linux-packaging-mono/mcs/class/corlib/Test/System.Collections/CaseInsensitiveHashCodeProviderTest.cs

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//
// CaseInsensitiveHashCodeProviderTest
//
// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
//
using System;
using System.Collections;
using System.Globalization;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters;
using System.Runtime.Serialization.Formatters.Binary;
using System.Threading;
using NUnit.Framework;
namespace MonoTests.System.Collections
{
[TestFixture]
public class CaseInsensitiveHashCodeProviderTest
{
private CultureInfo old_culture;
[SetUp]
public void SetUp ()
{
old_culture = Thread.CurrentThread.CurrentCulture;
}
[TearDown]
public void TearDown ()
{
Thread.CurrentThread.CurrentCulture = old_culture;
}
[Test]
public void Default ()
{
CaseInsensitiveHashCodeProvider cih = new CaseInsensitiveHashCodeProvider (
CultureInfo.CurrentCulture);
int h1 = cih.GetHashCode ("Test String");
cih = CaseInsensitiveHashCodeProvider.Default;
int h2 = cih.GetHashCode ("Test String");
Assert.AreEqual (h1, h2, "#1");
Thread.CurrentThread.CurrentCulture = new CultureInfo ("en-US");
CaseInsensitiveHashCodeProvider cih1 = CaseInsensitiveHashCodeProvider.Default;
Thread.CurrentThread.CurrentCulture = new CultureInfo ("nl-BE");
CaseInsensitiveHashCodeProvider cih2 = CaseInsensitiveHashCodeProvider.Default;
Assert.IsFalse (object.ReferenceEquals (cih1, cih2), "#2");
}
[Test]
[Category ("NotDotNet")]
public void Default_Mono ()
{
// we return same instance if current culture did not change
CaseInsensitiveHashCodeProvider cih1 = CaseInsensitiveHashCodeProvider.Default;
CaseInsensitiveHashCodeProvider cih2 = CaseInsensitiveHashCodeProvider.Default;
Assert.IsTrue (object.ReferenceEquals (cih1, cih2));
}
[Test]
[Category ("NotWorking")]
public void Default_MS ()
{
// MS always returns new instance
CaseInsensitiveHashCodeProvider cih1 = CaseInsensitiveHashCodeProvider.Default;
CaseInsensitiveHashCodeProvider cih2 = CaseInsensitiveHashCodeProvider.Default;
Assert.IsFalse (object.ReferenceEquals (cih1, cih2));
}
#if NET_2_0
[Test]
public void DefaultInvariant ()
{
CaseInsensitiveHashCodeProvider cih = new CaseInsensitiveHashCodeProvider (
CultureInfo.InvariantCulture);
int h1 = cih.GetHashCode ("Test String");
cih = CaseInsensitiveHashCodeProvider.DefaultInvariant;
int h2 = cih.GetHashCode ("Test String");
Assert.AreEqual (h1, h2, "#1");
CaseInsensitiveHashCodeProvider cih1 = CaseInsensitiveHashCodeProvider.DefaultInvariant;
CaseInsensitiveHashCodeProvider cih2 = CaseInsensitiveHashCodeProvider.DefaultInvariant;
Assert.IsTrue (object.ReferenceEquals (cih1, cih2));
}
#endif
[Test]
public void HashCode ()
{
CaseInsensitiveHashCodeProvider cih = new CaseInsensitiveHashCodeProvider ();
int h1 = cih.GetHashCode ("Test String");
int h2 = cih.GetHashCode ("test string");
int h3 = cih.GetHashCode ("TEST STRING");
Assert.IsTrue (h1 == h2, "Mixed Case != lower case");
Assert.IsTrue (h1 == h3, "Mixed Case != UPPER CASE");
h1 = cih.GetHashCode ("one");
h2 = cih.GetHashCode ("another");
// Actually this is quite possible.
Assert.IsFalse (h1 == h2);
}
[Test]
public void Constructor0_Serialization ()
{
CaseInsensitiveHashCodeProvider cihcp = new CaseInsensitiveHashCodeProvider ();
BinaryFormatter bf = new BinaryFormatter ();
MemoryStream ms = new MemoryStream ();
bf.Serialize (ms, cihcp);
byte[] ser1 = ms.ToArray ();
cihcp = new CaseInsensitiveHashCodeProvider (CultureInfo.CurrentCulture);
ms = new MemoryStream ();
bf.Serialize (ms, cihcp);
byte[] ser2 = ms.ToArray ();
cihcp = CaseInsensitiveHashCodeProvider.Default;
ms = new MemoryStream ();
bf.Serialize (ms, cihcp);
byte[] ser3 = ms.ToArray ();
Assert.AreEqual (ser1, ser2, "#1");
Assert.AreEqual (ser2, ser3, "#2");
}
[Test]
public void Constructor1_Culture_Null ()
{
try {
new CaseInsensitiveHashCodeProvider ((CultureInfo) null);
Assert.Fail ("#1");
} catch (ArgumentNullException ex) {
Assert.AreEqual (typeof (ArgumentNullException), ex.GetType (), "#2");
Assert.IsNull (ex.InnerException, "#3");
Assert.IsNotNull (ex.Message, "#4");
Assert.IsNotNull (ex.ParamName, "#5");
Assert.AreEqual ("culture", ex.ParamName, "#6");
}
}
#if NET_2_0
[Test]
public void Constructor1_Serialization ()
{
CaseInsensitiveHashCodeProvider cihcp = new CaseInsensitiveHashCodeProvider (CultureInfo.InvariantCulture);
BinaryFormatter bf = new BinaryFormatter ();
MemoryStream ms = new MemoryStream ();
bf.Serialize (ms, cihcp);
byte[] ser1 = ms.ToArray ();
cihcp = CaseInsensitiveHashCodeProvider.DefaultInvariant;
ms = new MemoryStream ();
bf.Serialize (ms, cihcp);
byte[] ser2 = ms.ToArray ();
Assert.AreEqual (ser1, ser2, "#1");
}
#endif
[Test]
public void SerializationRoundtrip ()
{
CaseInsensitiveHashCodeProvider enus = new CaseInsensitiveHashCodeProvider (new CultureInfo ("en-US"));
BinaryFormatter bf = new BinaryFormatter ();
MemoryStream ms = new MemoryStream ();
bf.Serialize (ms, enus);
ms.Position = 0;
CaseInsensitiveHashCodeProvider clone = (CaseInsensitiveHashCodeProvider) bf.Deserialize (ms);
Assert.AreEqual (enus.GetHashCode (String.Empty), clone.GetHashCode (String.Empty), "GetHashCode(string)");
Assert.AreEqual (enus.GetHashCode (Int32.MinValue), clone.GetHashCode (Int32.MinValue), "GetHashCode(int)");
}
[Test]
public void Deserialize ()
{
BinaryFormatter bf = new BinaryFormatter ();
MemoryStream ms = new MemoryStream (serialized_en_us);
CaseInsensitiveHashCodeProvider enus = (CaseInsensitiveHashCodeProvider) bf.Deserialize (ms);
Assert.IsNotNull (enus, "en-US");
ms = new MemoryStream (serialized_fr_ca);
CaseInsensitiveHashCodeProvider frca = (CaseInsensitiveHashCodeProvider) bf.Deserialize (ms);
Assert.IsNotNull (frca, "fr-CA");
}
private static byte [] serialized_en_us = new byte [] {
#if NET_2_0
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#else
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#endif
};
private static byte [] serialized_fr_ca = new byte [] {
#if NET_2_0
0x00, 0x01, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x01,
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#else
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#endif
};
}
}