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.AreEqual(65535, MyInt16_3.CompareTo(MyInt16_2), "#1");
  75                 Assert.AreEqual(0, MyInt16_2.CompareTo(MyInt16_2), "#2");
  76                 Assert.AreEqual(0, MyInt16_1.CompareTo((Int16)(-42)), "#3");
  77                 Assert.AreEqual(-65535, MyInt16_2.CompareTo(MyInt16_3), "#4");
  78                 try {
  79                         MyInt16_2.CompareTo((object)100);
  80                         Assert.Fail ("Should raise a System.ArgumentException");
  81                 } catch (ArgumentException e) {
  82                 }
  83         }
  84
  85         [Test]
  86         public void TestEquals()
  87         {
  88                 Assert.IsTrue(MyInt16_1.Equals(MyInt16_1));
  89                 Assert.IsTrue(MyInt16_1.Equals((object)(Int16)(-42)));
  90                 Assert.IsTrue(MyInt16_1.Equals((object)(SByte)(-42)) == false);
  91                 Assert.IsTrue(MyInt16_1.Equals(MyInt16_2) == false);
  92         }
  93
  94         [Test]
  95         public void TestGetHashCode()
  96         {
  97                 try {
  98                         MyInt16_1.GetHashCode();
  99                         MyInt16_2.GetHashCode();
 100                         MyInt16_3.GetHashCode();
 101                 }
 102                 catch {
 103                         Assert.Fail ("GetHashCode should not raise an exception here");
 104                 }
 105         }
 106
 107         [Test]
 108         public void TestParse()
 109         {
 110                 //test Parse(string s)
 111                 Assert.IsTrue(MyInt16_1 == Int16.Parse(MyString1));
 112                 Assert.IsTrue(MyInt16_2 == Int16.Parse(MyString2));
 113                 Assert.IsTrue(MyInt16_3 == Int16.Parse(MyString3));
 114                 try {
 115                         Int16.Parse(null);
 116                         Assert.Fail ("Should raise a System.ArgumentNullException");
 117                 }
 118                 catch (Exception e) {
 119                         Assert.IsTrue(typeof(ArgumentNullException) == e.GetType());
 120                 }
 121                 try {
 122                         Int16.Parse("not-a-number");
 123                         Assert.Fail ("Should raise a System.FormatException");
 124                 }
 125                 catch (Exception e) {
 126                         Assert.IsTrue(typeof(FormatException) == e.GetType());
 127                 }
 128                 try {
 129                         int OverInt = Int16.MaxValue + 1;
 130                         Int16.Parse(OverInt.ToString());
 131                         Assert.Fail ("Should raise a System.OverflowException");
 132                 }
 133                 catch (Exception e) {
 134                         Assert.IsTrue(typeof(OverflowException) == e.GetType());
 135                 }
 136                 //test Parse(string s, NumberStyles style)
 137                 Assert.IsTrue(42 == Int16.Parse(" $42 ", NumberStyles.Currency));
 138                 try {
 139                         Int16.Parse("$42", NumberStyles.Integer);
 140                         Assert.Fail ("Should raise a System.FormatException");
 141                 }
 142                 catch (Exception e) {
 143                         Assert.IsTrue(typeof(FormatException) == e.GetType());
 144                 }
 145                 //test Parse(string s, IFormatProvider provider)
 146                 Assert.IsTrue(-42 == Int16.Parse(" -42 ", Nfi));
 147                 try {
 148                         Int16.Parse("%42", Nfi);
 149                         Assert.Fail ("Should raise a System.FormatException");
 150                 }
 151                 catch (Exception e) {
 152                         Assert.IsTrue(typeof(FormatException) == e.GetType());
 153                 }
 154                 //test Parse(string s, NumberStyles style, IFormatProvider provider)
 155                 Assert.IsTrue(16 == Int16.Parse(" 10 ", NumberStyles.HexNumber, Nfi));
 156                 try {
 157                         Int16.Parse("$42", NumberStyles.Integer, Nfi);
 158                         Assert.Fail ("Should raise a System.FormatException");
 159                 }
 160                 catch (Exception e) {
 161                         Assert.IsTrue(typeof(FormatException) == e.GetType());
 162                 }
 163
 164                 Assert.AreEqual (7345, Int16.Parse ("7345\0"), "#1");
 165                 Assert.AreEqual (7345, Int16.Parse ("7345\0\0\0    \0"), "#2");
 166                 Assert.AreEqual (7345, Int16.Parse ("7345\0\0\0    "), "#3");
 167                 Assert.AreEqual (7345, Int16.Parse ("7345\0\0\0"), "#4");
 168
 169                 Assert.AreEqual (0, Int16.Parse ("0+", NumberStyles.Any), "#5");
 170         }
 171
 172         [Test]
 173         public void TestParseExponent ()
 174         {
 175                 Assert.AreEqual (2, Int16.Parse ("2E0", NumberStyles.AllowExponent), "A#1");
 176                 Assert.AreEqual (20, Int16.Parse ("2E1", NumberStyles.AllowExponent), "A#2");
 177                 Assert.AreEqual (200, Int16.Parse ("2E2", NumberStyles.AllowExponent), "A#3");
 178                 Assert.AreEqual (200, Int16.Parse ("2E+2", NumberStyles.AllowExponent), "A#4");
 179                 Assert.AreEqual (2, Int16.Parse ("2", NumberStyles.AllowExponent), "A#5");
 180
 181                 try {
 182                         Int16.Parse ("2E");
 183                         Assert.Fail ("B#1");
 184                 } catch (FormatException) {
 185                 }
 186
 187                 try {
 188                         Int16.Parse ("2E3.0", NumberStyles.AllowExponent); // decimal notation for the exponent
 189                         Assert.Fail ("B#2");
 190                 } catch (FormatException) {
 191                 }
 192
 193                 try {
 194                         Int16.Parse ("2E 2", NumberStyles.AllowExponent);
 195                         Assert.Fail ("B#3");
 196                 } catch (FormatException) {
 197                 }
 198
 199                 try {
 200                         Int16.Parse ("2E2 ", NumberStyles.AllowExponent);
 201                         Assert.Fail ("B#4");
 202                 } catch (FormatException) {
 203                 }
 204
 205                 try {
 206                         Int16.Parse ("2E66", NumberStyles.AllowExponent); // final result overflow
 207                         Assert.Fail ("B#5");
 208                 } catch (OverflowException) {
 209                 }
 210
 211                 try {
 212                         long exponent = (long) Int32.MaxValue + 10;
 213                         Int16.Parse ("2E" + exponent.ToString (), NumberStyles.AllowExponent);
 214                         Assert.Fail ("B#6");
 215                 } catch (OverflowException) {
 216                 }
 217
 218                 try {
 219                         Int16.Parse ("2E-1", NumberStyles.AllowExponent); // negative exponent
 220                         Assert.Fail ("B#7");
 221                 } catch (OverflowException) {
 222                 }
 223
 224                 try {
 225                         Int16.Parse ("2 math e1", NumberStyles.AllowExponent);
 226                         Assert.Fail ("B#8");
 227                 } catch (FormatException) {
 228                 }
 229         }
 230
 231         [Test]
 232         public void Parse_MinMax ()
 233         {
 234                 Assert.AreEqual (Int16.MinValue, Int16.Parse ("-32768"), "MinValue");
 235                 Assert.AreEqual (Int16.MaxValue, Int16.Parse ("32767"), "MaxValue");
 236                 Assert.AreEqual (-1, Int16.Parse ("FFFF", NumberStyles.HexNumber), "MaxHex");
 237         }
 238
 239         [Test]
 240         public void TestToString()
 241         {
 242                 //test ToString()
 243                 Assert.IsTrue(String.Compare(MyString1, MyInt16_1.ToString()) == 0);
 244                 Assert.IsTrue(String.Compare(MyString2, MyInt16_2.ToString()) == 0);
 245                 Assert.IsTrue(String.Compare(MyString3, MyInt16_3.ToString()) == 0);
 246                 //test ToString(string format)
 247                 /*
 248                 TODO: These tests are culture sensitive.  Need to find a way to determine the culture
 249                         of the system to decide the correct expected result.
 250                 for (int i=0; i < Formats1.Length; i++) {
 251                         Assert.IsTrue(String.Compare(Results1[i], MyInt16_2.ToString(Formats1[i])) == 0);
 252                         Assert.IsTrue(String.Compare(Results2[i], MyInt16_3.ToString(Formats2[i])) == 0);
 253                 }
 254                 */
 255                 //test ToString(string format, IFormatProvider provider);
 256                 for (int i=0; i < Formats1.Length; i++) {
 257                         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));
 258                         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));
 259                 }
 260                 try {
 261                         MyInt16_1.ToString("z");
 262                         Assert.Fail ("Should raise a System.FormatException");
 263                 }
 264                 catch (Exception e) {
 265                         Assert.IsTrue(typeof(FormatException) == e.GetType());
 266                 }
 267         }
 268
 269         [Test]
 270         public void ToString_Defaults ()
 271         {
 272                 Int16 i = 254;
 273                 // everything defaults to "G"
 274                 string def = i.ToString ("G");
 275                 Assert.AreEqual (def, i.ToString (), "ToString()");
 276                 Assert.AreEqual (def, i.ToString ((IFormatProvider)null), "ToString((IFormatProvider)null)");
 277                 Assert.AreEqual (def, i.ToString ((string)null), "ToString((string)null)");
 278                 Assert.AreEqual (def, i.ToString (String.Empty), "ToString(empty)");
 279                 Assert.AreEqual (def, i.ToString (null, null), "ToString(null,null)");
 280                 Assert.AreEqual (def, i.ToString (String.Empty, null), "ToString(empty,null)");
 281
 282                 Assert.AreEqual ("254", def, "ToString(G)");
 283         }
 284
 285         [Test]
 286         public void Bug3677 ()
 287         {
 288                 Assert.AreEqual (-7197, short.Parse("E3E3", NumberStyles.HexNumber), "HexNumber");
 289         }
 290 }
 291
 292 }