context: // UInt32Test.cs - NUnit Test Cases for the System.UInt32 struct
  //
  // Mario Martinez (mariom925@home.om)
  //
  // (C) Ximian, Inc.  http://www.ximian.com
  // 
  
  using NUnit.Framework;
  using System;
  using System.Globalization;
  using System.Threading;
  
  namespace MonoTests.System
  {
  
  [TestFixture]
  public class UInt32Test 
  {
  	private const UInt32 MyUInt32_1 = 42;
  	private const UInt32 MyUInt32_2 = 0;
  	private const UInt32 MyUInt32_3 = 4294967295;
  	private const string MyString1 = "42";
  	private const string MyString2 = "0";
  	private const string MyString3 = "4294967295";
  	private string[] Formats1 = {"c", "d", "e", "f", "g", "n", "p", "x" };
  	private string[] Formats2 = {"c5", "d5", "e5", "f5", "g5", "n5", "p5", "x5" };
  	private string[] Results1 = {"",
  					"0", "0.000000e+000", "0.00",
  					"0", "0.00", "0.00 %", "0"};
  	private string[] ResultsNfi1 = {NumberFormatInfo.InvariantInfo.CurrencySymbol+"0.00",
  					"0", "0.000000e+000", "0.00",
  					"0", "0.00", "0.00 %", "0"};
  	private string[] Results2 = {"",
  					"4294967295", "4.29497e+009", "4294967295.00000",
  					"4.295e+09", "4,294,967,295.00000", "429,496,729,500.00000 %", "ffffffff"};
  	private string[] ResultsNfi2 = {NumberFormatInfo.InvariantInfo.CurrencySymbol+"4,294,967,295.00000",
  					"4294967295", "4.29497e+009", "4294967295.00000",
  					"4.295e+09", "4,294,967,295.00000", "429,496,729,500.00000 %", "ffffffff"};
  	private NumberFormatInfo Nfi = NumberFormatInfo.InvariantInfo;
  	
  	private CultureInfo old_culture;
  
  	[SetUp]
  	public void SetUp () 
  	{
  		old_culture = Thread.CurrentThread.CurrentCulture;
  
  		// Set culture to en-US and don't let the user override.
  		Thread.CurrentThread.CurrentCulture = new CultureInfo ("en-US", false);
  
  		// We can't initialize this until we set the culture.
  		
  		string decimals = new String ('0', NumberFormatInfo.CurrentInfo.NumberDecimalDigits);
  		string perPattern = new string[] {"n %","n%","%n"} [NumberFormatInfo.CurrentInfo.PercentPositivePattern];
  		
  		Results1 [0] = NumberFormatInfo.CurrentInfo.CurrencySymbol + "0.00";
  		Results1 [3] = "0." + decimals;
  		Results1 [5] = "0." + decimals;
  		Results1 [6] = perPattern.Replace ("n","0.00");
  		
  		Results2 [0] = NumberFormatInfo.CurrentInfo.CurrencySymbol + "4,294,967,295.00000";
  		Results2 [6] = perPattern.Replace ("n","429,496,729,500.00000");
  	}
  
  	[TearDown]
  	public void TearDown ()
  	{
  		Thread.CurrentThread.CurrentCulture = old_culture;
  	}
  
  	[Test]
  	public void TestMinMax()
  	{
  		
  		Assert.AreEqual(UInt32.MinValue, MyUInt32_2);
  		Assert.AreEqual(UInt32.MaxValue, MyUInt32_3);
  	}
  
  	[Test]
  	public void TestCompareTo()
  	{
  		Assert.IsTrue(MyUInt32_3.CompareTo(MyUInt32_2) > 0);
  		Assert.IsTrue(MyUInt32_2.CompareTo(MyUInt32_2) == 0);
  		Assert.IsTrue(MyUInt32_1.CompareTo((UInt32)(42)) == 0);
  		Assert.IsTrue(MyUInt32_2.CompareTo(MyUInt32_3) < 0);
  		Assert.IsTrue (1 == UInt32.Parse ("1"));
  		Assert.IsTrue (1 == UInt32.Parse (" 1"));
  		Assert.IsTrue (1 == UInt32.Parse ("     1"));
  		Assert.IsTrue (1 == UInt32.Parse ("1    "));
  		Assert.IsTrue (1 == UInt32.Parse ("+1"));
  
  		try {
  			UInt32.Parse (" + 1 ");
  			Assert.Fail ("Should raise FormatException1");
  		} catch (Exception e){
  			Assert.IsTrue (typeof (FormatException) == e.GetType ());
  		}
  
  		try {
  			UInt32.Parse (" + ");
  			Assert.Fail ("Should raise FormatException");
  		} catch (Exception e){
  			Assert.IsTrue (typeof (FormatException) == e.GetType ());
  		}
  		try {
  			MyUInt32_2.CompareTo((object)(Int16)100);
  			Assert.Fail("Should raise a System.ArgumentException");
  		}
  		catch (Exception e) {
  			Assert.IsTrue(typeof(ArgumentException) == e.GetType());
  		}
  	}
  
  	[Test]
  	public void TestEquals()
  	{
  		Assert.IsTrue(MyUInt32_1.Equals(MyUInt32_1));
  		Assert.IsTrue(MyUInt32_1.Equals((object)(UInt32)(42)));
  		Assert.IsTrue(MyUInt32_1.Equals((object)(SByte)(42)) == false);
  		Assert.IsTrue(MyUInt32_1.Equals(MyUInt32_2) == false);
  	}
  
  	[Test]
  	public void TestGetHashCode()
  	{
  		try {
  			MyUInt32_1.GetHashCode();
  			MyUInt32_2.GetHashCode();
  			MyUInt32_3.GetHashCode();
  		}
  		catch {
  			Assert.Fail("GetHashCode should not raise an exception here");
  		}
  	}
  
  	[Test]
  	public void TestParse()
  	{
  		//test Parse(string s)
  		Assert.IsTrue(MyUInt32_1 == UInt32.Parse(MyString1), "Parse problem on \""+MyString1+"\"");
  		Assert.IsTrue(MyUInt32_2 == UInt32.Parse(MyString2), "Parse problem on \""+MyString2+"\"");
  		Assert.IsTrue(MyUInt32_3 == UInt32.Parse(MyString3), "Parse problem on \""+MyString3+"\"");
  		try {
  			UInt32.Parse(null);
  			Assert.Fail("Should raise a System.ArgumentNullException");
  		}
  		catch (Exception e) {
  			Assert.IsTrue(typeof(ArgumentNullException) == e.GetType(), "Did not get ArgumentNullException type");
  		}
  		try {
  			UInt32.Parse("not-a-number");
  			Assert.Fail("Should raise a System.FormatException");
  		}
  		catch (Exception e) {
  			Assert.IsTrue(typeof(FormatException) == e.GetType(), "Did not get FormatException type");
  		}
  		try {
  			// TODO: Use this after ToString() is completed. For now, hard code string that generates
  			// exception.
  			//double OverInt = (double)UInt32.MaxValue + 1;
  			//UInt32.Parse(OverInt.ToString());
  			UInt32.Parse("4294967296");
  			Assert.Fail("Should raise a System.OverflowException");
  		}
  		catch (Exception e) {
  			Assert.IsTrue(typeof(OverflowException) == e.GetType(), "Did not get OverflowException type on '"+"4294967296"+"'. Instead, got: '"+e.GetType()+"'");
  		}
  		//test Parse(string s, NumberStyles style)
  		Assert.IsTrue(42 == UInt32.Parse(" "+NumberFormatInfo.CurrentInfo.CurrencySymbol+"42 ", NumberStyles.Currency));
  		try {
  			UInt32.Parse("$42", NumberStyles.Integer);
  			Assert.Fail("Should raise a System.FormatException");
  		}
  		catch (Exception e) {
  			Assert.IsTrue(typeof(FormatException) == e.GetType());
  		}
  		//test Parse(string s, IFormatProvider provider)
  		Assert.IsTrue(42 == UInt32.Parse(" 42 ", Nfi));
  		try {
  			UInt32.Parse("%42", Nfi);
  			Assert.Fail("Should raise a System.FormatException");
  		}
  		catch (Exception e) {
  			Assert.IsTrue(typeof(FormatException) == e.GetType());
  		}
  		//test Parse(string s, NumberStyles style, IFormatProvider provider)
  		Assert.IsTrue(16 == UInt32.Parse(" 10 ", NumberStyles.HexNumber, Nfi));
  		try {
  			UInt32.Parse("$42", NumberStyles.Integer, Nfi);
  			Assert.Fail("Should raise a System.FormatException");
  		}
  		catch (Exception e) {
  			Assert.IsTrue(typeof(FormatException) == e.GetType());
  		}
  		// Pass a DateTimeFormatInfo, it is unable to format
  		// numbers, but we should not crash
  		
  		UInt32.Parse ("123", new DateTimeFormatInfo ());
  
  		Assert.AreEqual (734561, UInt32.Parse ("734561\0"), "C#43");
  		Assert.AreEqual (734561, UInt32.Parse ("734561\0\0\0    \0"), "C#44");
  		Assert.AreEqual (734561, UInt32.Parse ("734561\0\0\0    "), "C#45");
  		Assert.AreEqual (734561, UInt32.Parse ("734561\0\0\0"), "C#46");
  
  		Assert.AreEqual (0, UInt32.Parse ("0+", NumberStyles.Any), "#50");
  	}
  
  	[Test]
  	public void TestParseExponent ()
  	{
  		Assert.AreEqual (2, uint.Parse ("2E0", NumberStyles.AllowExponent), "A#1");
  		Assert.AreEqual (20, uint.Parse ("2E1", NumberStyles.AllowExponent), "A#2");
  		Assert.AreEqual (200, uint.Parse ("2E2", NumberStyles.AllowExponent), "A#3");
  		Assert.AreEqual (2000000, uint.Parse ("2E6", NumberStyles.AllowExponent), "A#4");
  		Assert.AreEqual (200, uint.Parse ("2E+2", NumberStyles.AllowExponent), "A#5");
  		Assert.AreEqual (2, uint.Parse ("2", NumberStyles.AllowExponent), "A#6");
  		Assert.AreEqual (21, uint.Parse ("2.1E1", NumberStyles.AllowDecimalPoint | NumberStyles.AllowExponent), "A#7");
  		Assert.AreEqual (520, uint.Parse (".52E3", NumberStyles.AllowDecimalPoint | NumberStyles.AllowExponent), "A#8");
  		Assert.AreEqual (32500000, uint.Parse ("32.5E6", NumberStyles.AllowDecimalPoint | NumberStyles.AllowExponent), "A#9");
  		Assert.AreEqual (890, uint.Parse ("8.9000E2", NumberStyles.AllowDecimalPoint | NumberStyles.AllowExponent), "A#10");		
  
  		try {
  			uint.Parse ("2E");
  			Assert.Fail ("B#1");
  		} catch (FormatException) {
  		}
  
  		try {
  			uint.Parse ("2E3.0", NumberStyles.AllowExponent); // decimal notation for the exponent
  			Assert.Fail ("B#2");
  		} catch (FormatException) {
  		}
  
  		try {
  			uint.Parse ("2E 2", NumberStyles.AllowExponent);
  			Assert.Fail ("B#3");
  		} catch (FormatException) {
  		}
  
  		try {
  			uint.Parse ("2E2 ", NumberStyles.AllowExponent);
  			Assert.Fail ("B#4");
  		} catch (FormatException) {
  		}
  
  		try {
  			uint.Parse ("2E66", NumberStyles.AllowExponent); // final result overflow
  			Assert.Fail ("B#5");
  		} catch (OverflowException) {
  		}
  
  		try {
  			long exponent = (long) Int32.MaxValue + 10;
  			uint.Parse ("2E" + exponent.ToString (), NumberStyles.AllowExponent);
  			Assert.Fail ("B#6");
  		} catch (OverflowException) {
  		}
  
  		try {
  			uint.Parse ("2E-1", NumberStyles.AllowExponent); // negative exponent
  			Assert.Fail ("B#7");
  		} catch (OverflowException) {
  		}
  		
  		try {
  			uint.Parse ("2 math e1", NumberStyles.AllowExponent);
  			Assert.Fail ("B#8");
  		} catch (FormatException) {
  		}
  
  		try {
  			uint.Parse ("2.09E1",  NumberStyles.AllowDecimalPoint | NumberStyles.AllowExponent);
  			Assert.Fail ("B#9");
  		} catch (OverflowException) {
  		}
  	}
  
  	[Test]
  	public void TestTryParse()
  	{
  		uint result;
  
  		Assert.AreEqual (true, UInt32.TryParse (MyString1, out result));
  		Assert.AreEqual (MyUInt32_1, result);
  		Assert.AreEqual (true, UInt32.TryParse (MyString2, out result));
  		Assert.AreEqual (MyUInt32_2, result);
  		Assert.AreEqual (true, UInt32.TryParse (MyString3, out result));
  		Assert.AreEqual (MyUInt32_3, result);
  
  		Assert.AreEqual (true, UInt32.TryParse ("1", out result));
  		Assert.AreEqual (1, result);
  		Assert.AreEqual (true, UInt32.TryParse (" 1", out result));
  		Assert.AreEqual (1, result);
  		Assert.AreEqual (true, UInt32.TryParse ("     1", out result));
  		Assert.AreEqual (1, result);
  		Assert.AreEqual (true, UInt32.TryParse ("1    ", out result));
  		Assert.AreEqual (1, result);
  		Assert.AreEqual (true, UInt32.TryParse ("+1", out result));
  		Assert.AreEqual (1, result);
  
gt: 		Assert.AreEqual (false, UInt32.TryParse ("-1", out result));