mcs/class/corlib/Test/System/Int32Test.cs

   1 // Int32Test.cs - NUnit Test Cases for the System.Int32 struct
   2 //
   3 // Mario Martinez (mariom925@home.om)
   4 //
   5 // (C) Ximian, Inc.  http://www.ximian.com
   6 //
   7
   8 using NUnit.Framework;
   9 using System;
  10 using System.Threading;
  11 using System.Globalization;
  12
  13 namespace MonoTests.System
  14 {
  15
  16 [TestFixture]
  17 public class Int32Test : Assertion
  18 {
  19         private const Int32 MyInt32_1 = -42;
  20         private const Int32 MyInt32_2 = -2147483648;
  21         private const Int32 MyInt32_3 = 2147483647;
  22         private const string MyString1 = "-42";
  23         private const string MyString2 = "-2147483648";
  24         private const string MyString3 = "2147483647";
  25         private string[] Formats1 = {"c", "d", "e", "f", "g", "n", "p", "x" };
  26         private string[] Formats2 = {"c5", "d5", "e5", "f5", "g5", "n5", "p5", "x5" };
  27         private string[] Results1 = {null,
  28                                         "-2147483648", "-2.147484e+009", "-2147483648.00",
  29                                         "-2147483648", "-2,147,483,648.00", "-214,748,364,800.00 %", "80000000"};
  30         private string[] Results2 = {null,
  31                                         "2147483647", "2.14748e+009", "2147483647.00000",
  32                                         "2.1475e+09", "2,147,483,647.00000", "214,748,364,700.00000 %", "7fffffff"};
  33         private string[] ResultsNfi1 = {"("+NumberFormatInfo.InvariantInfo.CurrencySymbol+"2,147,483,648.00)",
  34                                         "-2147483648", "-2.147484e+009", "-2147483648.00",
  35                                         "-2147483648", "-2,147,483,648.00", "-214,748,364,800.00 %", "80000000"};
  36         private string[] ResultsNfi2 = {NumberFormatInfo.InvariantInfo.CurrencySymbol+"2,147,483,647.00000",
  37                                         "2147483647", "2.14748e+009", "2147483647.00000",
  38                                         "2.1475e+09", "2,147,483,647.00000", "214,748,364,700.00000 %", "7fffffff"};
  39         private NumberFormatInfo Nfi = NumberFormatInfo.InvariantInfo;
  40
  41         private CultureInfo old_culture;
  42
  43         [TestFixtureSetUp]
  44         public void SetUp()
  45         {
  46                 old_culture = Thread.CurrentThread.CurrentCulture;
  47
  48                 // Set culture to en-US and don't let the user override.
  49                 Thread.CurrentThread.CurrentCulture = new CultureInfo ("en-US", false);
  50
  51                 // We can't initialize this until we set the culture.
  52
  53                 string decimals = new String ('0', NumberFormatInfo.CurrentInfo.NumberDecimalDigits);
  54                 string perPattern = new string[] {"n %","n%","%n"} [NumberFormatInfo.CurrentInfo.PercentPositivePattern];
  55
  56                 Results1 [0] = "("+NumberFormatInfo.CurrentInfo.CurrencySymbol+"2,147,483,648.00)";
  57                 Results1 [3] = "-2147483648." + decimals;
  58                 Results1 [5] = "-2,147,483,648." + decimals;
  59                 Results1 [6] = perPattern.Replace ("n","-214,748,364,800.00");
  60
  61                 Results2 [0] = NumberFormatInfo.CurrentInfo.CurrencySymbol+"2,147,483,647.00000";
  62                 Results2 [6] = perPattern.Replace ("n","214,748,364,700.00000");
  63         }
  64
  65         [TestFixtureTearDown]
  66         public void TearDown()
  67         {
  68                 Thread.CurrentThread.CurrentCulture = old_culture;
  69         }
  70
  71         public void TestMinMax()
  72         {
  73
  74                 AssertEquals("#A01", Int32.MinValue, MyInt32_2);
  75                 AssertEquals("#A02", Int32.MaxValue, MyInt32_3);
  76         }
  77
  78         public void TestCompareTo()
  79         {
  80                 Assert("MyInt32_3.CompareTo(MyInt32_2) > 0", MyInt32_3.CompareTo(MyInt32_2) > 0);
  81                 Assert("MyInt32_2.CompareTo(MyInt32_2) == 0", MyInt32_2.CompareTo(MyInt32_2) == 0);
  82                 Assert("MyInt32_1.CompareTo((Int32)(-42)) == 0", MyInt32_1.CompareTo((object)(Int32)(-42)) == 0);
  83                 Assert("MyInt32_2.CompareTo(MyInt32_3) < 0", MyInt32_2.CompareTo(MyInt32_3) < 0);
  84                 try {
  85                         MyInt32_2.CompareTo((object)(Int16)100);
  86                         Fail("Should raise a System.ArgumentException");
  87                 }
  88                 catch (Exception e) {
  89                         Assert("typeof(ArgumentException) == e.GetType()", typeof(ArgumentException) == e.GetType());
  90                 }
  91         }
  92
  93         public void TestEquals()
  94         {
  95                 Assert ("#B01", MyInt32_1.Equals (MyInt32_1));
  96                 Assert ("#B02", MyInt32_1.Equals ((Int32)(-42)));
  97                 Assert ("#B03", MyInt32_1.Equals ((object)(SByte)(-42)) == false);
  98                 Assert ("#B04", MyInt32_1.Equals (MyInt32_2) == false);
  99         }
 100
 101         public void TestGetHashCode()
 102         {
 103                 try {
 104                         MyInt32_1.GetHashCode();
 105                         MyInt32_2.GetHashCode();
 106                         MyInt32_3.GetHashCode();
 107                 }
 108                 catch {
 109                         Fail("GetHashCode should not raise an exception here");
 110                 }
 111         }
 112
 113         public void TestParse()
 114         {
 115                 //test Parse(string s)
 116                 AssertEquals ("#C01", MyInt32_1, Int32.Parse (MyString1));
 117                 AssertEquals ("#C02", MyInt32_2, Int32.Parse (MyString2));
 118                 AssertEquals ("#C03", MyInt32_3, Int32.Parse (MyString3));
 119
 120                 AssertEquals ("#C04", 1, Int32.Parse ("1"));
 121                 AssertEquals ("#C05", 1, Int32.Parse (" 1"));
 122                 AssertEquals ("#C06", 1, Int32.Parse ("     1"));
 123                 AssertEquals ("#C07", 1, Int32.Parse ("1    "));
 124                 AssertEquals ("#C08", 1, Int32.Parse ("+1"));
 125                 AssertEquals ("#C09", -1, Int32.Parse ("-1"));
 126                 AssertEquals ("#C10", -1, Int32.Parse ("  -1"));
 127                 AssertEquals ("#C11", -1, Int32.Parse ("  -1  "));
 128                 AssertEquals ("#C12", -1, Int32.Parse ("  -1  "));
 129
 130                 try {
 131                         Int32.Parse(null);
 132                         Fail ("#C13: Should raise a System.ArgumentNullException");
 133                 }
 134                 catch (Exception e) {
 135                         Assert ("#C14", typeof (ArgumentNullException) == e.GetType());
 136                 }
 137                 try {
 138                         Int32.Parse("not-a-number");
 139                         Fail ("#C15: Should raise a System.FormatException");
 140                 }
 141                 catch (Exception e) {
 142                         Assert ("#C16", typeof (FormatException) == e.GetType());
 143                 }
 144                 try {
 145                         double OverInt = (double)Int32.MaxValue + 1;
 146                         Int32.Parse(OverInt.ToString());
 147                         Fail ("#C17: Should raise a System.OverflowException");
 148                 }
 149                 catch (Exception e) {
 150                         AssertEquals ("#C18", typeof (OverflowException), e.GetType());
 151                 }
 152                 //test Parse(string s, NumberStyles style)
 153                 AssertEquals ("#C19", 42, Int32.Parse (" $42 ", NumberStyles.Currency));
 154                 try {
 155                         Int32.Parse("$42", NumberStyles.Integer);
 156                         Fail ("#C20: Should raise a System.FormatException");
 157                 }
 158                 catch (Exception e) {
 159                         Assert ("#C21", typeof (FormatException) == e.GetType());
 160                 }
 161                 //test Parse(string s, IFormatProvider provider)
 162                 AssertEquals ("#C22", -42, Int32.Parse (" -42 ", Nfi));
 163                 try {
 164                         Int32.Parse("%42", Nfi);
 165                         Fail ("#C23: Should raise a System.FormatException");
 166                 }
 167                 catch (Exception e) {
 168                         Assert ("#C24", typeof (FormatException) == e.GetType());
 169                 }
 170                 //test Parse(string s, NumberStyles style, IFormatProvider provider)
 171                 AssertEquals ("#C25", 16, Int32.Parse (" 10 ", NumberStyles.HexNumber, Nfi));
 172                 try {
 173                         Int32.Parse("$42", NumberStyles.Integer, Nfi);
 174                         Fail ("#C26: Should raise a System.FormatException");
 175                 }
 176                 catch (Exception e) {
 177                         Assert("#C27", typeof (FormatException) == e.GetType());
 178                 }
 179
 180                 try {
 181                         Int32.Parse (" - 1 ");
 182                         Fail ("#C28: Should raise FormatException");
 183                 } catch (Exception e){
 184                         Assert ("#C29", typeof (FormatException) == e.GetType ());
 185                 }
 186
 187                 try {
 188                         Int32.Parse (" - ");
 189                         Fail ("#C30: Should raise FormatException");
 190                 } catch (Exception e){
 191                         Assert ("#C31", typeof (FormatException) == e.GetType ());
 192                 }
 193                 AssertEquals ("#C32", -123, Int32.Parse ("ffffff85", NumberStyles.HexNumber, Nfi));
 194                 try {
 195                         Int32.Parse ("100000000", NumberStyles.HexNumber, Nfi);
 196                         Fail ("#C33: Should raise OverflowException");
 197                 } catch (Exception e){
 198                         Assert ("#C34", typeof (OverflowException) == e.GetType ());
 199                 }
 200                 try {
 201                         Int32.Parse ("2147483648");
 202                         Fail ("C#35: should raise OverflowException");
 203                 } catch (Exception e) {
 204                         Assert ("C#36", typeof (OverflowException) == e.GetType ());
 205                 }
 206                 try {
 207                         Int32.Parse ("2147483648", CultureInfo.InvariantCulture);
 208                         Fail ("C#37: should raise OverflowException");
 209                 } catch (Exception e) {
 210                         Assert ("C#38", typeof (OverflowException) == e.GetType ());
 211                 }
 212
 213                 try {
 214                         Int32.Parse (null);
 215                         Fail ("C#39: Should raise an ArgumentNullException");
 216                 } catch (Exception e){
 217                         Assert ("C#40", typeof (ArgumentNullException) == e.GetType ());
 218                 }
 219
 220                 try {
 221                         Int32.Parse ("123", (NumberStyles) 60000);
 222                         Fail ("C#41 Should raise an ArgumentException");
 223                 } catch (Exception e){
 224                         Assert ("C#42", typeof (ArgumentException) == e.GetType ());
 225                 }
 226
 227                 // Pass a DateTimeFormatInfo, it is unable to format
 228                 // numbers, but we should not crash
 229
 230                 Int32.Parse ("123", new DateTimeFormatInfo ());
 231         }
 232
 233 #if NET_2_0
 234         public void TestTryParse()
 235         {
 236                 int result;
 237
 238                 AssertEquals (true, Int32.TryParse (MyString1, out result));
 239                 AssertEquals (MyInt32_1, result);
 240                 AssertEquals (true, Int32.TryParse (MyString2, out result));
 241                 AssertEquals (MyInt32_2, result);
 242                 AssertEquals (true, Int32.TryParse (MyString3, out result));
 243                 AssertEquals (MyInt32_3, result);
 244
 245                 AssertEquals (true, Int32.TryParse ("1", out result));
 246                 AssertEquals (1, result);
 247                 AssertEquals (true, Int32.TryParse (" 1", out result));
 248                 AssertEquals (1, result);
 249                 AssertEquals (true, Int32.TryParse ("     1", out result));
 250                 AssertEquals (1, result);
 251                 AssertEquals (true, Int32.TryParse ("1    ", out result));
 252                 AssertEquals (1, result);
 253                 AssertEquals (true, Int32.TryParse ("+1", out result));
 254                 AssertEquals (1, result);
 255                 AssertEquals (true, Int32.TryParse ("-1", out result));
 256                 AssertEquals (-1, result);
 257                 AssertEquals (true, Int32.TryParse ("  -1", out result));
 258                 AssertEquals (-1, result);
 259                 AssertEquals (true, Int32.TryParse ("  -1  ", out result));
 260                 AssertEquals (-1, result);
 261                 AssertEquals (true, Int32.TryParse ("  -1  ", out result));
 262                 AssertEquals (-1, result);
 263
 264                 result = 1;
 265                 AssertEquals (false, Int32.TryParse (null, out result));
 266                 AssertEquals (0, result);
 267
 268                 AssertEquals (false, Int32.TryParse ("not-a-number", out result));
 269
 270                 double OverInt = (double)Int32.MaxValue + 1;
 271                 AssertEquals (false, Int32.TryParse (OverInt.ToString (), out result));
 272
 273                 AssertEquals (false, Int32.TryParse ("$42", NumberStyles.Integer, null, out result));
 274                 AssertEquals (false, Int32.TryParse ("%42", NumberStyles.Integer, Nfi, out result));
 275                 AssertEquals (false, Int32.TryParse ("$42", NumberStyles.Integer, Nfi, out result));
 276                 AssertEquals (false, Int32.TryParse (" - 1 ", out result));
 277                 AssertEquals (false, Int32.TryParse (" - ", out result));
 278                 AssertEquals (false, Int32.TryParse ("100000000", NumberStyles.HexNumber, Nfi, out result));
 279                 AssertEquals (false, Int32.TryParse ("10000000000", out result));
 280                 AssertEquals (false, Int32.TryParse ("-10000000000", out result));
 281                 AssertEquals (true, Int32.TryParse ("7fffffff", NumberStyles.HexNumber, Nfi, out result));
 282                 AssertEquals (Int32.MaxValue, result);
 283                 AssertEquals (true, Int32.TryParse ("80000000", NumberStyles.HexNumber, Nfi, out result));
 284                 AssertEquals (Int32.MinValue, result);
 285                 AssertEquals (true, Int32.TryParse ("ffffffff", NumberStyles.HexNumber, Nfi, out result));
 286                 AssertEquals (-1, result);
 287                 AssertEquals (false, Int32.TryParse ("100000000", NumberStyles.HexNumber, Nfi, out result));
 288         }
 289 #endif
 290
 291         public void TestToString()
 292         {
 293                 //test ToString()
 294                 AssertEquals ("#D01", MyString1, MyInt32_1.ToString ());
 295                 AssertEquals ("#D02", MyString2, MyInt32_2.ToString ());
 296                 AssertEquals ("#D03", MyString3, MyInt32_3.ToString ());
 297
 298                 //test ToString(string format, IFormatProvider provider);
 299                 for (int i=0; i < Formats1.Length; i++) {
 300                         AssertEquals ("#D04(" + i + "," + Formats1 [i] + ")",
 301                                       ResultsNfi1 [i], MyInt32_2.ToString (Formats1 [i], Nfi));
 302                         AssertEquals ("#D05(" + i + "," + Formats2 [i] + ")",
 303                                       ResultsNfi2 [i], MyInt32_3.ToString (Formats2 [i], Nfi));
 304                 }
 305
 306                 //test ToString(string format)
 307                 for (int i=0; i < Formats1.Length; i++) {
 308                         AssertEquals ("#D06(" + i + ")", Results1 [i],
 309                                       MyInt32_2.ToString(Formats1[i]));
 310                         AssertEquals ("#D07(" + i + ")", Results2 [i],
 311                                       MyInt32_3.ToString(Formats2[i]));
 312                 }
 313
 314                 try {
 315                         MyInt32_1.ToString("z");
 316                         Fail ("#D08: Should raise a System.FormatException");
 317                 }
 318                 catch (Exception e) {
 319                         Assert ("#D09", typeof (FormatException) == e.GetType());
 320                 }
 321         }
 322
 323         public void TestCustomToString()
 324         {
 325                 int i = 123;
 326
 327                 AssertEquals ("Custom format string 00000", "00123", i.ToString ("00000"));
 328                 AssertEquals ("Custom format string ####", "123", i.ToString ("####"));
 329                 AssertEquals ("Custom format string ####", "0123", i.ToString ("0###"));
 330                 AssertEquals ("Custom format string ####", "0123", i.ToString ("#0###"));
 331                 AssertEquals ("Custom format string ####", "000123", i.ToString ("0#0###"));
 332         }
 333
 334         [Test]
 335         public void TestSections ()
 336         {
 337                 int hundred = 100;
 338                 int neghund = -100;
 339
 340                 Assert ("#TS1",  hundred.ToString ("#;#") == "100");
 341                 Assert ("#TS2",  hundred.ToString ("-#;#") == "-100");
 342                 Assert ("#TS3",  neghund.ToString ("#;#") == "100");
 343                 Assert ("#TS3",  neghund.ToString ("#;-#") == "-100");
 344         }
 345
 346         [Test]
 347         public void ToString_Defaults ()
 348         {
 349                 Int32 i = 254;
 350                 // everything defaults to "G"
 351                 string def = i.ToString ("G");
 352                 AssertEquals ("ToString()", def, i.ToString ());
 353                 AssertEquals ("ToString((IFormatProvider)null)", def, i.ToString ((IFormatProvider)null));
 354                 AssertEquals ("ToString((string)null)", def, i.ToString ((string)null));
 355                 AssertEquals ("ToString(empty)", def, i.ToString (String.Empty));
 356                 AssertEquals ("ToString(null,null)", def, i.ToString (null, null));
 357                 AssertEquals ("ToString(empty,null)", def, i.ToString (String.Empty, null));
 358
 359                 AssertEquals ("ToString(G)", "254", def);
 360         }
 361 }
 362
 363 }