         [Test]
  78         [ExpectedException(typeof(ArgumentException))]
  79         public void CtorExceptionStreamClosed ()
  80         {
  81                 MemoryStream stream = new MemoryStream ();
  82                 stream.Close ();
  83                 BinaryWriter writer = new BinaryWriter (stream);
  84         }
  85
  86         /// <summary>
  87         /// Throws an exception if stream does not support writing
  88         /// </summary>
  89         [Test]
  90         [ExpectedException(typeof(ArgumentException))]
  91         public void CtorArgumentExceptionStreamCannotWrite ()
  92         {
  93                 string path = TempFolder + "/BinaryWriterTest.1";
  94                 DeleteFile (path);
  95                 FileStream stream = null;
  96                 BinaryWriter reader = null;
  97
  98                 try {
  99                         stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Read);
 100                         reader = new BinaryWriter (stream);
 101                 } finally {
 102                         if (reader != null)
 103                                 reader.Close ();
 104                         if (stream != null)
 105                                 stream.Close ();
 106                         DeleteFile (path);
 107                 }
 108         }
 109
 110         [Test]
 111         public void Encoding ()
 112         {
 113                 MemoryStream stream = new MemoryStream ();
 114                 BinaryWriter writer = new BinaryWriter (stream);
 115                 writer.Write ("t*st");
 116
 117                 byte [] bytes = stream.GetBuffer ();
 118                 AssertEquals ("test#01", 4, bytes [0]);
 119                 AssertEquals ("test#02", 116, bytes [1]);
 120                 AssertEquals ("test#03", 42, bytes [2]);
 121                 AssertEquals ("test#04", 115, bytes [3]);
 122                 AssertEquals ("test#05", 116, bytes [4]);
 123                 AssertEquals ("test#06", 0, bytes [5]);
 124
 125                 stream = new MemoryStream ();
 126                 writer = new BinaryWriter (stream, new UnicodeEncoding ());
 127                 writer.Write ("t*st");
 128
 129                 bytes = stream.GetBuffer ();
 130                 AssertEquals ("test#07", 8, bytes [0]);
 131                 AssertEquals ("test#08", 116, bytes [1]);
 132                 AssertEquals ("test#09", 0, bytes [2]);
 133                 AssertEquals ("test#10", 42, bytes [3]);
 134                 AssertEquals ("test#11", 0, bytes [4]);
 135                 AssertEquals ("test#12", 115, bytes [5]);
 136                 AssertEquals ("test#13", 0, bytes [6]);
 137                 AssertEquals ("test#14", 116, bytes [7]);
 138                 AssertEquals ("test#15", 0, bytes [8]);
 139
 140                 stream = new MemoryStream ();
 141                 writer = new BinaryWriter (stream, new UTF7Encoding ());
 142                 writer.Write ("t*st");
 143
 144                 bytes = stream.GetBuffer ();
 145                 AssertEquals ("test#16", 8, bytes [0]);
 146                 AssertEquals ("test#17", 116, bytes [1]);
 147                 AssertEquals ("test#18", 43, bytes [2]);
 148                 AssertEquals ("test#19", 65, bytes [3]);
 149                 AssertEquals ("test#21", 67, bytes [4]);
 150                 AssertEquals ("test#22", 111, bytes [5]);
 151                 AssertEquals ("test#23", 45, bytes [6]);
 152                 AssertEquals ("test#24", 115, bytes [7]);
 153                 AssertEquals ("test#25", 116, bytes [8]);
 154                 AssertEquals ("test#26", 0, bytes [9]);
 155                 AssertEquals ("test#27", 0, bytes [10]);
 156
 157                 stream = new MemoryStream ();
 158                 writer = new BinaryWriter (stream, new ASCIIEncoding ());
 159                 writer.Write ("t*st");
 160                 bytes = stream.GetBuffer ();
 161                 AssertEquals ("test#28", 4, bytes [0]);
 162                 AssertEquals ("test#29", 116, bytes [1]);
 163                 AssertEquals ("test#30", 42, bytes [2]);
 164                 AssertEquals ("test#31", 115, bytes [3]);
 165                 AssertEquals ("test#32", 116, bytes [4]);
 166                 AssertEquals ("test#33", 0, bytes [5]);
 167         }
 168
 169         [Test]
 170         [ExpectedException(typeof(ObjectDisposedException))]
 171         public void Close1 ()
 172         {
 173                 MemoryStream stream = new MemoryStream ();
 174                 BinaryWriter writer = new BinaryWriter (stream, new ASCIIEncoding ());
 175                 writer.Close ();
 176                 writer.Write ("Test");
 177         }
 178
 179         [Test]
 180         public void Close2 ()
 181         {
 182                 MemoryStream stream = new MemoryStream ();
 183                 BinaryWriter writer = new BinaryWriter (stream, new ASCIIEncoding ());
 184                 writer.Close ();
 185                 writer.Flush ();
 186                 stream.Flush ();
 187         }
 188
 189         [Test]
 190         [ExpectedException(typeof(ObjectDisposedException))]
 191         public void Close3 ()
 192         {
 193                 MemoryStream stream = new MemoryStream ();
 194                 BinaryWriter writer = new BinaryWriter (stream, new ASCIIEncoding ());
 195                 writer.Close ();
 196                 writer.Seek (1, SeekOrigin.Begin);
 197         }
 198
 199         [Test]
 200         public void Close4 ()
 201         {
 202                 MemoryStream stream = new MemoryStream ();
 203                 BinaryWriter writer = new BinaryWriter (stream, new ASCIIEncoding ());
 204                 writer.Close ();
 205                 AssertEquals ("test#01", false, writer.BaseStream.CanRead);
 206                 AssertEquals ("test#01", false, writer.BaseStream.CanWrite);
 207                 AssertEquals ("test#01", false, writer.BaseStream.CanSeek);
 208         }
 209
 210         [Test]
 211         public void Seek ()
 212         {
 213                 MemoryStream stream = new MemoryStream ();
 214                 BinaryWriter writer = new BinaryWriter (stream, new ASCIIEncoding ());
 215
 216                 writer.Write ("Test");
 217                 writer.Seek (2, SeekOrigin.Begin);
 218                 writer.Write ("-");
 219                 writer.Seek (400, SeekOrigin.Begin);
 220                 writer.Write ("-");
 221                 writer.Seek (-394, SeekOrigin.End);
 222                 writer.Write ("-");
 223                 writer.Seek (-2, SeekOrigin.Current);
 224                 writer.Write ("-");
 225
 226                 byte [] bytes = stream.GetBuffer ();
 227                 AssertEquals ("test#01", 512, bytes.Length);
 228                 AssertEquals ("test#02", 4, bytes [0]);
 229                 AssertEquals ("test#03", 84, bytes [1]);
 230                 AssertEquals ("test#04", 1, bytes [2]);
 231                 AssertEquals ("test#05", 45, bytes [3]);
 232                 AssertEquals ("test#06", 116, bytes [4]);
 233                 AssertEquals ("test#07", 0, bytes [5]);
 234                 AssertEquals ("test#08", 0, bytes [6]);
 235                 AssertEquals ("test#09", 0, bytes [7]);
 236                 AssertEquals ("test#10", 1, bytes [8]);
 237                 AssertEquals ("test#11", 45, bytes [9]);
 238                 AssertEquals ("test#12", 0, bytes [10]);
 239                 AssertEquals ("test#13", 0, bytes [11]);
 240                 AssertEquals ("test#14", 0, bytes [12]);
 241                 AssertEquals ("test#15", 1, bytes [400]);
 242         }
 243
 244         [Test]
 245         [ExpectedException(typeof(IOException))]
 246         public void SeekException ()
 247         {
 248                 MemoryStream stream = new MemoryStream ();
 249                 BinaryWriter writer = new BinaryWriter (stream);
 250
 251                 writer.Write ("Test");
 252                 writer.Seek (-12, SeekOrigin.Begin);
 253         }
 254
 255         [Test]
 256         public void WriteCharArray ()
 257         {
 258                 MemoryStream stream = new MemoryStream ();
 259                 BinaryWriter writer = new BinaryWriter (stream);
 260
 261                 writer.Write (new char [] {'m', 'o', 'n', 'o', ':', ':'});
 262                 writer.Write (new char [] {':', ':', 'O', 'N', 'O', 'M'});
 263
 264                 byte [] bytes = stream.GetBuffer ();
 265
 266                 AssertEquals ("test#01", 256, bytes.Length);
 267                 AssertEquals ("test#02", 109, bytes [0]);
 268                 AssertEquals ("test#03", 111, bytes [1]);
 269                 AssertEquals ("test#04", 110, bytes [2]);
 270                 AssertEquals ("test#05", 111, bytes [3]);
 271                 AssertEquals ("test#06", 58, bytes [4]);
 272                 AssertEquals ("test#07", 58, bytes [5]);
 273                 AssertEquals ("test#08", 58, bytes [6]);
 274                 AssertEquals ("test#09", 58, bytes [7]);
 275                 AssertEquals ("test#10", 79, bytes [8]);
 276                 AssertEquals ("test#11", 78, bytes [9]);
 277                 AssertEquals ("test#12", 79, bytes [10]);
 278                 AssertEquals ("test#13", 77, bytes [11]);
 279                 AssertEquals ("test#14", 0, bytes [12]);
 280                 AssertEquals ("test#15", 0, bytes [13]);
 281         }
 282
 283         [Test]
 284         public void WriteByteArray ()
 285         {
 286                 MemoryStream stream = new MemoryStream ();
 287                 BinaryWriter writer = new BinaryWriter (stream);
 288
 289                 writer.Write (new byte [] {1, 2, 3, 4, 5, 6});
 290                 writer.Write (new byte [] {6, 5, 4, 3, 2, 1});
 291
 292                 byte [] bytes = stream.GetBuffer ();
 293                 AssertEquals ("test#01", 256, bytes.Length);
 294                 AssertEquals ("test#02", 1, bytes [0]);
 295                 AssertEquals ("test#03", 2, bytes [1]);
 296                 AssertEquals ("test#04", 3, bytes [2]);
 297                 AssertEquals ("test#05", 4, bytes [3]);
 298                 AssertEquals ("test#06", 5, bytes [4]);
 299                 AssertEquals ("test#07", 6, bytes [5]);
 300                 AssertEquals ("test#08", 6, bytes [6]);
 301                 AssertEquals ("test#09", 5, bytes [7]);
 302                 AssertEquals ("test#10", 4, bytes [8]);
 303                 AssertEquals ("test#11", 3, bytes [9]);
 304                 AssertEquals ("test#12", 2, bytes [10]);
 305                 AssertEquals ("test#13", 1, bytes [11]);
 306                 AssertEquals ("test#14", 0, bytes [12]);
 307                 AssertEquals ("test#15", 0, bytes [13]);
 308
 309         }
 310
 311         [Test]
 312         public void WriteInt ()
 313         {
 314                 short s = 64;
 315                 int i = 64646464;
 316                 long l = 9999999999999;
 317
 318                 MemoryStream stream = new MemoryStream ();
 319                 BinaryWriter writer = new BinaryWriter (stream);
 320                 writer.Write (s);
 321                 byte [] bytes;
 322                 bytes = stream.GetBuffer ();
 323                 AssertEquals ("test#01", 256, bytes.Length);
 324                 AssertEquals ("test#02", 64, bytes [0]);
 325                 AssertEquals ("test#03", 0, bytes [1]);
 326
 327                 writer.Write (i);
 328                 bytes = stream.GetBuffer ();
 329                 AssertEquals ("test#04", 256, bytes.Length);
 330                 AssertEquals ("test#05", 64, bytes [0]);
 331                 AssertEquals ("test#06", 0, bytes [1]);
 332                 AssertEquals ("test#07", 64, bytes [2]);
 333                 AssertEquals ("test#08", 109, bytes [3]);
 334                 AssertEquals ("test#09", 218, bytes [4]);
 335                 AssertEquals ("test#10", 3, bytes [5]);
 336                 AssertEquals ("test#11", 0, bytes [6]);
 337
 338                 writer.Write (l);
 339                 bytes = stream.GetBuffer ();
 340                 AssertEquals ("test#12", 256, bytes.Length);
 341                 AssertEquals ("test#13", 255, bytes [6]);
 342                 AssertEquals ("test#14", 159, bytes [7]);
 343                 AssertEquals ("test#15", 114, bytes [8]);
 344                 AssertEquals ("test#16", 78, bytes [9]);
 345                 AssertEquals ("test#17", 24, bytes [10]);
 346                 AssertEquals ("test#18", 9, bytes [11]);
 347                 AssertEquals ("test#19", 0, bytes [12]);
 348         }
 349
 350         [Test]
 351         public void WriteDecimal ()
 352         {
 353                 MemoryStream stream = new MemoryStream ();
 354                 BinaryWriter writer = new BinaryWriter (stream);
 355
 356                 decimal d1 = 19932143214312.32M;
 357                 decimal d2 = -8995034512332157M;
 358
 359                 writer.Write (d1);
 360                 writer.Write (d2);
 361                 byte [] bytes = stream.GetBuffer ();
 362
 363                 AssertEquals ("test#01", 256, bytes.Length);
 364                 AssertEquals ("test#02", 192, bytes [0]);
 365                 AssertEquals ("test#03", 18, bytes [1]);
 366                 AssertEquals ("test#04", 151, bytes [2]);
 367                 AssertEquals ("test#05", 95, bytes [3]);
 368                 AssertEquals ("test#06", 209, bytes [4]);
 369                 AssertEquals ("test#07", 20, bytes [5]);
 370                 AssertEquals ("test#08", 7, bytes [6]);
 371                 AssertEquals ("test#09", 0, bytes [7]);
 372                 AssertEquals ("test#10", 0, bytes [8]);
 373                 AssertEquals ("test#11", 0, bytes [9]);
 374                 AssertEquals ("test#12", 0, bytes [10]);
 375                 AssertEquals ("test#13", 0, bytes [11]);
 376                 AssertEquals ("test#14", 0, bytes [12]);
 377                 AssertEquals ("test#15", 0, bytes [13]);
 378                 AssertEquals ("test#16", 2, bytes [14]);
 379                 AssertEquals ("test#17", 0, bytes [15]);
 380                 AssertEquals ("test#18", 125, bytes [16]);
 381                 AssertEquals ("test#19", 149, bytes [17]);
 382                 AssertEquals ("test#20", 217, bytes [18]);
 383                 AssertEquals ("test#21", 172, bytes [19]);
 384                 AssertEquals ("test#22", 239, bytes [20]);
 385                 AssertEquals ("test#23", 244, bytes [21]);
 386                 AssertEquals ("test#24", 31, bytes [22]);
 387                 AssertEquals ("test#25", 0, bytes [23]);
 388                 AssertEquals ("test#26", 0, bytes [24]);
 389                 AssertEquals ("test#27", 0, bytes [25]);
 390                 AssertEquals ("test#28", 0, bytes [26]);
 391                 AssertEquals ("test#29", 0, bytes [27]);
 392                 AssertEquals ("test#30", 0, bytes [28]);
 393                 AssertEquals ("test#31", 0, bytes [29]);
 394                 AssertEquals ("test#32", 0, bytes [30]);
 395                 AssertEquals ("test#33", 128, bytes [31]);
 396                 AssertEquals ("test#34", 0, bytes [32]);
 397                 AssertEquals ("test#35", 0, bytes [33]);
 398                 AssertEquals ("test#36", 0, bytes [34]);
 399                 AssertEquals ("test#37", 0, bytes [35]);
 400                 AssertEquals ("test#38", 0, bytes [36]);
 401                 AssertEquals ("test#39", 0, bytes [37]);
 402                 AssertEquals ("test#40", 0, bytes [38]);
 403                 AssertEquals ("test#41", 0, bytes [39]);
 404                 AssertEquals ("test#42", 0, bytes [40]);
 405                 AssertEquals ("test#43", 0, bytes [41]);
 406                 AssertEquals ("test#44", 0, bytes [42]);
 407                 AssertEquals ("test#45", 0, bytes [43]);
 408                 AssertEquals ("test#46", 0, bytes [44]);
 409                 AssertEquals ("test#47", 0, bytes [45]);
 410                 AssertEquals ("test#48", 0, bytes [46]);
 411         }
 412
 413         [Test]
 414         public void WriteFloat ()
 415         {
 416                 MemoryStream stream = new MemoryStream ();
 417                 BinaryWriter writer = new BinaryWriter (stream);
 418                 float f1 = 1.543E+10F;
 419                 float f2 = -9.6534E-6f;
 420                 writer.Write (f1);
 421                 writer.Write (f2);
 422
 423                 byte [] bytes = stream.GetBuffer ();
 424                 AssertEquals ("test#01", 256, bytes.Length);
 425                 AssertEquals ("test#02", 199, bytes [0]);
 426                 AssertEquals ("test#03", 236, bytes [1]);
 427                 AssertEquals ("test#04", 101, bytes [2]);
 428                 AssertEquals ("test#05", 80, bytes [3]);
 429                 AssertEquals ("test#06", 10, bytes [4]);
 430                 AssertEquals ("test#07", 245, bytes [5]);
 431                 AssertEquals ("test#08", 33, bytes [6]);
 432                 AssertEquals ("test#09", 183, bytes [7]);
 433                 AssertEquals ("test#10", 0, bytes [8]);
 434                 AssertEquals ("test#11", 0, bytes [9]);
 435         }
 436
 437         [Test]
 438         public void WriteDouble ()
 439         {
 440                 MemoryStream stream = new MemoryStream ();
 441                 BinaryWriter writer = new BinaryWriter (stream);
 442                 double d1 = 1.543E+100;
 443                 double d2 = -9.6534E-129;
 444                 writer.Write (d1);
 445                 writer.Write (d2);
 446
 447                 byte [] bytes = stream.GetBuffer ();
 448                 AssertEquals ("test#01", 256, bytes.Length);
 449                 AssertEquals ("test#02", 49, bytes [0]);
 450                 AssertEquals ("test#03", 69, bytes [1]);
 451                 AssertEquals ("test#04", 15, bytes [2]);
 452                 AssertEquals ("test#05", 157, bytes [3]);
 453                 AssertEquals ("test#06", 211, bytes [4]);
 454                 AssertEquals ("test#07", 55, bytes [5]);
 455                 AssertEquals ("test#08", 188, bytes [6]);
 456                 AssertEquals ("test#09", 84, bytes [7]);
 457                 AssertEquals ("test#10", 76, bytes [8]);
 458                 AssertEquals ("test#11", 59, bytes [9]);
 459                 AssertEquals ("test#12", 59, bytes [10]);
 460                 AssertEquals ("test#13", 60, bytes [11]);
 461                 AssertEquals ("test#14", 4, bytes [12]);
 462                 AssertEquals ("test#15", 196, bytes [13]);
 463                 AssertEquals ("test#16", 90, bytes [14]);
 464                 AssertEquals ("test#17", 165, bytes [15]);
 465                 AssertEquals ("test#18", 0, bytes [16]);
 466         }
 467
 468         [Test]
 469         public void WriteByteAndChar ()
 470         {
 471                 byte b1 = 12;
 472                 byte b2 = 64;
 473                 char c1 = '-';
 474                 char c2 = 'M';
 475                 MemoryStream stream = new MemoryStream ();
 476                 BinaryWriter writer = new BinaryWriter (stream);
 477                 writer.Write (b1);
 478                 writer.Write (c1);
 479                 writer.Write (b2);
 480                 writer.Write (c2);
 481
 482                 byte [] bytes = stream.GetBuffer ();
 483                 AssertEquals ("test#01", 256, bytes.Length);
 484                 AssertEquals ("test#02", 12, bytes [0]);
 485                 AssertEquals ("test#03", 45, bytes [1]);
 486                 AssertEquals ("test#04", 64, bytes [2]);
 487                 AssertEquals ("test#05", 77, bytes [3]);
 488                 AssertEquals ("test#06", 0, bytes [4]);
 489         }
 490
 491         [Test]
 492         public void WriteString ()
 493         {
 494                 MemoryStream stream = new MemoryStream ();
 495                 BinaryWriter writer = new BinaryWriter (stream);
 496                 string s1 = "abc";
 497                 string s2 = "DeF\n";
 498                 writer.Write (s1);
 499                 writer.Write (s2);
 500
 501                 byte [] bytes = stream.GetBuffer ();
 502                 AssertEquals ("test#01", 256, bytes.Length);
 503                 AssertEquals ("test#02", 3, bytes [0]);
 504                 AssertEquals ("test#03", 97, bytes [1]);
 505                 AssertEquals ("test#04", 98, bytes [2]);
 506                 AssertEquals ("test#05", 99, bytes [3]);
 507                 AssertEquals ("test#06", 4, bytes [4]);
 508                 AssertEquals ("test#07", 68, bytes [5]);
 509                 AssertEquals ("test#08", 101, bytes [6]);
 510                 AssertEquals ("test#09", 70, bytes [7]);
 511                 AssertEquals ("test#10", 10, bytes [8]);
 512                 AssertEquals ("test#11", 0, bytes [9]);
 513         }
 514
 515         private void DeleteFile (string path)
 516         {
 517                 if (File.Exists (path))
 518                         File.Delete (path);
 519         }
 520 }
 521
 522 }
 523