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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Globalization;
using Xunit;
namespace System.Collections.Tests
{
public static class CaseInsensitiveComparerTests
{
[Theory]
[InlineData("hello", "HELLO", 0)]
[InlineData("hello", "hello", 0)]
[InlineData("HELLO", "HELLO", 0)]
[InlineData("hello", "goodbye", 1)]
[InlineData("hello", null, 1)]
[InlineData(null, "hello", -1)]
[InlineData(5, 5, 0)]
[InlineData(10, 5, 1)]
[InlineData(5, 10, -1)]
[InlineData(5, null, 1)]
[InlineData(null, 5, -1)]
[InlineData(null, null, 0)]
public static void Ctor_Empty_Compare(object a, object b, int expected)
{
CaseInsensitiveComparer comparer = new CaseInsensitiveComparer();
Assert.Equal(expected, Math.Sign(comparer.Compare(a, b)));
}
[Theory]
[InlineData("hello", "HELLO", 0)]
[InlineData("hello", "hello", 0)]
[InlineData("HELLO", "HELLO", 0)]
[InlineData("hello", "goodbye", 1)]
[InlineData("hello", null, 1)]
[InlineData(null, "hello", -1)]
[InlineData(5, 5, 0)]
[InlineData(10, 5, 1)]
[InlineData(5, 10, -1)]
[InlineData(5, null, 1)]
[InlineData(null, 5, -1)]
[InlineData(null, null, 0)]
public static void Ctor_CultureInfo_Compare(object a, object b, int expected)
{
var cultureNames = new string[]
{
"cs-CZ","da-DK","de-DE","el-GR","en-US",
"es-ES","fi-FI","fr-FR","hu-HU","it-IT",
"ja-JP","ko-KR","nb-NO","nl-NL","pl-PL",
"pt-BR","pt-PT","ru-RU","sv-SE","tr-TR",
"zh-CN","zh-HK","zh-TW"
};
foreach (string cultureName in cultureNames)
{
CultureInfo culture;
try
{
culture = new CultureInfo(cultureName);
}
catch (CultureNotFoundException)
{
continue;
}
var comparer = new CaseInsensitiveComparer(culture);
Assert.Equal(expected, Math.Sign(comparer.Compare(a, b)));
}
}
[Fact]
public static void Ctor_CultureInfo_Compare_TurkishI()
{
var cultureNames = new string[]
{
"cs-CZ","da-DK","de-DE","el-GR","en-US",
"es-ES","fi-FI","fr-FR","hu-HU","it-IT",
"ja-JP","ko-KR","nb-NO","nl-NL","pl-PL",
"pt-BR","pt-PT","ru-RU","sv-SE","tr-TR",
"zh-CN","zh-HK","zh-TW"
};
foreach (string cultureName in cultureNames)
{
CultureInfo culture;
try
{
culture = new CultureInfo(cultureName);
}
catch (CultureNotFoundException)
{
continue;
}
var comparer = new CaseInsensitiveComparer(culture);
// Turkish has lower-case and upper-case version of the dotted "i", so the upper case of "i" (U+0069) isn't "I" (U+0049)
// but rather "İ" (U+0130)
if (culture.Name == "tr-TR")
{
Assert.Equal(1, comparer.Compare("file", "FILE"));
}
else
{
Assert.Equal(0, comparer.Compare("file", "FILE"));
}
}
}
[Fact]
public static void Ctor_CultureInfo_NullCulture_ThrowsArgumentNullException()
{
Assert.Throws<ArgumentNullException>("culture", () => new CaseInsensitiveComparer(null)); // Culture is null
}
[Theory]
[InlineData("hello", "HELLO", 0)]
[InlineData("hello", "hello", 0)]
[InlineData("HELLO", "HELLO", 0)]
[InlineData("hello", "goodbye", 1)]
[InlineData("hello", null, 1)]
[InlineData(null, "hello", -1)]
[InlineData("file", "FILE", 0)] // Turkey's comparing system is ignored as this is invariant
[InlineData(5, 5, 0)]
[InlineData(10, 5, 1)]
[InlineData(5, 10, -1)]
[InlineData(5, null, 1)]
[InlineData(null, 5, -1)]
[InlineData(null, null, 0)]
public static void DefaultInvariant_Compare(object a, object b, int expected)
{
var cultureNames = new string[]
{
"cs-CZ","da-DK","de-DE","el-GR","en-US",
"es-ES","fi-FI","fr-FR","hu-HU","it-IT",
"ja-JP","ko-KR","nb-NO","nl-NL","pl-PL",
"pt-BR","pt-PT","ru-RU","sv-SE","tr-TR",
"zh-CN","zh-HK","zh-TW"
};
CultureInfo culture1 = CultureInfo.DefaultThreadCurrentCulture;
CultureInfo culture2 = CultureInfo.DefaultThreadCurrentCulture;
foreach (string cultureName in cultureNames)
{
CultureInfo culture;
try
{
culture = new CultureInfo(cultureName);
}
catch (CultureNotFoundException)
{
continue;
}
// Set current culture
CultureInfo.DefaultThreadCurrentCulture = culture;
CultureInfo.DefaultThreadCurrentUICulture = culture;
// All cultures should sort the same way, irrespective of the thread's culture
CaseInsensitiveComparer defaultInvComparer = CaseInsensitiveComparer.DefaultInvariant;
Assert.Equal(expected, Math.Sign(defaultInvComparer.Compare(a, b)));
}
CultureInfo.DefaultThreadCurrentCulture = culture1;
CultureInfo.DefaultThreadCurrentUICulture = culture2;
}
[Theory]
[InlineData("hello", "HELLO", 0)]
[InlineData("hello", "hello", 0)]
[InlineData("HELLO", "HELLO", 0)]
[InlineData("hello", "goodbye", 1)]
[InlineData("hello", null, 1)]
[InlineData(null, "hello", -1)]
[InlineData(5, 5, 0)]
[InlineData(10, 5, 1)]
[InlineData(5, 10, -1)]
[InlineData(5, null, 1)]
[InlineData(null, 5, -1)]
[InlineData(null, null, 0)]
public static void Default_Compare(object a, object b, int expected)
{
Assert.Equal(expected, Math.Sign(CaseInsensitiveComparer.Default.Compare(a, b)));
}
[Fact]
public static void Default_Compare_TurkishI()
{
// Turkish has lower-case and upper-case version of the dotted "i", so the upper case of "i" (U+0069) isn't "I" (U+0049)
// but rather "İ" (U+0130)
CultureInfo culture = CultureInfo.CurrentCulture;
CaseInsensitiveComparer comparer = CaseInsensitiveComparer.Default;
if (culture.Name == "tr-TR")
{
Assert.Equal(1, comparer.Compare("file", "FILE"));
}
else
{
Assert.Equal(0, comparer.Compare("file", "FILE"));
}
}
}
}
|
