mcs/class/corlib/Test/System/Int16Test.cs

   1 // Int16Test.cs - NUnit Test Cases for the System.Int16 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 Int16Test
  18 {
  19         private const Int16 MyInt16_1 = -42;
  20         private const Int16 MyInt16_2 = -32768;
  21         private const Int16 MyInt16_3 = 32767;
  22         private const string MyString1 = "-42";
  23         private const string MyString2 = "-32768";
  24         private const string MyString3 = "32767";
  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, "-32768", "-3.276800e+004", "-32768.00",
  28                                           "-32768", "-32,768.00", "-3,276,800.00 %", "8000"};
  29         private string[] Results2 = {null, "32767", "3.27670e+004", "32767.00000",
  30                                           "32767", "32,767.00000", "3,276,700.00000 %", "07fff"};
  31         private string[] ResultsNfi1 = {"("+NumberFormatInfo.InvariantInfo.CurrencySymbol+"32,768.00)", "-32768", "-3.276800e+004", "-32768.00",
  32                                           "-32768", "-32,768.00", "-3,276,800.00 %", "8000"};
  33         private string[] ResultsNfi2 = {NumberFormatInfo.InvariantInfo.CurrencySymbol+"32,767.00000", "32767", "3.27670e+004", "32767.00000",
  34                                           "32767", "32,767.00000", "3,276,700.00000 %", "07fff"};
  35         private NumberFormatInfo Nfi = NumberFormatInfo.InvariantInfo;
  36
  37         private CultureInfo old_culture;
  38
  39         [TestFixtureSetUp]
  40         public void SetUpFixture ()
  41         {
  42                 old_culture = Thread.CurrentThread.CurrentCulture;
  43
  44                 // Set culture to en-US and don't let the user override.
  45                 Thread.CurrentThread.CurrentCulture = new CultureInfo ("en-US", false);
  46
  47                 // We can't initialize this until we set the culture.
  48                 Results1 [0] = "("+NumberFormatInfo.CurrentInfo.CurrencySymbol+"32,768.00)";
  49                 Results2 [0] = NumberFormatInfo.CurrentInfo.CurrencySymbol+"32,767.00000";
  50         }
  51
  52         [SetUp]
  53         public void Setup ()
  54         {
  55                 Thread.CurrentThread.CurrentCulture = new CultureInfo ("en-US", false);
  56         }
  57
  58         [TestFixtureTearDown]
  59         public void TearDown ()
  60         {
  61                 Thread.CurrentThread.CurrentCulture = old_culture;
  62         }
  63
  64         [Test]
  65         public void TestMinMax()
  66         {
  67                 Assert.AreEqual(Int16.MinValue, MyInt16_2);
  68                 Assert.AreEqual(Int16.MaxValue, MyInt16_3);
  69         }
  70
  71         [Test]
  72         public void TestCompareTo()
  73         {
  74                 Assert.IsTrue(MyInt16_3.CompareTo(MyInt16_2) > 0);
  75                 Assert.IsTrue(MyInt16_2.CompareTo(MyInt16_2) == 0);
  76                 Assert.IsTrue(MyInt16_1.CompareTo((Int16)(-42)) == 0);
  77                 Assert.IsTrue(MyInt16_2.CompareTo(MyInt16_3) < 0);
  78                 try {
  79                         MyInt16_2.CompareTo((object)100);
  80                         Assert.Fail ("Should raise a System.ArgumentException");
  81                 }
  82                 catch (Exception e) {
  83                         Assert.IsTrue(typeof(ArgumentException) == e.GetType());
  84                 }
  85         }
  86
  87         [Test]
  88         public void TestEquals()
  89         {
  90                 Assert.IsTrue(MyInt16_1.Equals(MyInt16_1));
  91                 Assert.IsTrue(MyInt16_1.Equals((object)(Int16)(-42)));
  92                 Assert.IsTrue(MyInt16_1.Equals((object)(SByte)(-42)) == false);
  93                 Assert.IsTrue(MyInt16_1.Equals(MyInt16_2) == false);
  94         }
  95
  96         [Test]
  97         public void TestGetHashCode()
  98         {
  99                 try {
 100                         MyInt16_1.GetHashCode();
 101                         MyInt16_2.GetHashCode();
 102                         MyInt16_3.GetHashCode();
 103                 }
 104                 catch {
 105                         Assert.Fail ("GetHashCode should not raise an exception here");
 106                 }
 107         }
 108
 109         [Test]
 110         public void TestParse()
 111         {
 112                 //test Parse(string s)
 113                 Assert.IsTrue(MyInt16_1 == Int16.Parse(MyString1));
 114                 Assert.IsTrue(MyInt16_2 == Int16.Parse(MyString2));
 115                 Assert.IsTrue(MyInt16_3 == Int16.Parse(MyString3));
 116                 try {
 117                         Int16.Parse(null);
 118                         Assert.Fail ("Should raise a System.ArgumentNullException");
 119                 }
 120                 catch (Exception e) {
 121                         Assert.IsTrue(typeof(ArgumentNullException) == e.GetType());
 122                 }
 123                 try {
 124                         Int16.Parse("not-a-number");
 125                         Assert.Fail ("Should raise a System.FormatException");
 126                 }
 127                 catch (Exception e) {
 128                         Assert.IsTrue(typeof(FormatException) == e.GetType());
 129                 }
 130                 try {
 131                         int OverInt = Int16.MaxValue + 1;
 132                         Int16.Parse(OverInt.ToString());
 133                         Assert.Fail ("Should raise a System.OverflowException");
 134                 }
 135                 catch (Exception e) {
 136                         Assert.IsTrue(typeof(OverflowException) == e.GetType());
 137                 }
 138                 //test Parse(string s, NumberStyles style)
 139                 Assert.IsTrue(42 == Int16.Parse(" $42 ", NumberStyles.Currency));
 140                 try {
 141                         Int16.Parse("$42", NumberStyles.Integer);
 142                         Assert.Fail ("Should raise a System.FormatException");
 143                 }
 144                 catch (Exception e) {
 145                         Assert.IsTrue(typeof(FormatException) == e.GetType());
 146                 }
 147                 //test Parse(string s, IFormatProvider provider)
 148                 Assert.IsTrue(-42 == Int16.Parse(" -42 ", Nfi));
 149                 try {
 150                         Int16.Parse("%42", Nfi);
 151                         Assert.Fail ("Should raise a System.FormatException");
 152                 }
 153                 catch (Exception e) {
 154                         Assert.IsTrue(typeof(FormatException) == e.GetType());
 155                 }
 156                 //test Parse(string s, NumberStyles style, IFormatProvider provider)
 157                 Assert.IsTrue(16 == Int16.Parse(" 10 ", NumberStyles.HexNumber, Nfi));
 158                 try {
 159                         Int16.Parse("$42", NumberStyles.Integer, Nfi);
 160                         Assert.Fail ("Should raise a System.FormatException");
 161                 }
 162                 catch (Exception e) {
 163                         Assert.IsTrue(typeof(FormatException) == e.GetType());
 164                 }
 165
 166                 Assert.AreEqual (7345, Int16.Parse ("7345\0"), "#1");
 167                 Assert.AreEqual (7345, Int16.Parse ("7345\0\0\0    \0"), "#2");
 168                 Assert.AreEqual (7345, Int16.Parse ("7345\0\0\0    "), "#3");
 169                 Assert.AreEqual (7345, Int16.Parse ("7345\0\0\0"), "#4");
 170
 171                 Assert.AreEqual (0, Int16.Parse ("0+", NumberStyles.Any), "#5");
 172         }
 173
 174         [Test]
 175         public void TestParseExponent ()
 176         {
 177                 Assert.AreEqual (2, Int16.Parse ("2E0", NumberStyles.AllowExponent), "A#1");
 178                 Assert.AreEqual (20, Int16.Parse ("2E1", NumberStyles.AllowExponent), "A#2");
 179                 Assert.AreEqual (200, Int16.Parse ("2E2", NumberStyles.AllowExponent), "A#3");
 180                 Assert.AreEqual (200, Int16.Parse ("2E+2", NumberStyles.AllowExponent), "A#4");
 181                 Assert.AreEqual (2, Int16.Parse ("2", NumberStyles.AllowExponent), "A#5");
 182
 183                 try {
 184                         Int16.Parse ("2E");
 185                         Assert.Fail ("B#1");
 186                 } catch (FormatException) {
 187                 }
 188
 189                 try {
 190                         Int16.Parse ("2E3.0", NumberStyles.AllowExponent); // decimal notation for the exponent
 191                         Assert.Fail ("B#2");
 192                 } catch (FormatException) {
 193                 }
 194
 195                 try {
 196                         Int16.Parse ("2E 2", NumberStyles.AllowExponent);
 197                         Assert.Fail ("B#3");
 198                 } catch (FormatException) {
 199                 }
 200
 201                 try {
 202                         Int16.Parse ("2E2 ", NumberStyles.AllowExponent);
 203                         Assert.Fail ("B#4");
 204                 } catch (FormatException) {
 205                 }
 206
 207                 try {
 208                         Int16.Parse ("2E66", NumberStyles.AllowExponent); // final result overflow
 209                         Assert.Fail ("B#5");
 210                 } catch (OverflowException) {
 211                 }
 212
 213                 try {
 214                         long exponent = (long) Int32.MaxValue + 10;
 215                         Int16.Parse ("2E" + exponent.ToString (), NumberStyles.AllowExponent);
 216                         Assert.Fail ("B#6");
 217                 } catch (OverflowException) {
 218                 }
 219
 220                 try {
 221                         Int16.Parse ("2E-1", NumberStyles.AllowExponent); // negative exponent
 222                         Assert.Fail ("B#7");
 223                 } catch (OverflowException) {
 224                 }
 225
 226                 try {
 227                         Int16.Parse ("2 math e1", NumberStyles.AllowExponent);
 228                         Assert.Fail ("B#8");
 229                 } catch (FormatException) {
 230                 }
 231         }
 232
 233         [Test]
 234         public void Parse_MinMax ()
 235         {
 236                 Assert.AreEqual (Int16.MinValue, Int16.Parse ("-32768"), "MinValue");
 237                 Assert.AreEqual (Int16.MaxValue, Int16.Parse ("32767"), "MaxValue");
 238                 Assert.AreEqual (-1, Int16.Parse ("FFFF", NumberStyles.HexNumber), "MaxHex");
 239         }
 240
 241         [Test]
 242         public void TestToString()
 243         {
 244                 //test ToString()
 245                 Assert.IsTrue(String.Compare(MyString1, MyInt16_1.ToString()) == 0);
 246                 Assert.IsTrue(String.Compare(MyString2, MyInt16_2.ToString()) == 0);
 247                 Assert.IsTrue(String.Compare(MyString3, MyInt16_3.ToString()) == 0);
 248                 //test ToString(string format)
 249                 /*
 250                 TODO: These tests are culture sensitive.  Need to find a way to determine the culture
 251                         of the system to decide the correct expected result.
 252                 for (int i=0; i < Formats1.Length; i++) {
 253                         Assert.IsTrue(String.Compare(Results1[i], MyInt16_2.ToString(Formats1[i])) == 0);
 254                         Assert.IsTrue(String.Compare(Results2[i], MyInt16_3.ToString(Formats2[i])) == 0);
 255                 }
 256                 */
 257                 //test ToString(string format, IFormatProvider provider);
 258                 for (int i=0; i < Formats1.Length; i++) {
 259                         Assert.IsTrue(String.Compare(ResultsNfi1[i], MyInt16_2.ToString(Formats1[i], Nfi)) == 0, "i="+i+", ResultsNfi1[i]="+ResultsNfi1[i]+", MyInt16_2.ToString(Formats1[i]="+Formats1[i]+"): Expected "+ResultsNfi1[i]+" but got "+MyInt16_2.ToString(Formats1[i], Nfi));
 260                         Assert.IsTrue(String.Compare(ResultsNfi2[i], MyInt16_3.ToString(Formats2[i], Nfi)) == 0, "i="+i+", ResultsNfi2[i]="+ResultsNfi2[i]+", MyInt16_3.ToString(Formats2[i]="+Formats2[i]+"): Expected "+ResultsNfi2[i]+" but got "+MyInt16_3.ToString(Formats2[i], Nfi));
 261                 }
 262                 try {
 263                         MyInt16_1.ToString("z");
 264                         Assert.Fail ("Should raise a System.FormatException");
 265                 }
 266                 catch (Exception e) {
 267                         Assert.IsTrue(typeof(FormatException) == e.GetType());
 268                 }
 269         }
 270
 271         [Test]
 272         public void ToString_Defaults ()
 273         {
 274                 Int16 i = 254;
 275                 // everything defaults to "G"
 276                 string def = i.ToString ("G");
 277                 Assert.AreEqual (def, i.ToString (), "ToString()");
 278                 Assert.AreEqual (def, i.ToString ((IFormatProvider)null), "ToString((IFormatProvider)null)");
 279                 Assert.AreEqual (def, i.ToString ((string)null), "ToString((string)null)");
 280                 Assert.AreEqual (def, i.ToString (String.Empty), "ToString(empty)");
 281                 Assert.AreEqual (def, i.ToString (null, null), "ToString(null,null)");
 282                 Assert.AreEqual (def, i.ToString (String.Empty, null), "ToString(empty,null)");
 283
 284                 Assert.AreEqual ("254", def, "ToString(G)");
 285         }
 286
 287         [Test]
 288         public void Bug3677 ()
 289         {
 290                 Assert.AreEqual (-7197, short.Parse("E3E3", NumberStyles.HexNumber), "HexNumber");
 291         }
 292 }
 293
 294 }