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CaseInsensitiveHashCodeProviderTests.cs
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CaseInsensitiveHashCodeProviderTests.cs
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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.
using System.Globalization;
using System.Diagnostics;
using Microsoft.DotNet.RemoteExecutor;
using Xunit;
using System.Tests;
#pragma warning disable 618 // obsolete types
namespace System.Collections.Tests
{
public class CaseInsensitiveHashCodeProviderTests
{
[Theory]
[InlineData("hello", "HELLO", true)]
[InlineData("hello", "hello", true)]
[InlineData("HELLO", "HELLO", true)]
[InlineData("hello", "goodbye", false)]
[InlineData(5, 5, true)]
[InlineData(10, 5, false)]
[InlineData(5, 10, false)]
public void Ctor_Empty_GetHashCodeCompare(object a, object b, bool expected)
{
var provider = new CaseInsensitiveHashCodeProvider();
Assert.Equal(provider.GetHashCode(a), provider.GetHashCode(a));
Assert.Equal(provider.GetHashCode(b), provider.GetHashCode(b));
Assert.Equal(expected, provider.GetHashCode(a) == provider.GetHashCode(b));
}
[Theory]
[InlineData("hello", "HELLO", true)]
[InlineData("hello", "hello", true)]
[InlineData("HELLO", "HELLO", true)]
[InlineData("hello", "goodbye", false)]
[InlineData(5, 5, true)]
[InlineData(10, 5, false)]
[InlineData(5, 10, false)]
public void Ctor_Empty_ChangeCurrentCulture_GetHashCodeCompare(object a, object b, bool expected)
{
var cultureNames = Helpers.TestCultureNames;
foreach (string cultureName in cultureNames)
{
CultureInfo newCulture;
try
{
newCulture = new CultureInfo(cultureName);
}
catch (CultureNotFoundException)
{
continue;
}
using (new ThreadCultureChange(newCulture))
{
var provider = new CaseInsensitiveHashCodeProvider();
Assert.Equal(provider.GetHashCode(a), provider.GetHashCode(a));
Assert.Equal(provider.GetHashCode(b), provider.GetHashCode(b));
Assert.Equal(expected, provider.GetHashCode(a) == provider.GetHashCode(b));
}
}
}
[Theory]
[InlineData("hello", "HELLO", true)]
[InlineData("hello", "hello", true)]
[InlineData("HELLO", "HELLO", true)]
[InlineData("hello", "goodbye", false)]
[InlineData(5, 5, true)]
[InlineData(10, 5, false)]
[InlineData(5, 10, false)]
public void Ctor_CultureInfo_ChangeCurrentCulture_GetHashCodeCompare(object a, object b, bool expected)
{
var cultureNames = Helpers.TestCultureNames;
foreach (string cultureName in cultureNames)
{
CultureInfo culture;
try
{
culture = new CultureInfo(cultureName);
}
catch (CultureNotFoundException)
{
continue;
}
var provider = new CaseInsensitiveHashCodeProvider(culture);
Assert.Equal(provider.GetHashCode(a), provider.GetHashCode(a));
Assert.Equal(provider.GetHashCode(b), provider.GetHashCode(b));
Assert.Equal(expected, provider.GetHashCode(a) == provider.GetHashCode(b));
}
}
[Fact]
[ActiveIssue("https://github.com/dotnet/runtime/issues/37069", TestPlatforms.Android | TestPlatforms.LinuxBionic)]
[ActiveIssue("https://github.com/dotnet/runtime/issues/95338", typeof(PlatformDetection), nameof(PlatformDetection.IsHybridGlobalizationOnApplePlatform))]
[ActiveIssue("https://github.com/dotnet/runtime/issues/95503", typeof(PlatformDetection), nameof(PlatformDetection.IsHybridGlobalizationOnBrowser))]
public void Ctor_CultureInfo_GetHashCodeCompare_TurkishI()
{
var cultureNames = Helpers.TestCultureNames;
foreach (string cultureName in cultureNames)
{
CultureInfo culture;
try
{
culture = new CultureInfo(cultureName);
}
catch (CultureNotFoundException)
{
continue;
}
var provider = new CaseInsensitiveHashCodeProvider(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 U+0130.
Assert.Equal(
culture.Name != "tr-TR",
provider.GetHashCode("file") == provider.GetHashCode("FILE"));
}
}
[Fact]
public void Ctor_CultureInfo_NullCulture_ThrowsArgumentNullException()
{
AssertExtensions.Throws<ArgumentNullException>("culture", () => new CaseInsensitiveHashCodeProvider(null));
}
[Fact]
public void GetHashCode_NullObj_ThrowsArgumentNullException()
{
AssertExtensions.Throws<ArgumentNullException>("obj", () => new CaseInsensitiveHashCodeProvider().GetHashCode(null));
}
[Theory]
[InlineData("hello", "HELLO", true)]
[InlineData("hello", "hello", true)]
[InlineData("HELLO", "HELLO", true)]
[InlineData("hello", "goodbye", false)]
[InlineData(5, 5, true)]
[InlineData(10, 5, false)]
[InlineData(5, 10, false)]
public void Default_GetHashCodeCompare(object a, object b, bool expected)
{
Assert.Equal(expected,
CaseInsensitiveHashCodeProvider.Default.GetHashCode(a) == CaseInsensitiveHashCodeProvider.Default.GetHashCode(b));
Assert.Equal(expected,
CaseInsensitiveHashCodeProvider.DefaultInvariant.GetHashCode(a) == CaseInsensitiveHashCodeProvider.DefaultInvariant.GetHashCode(b));
}
[ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsNotInvariantGlobalization), nameof(PlatformDetection.IsNotHybridGlobalizationOnBrowser))]
[ActiveIssue("https://github.com/dotnet/runtime/issues/37069", TestPlatforms.Android | TestPlatforms.LinuxBionic)]
[ActiveIssue("https://github.com/dotnet/runtime/issues/95338", typeof(PlatformDetection), nameof(PlatformDetection.IsHybridGlobalizationOnApplePlatform))]
public 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 U+0130.
using (new ThreadCultureChange("tr-TR"))
{
Assert.False(CaseInsensitiveHashCodeProvider.Default.GetHashCode("file") == CaseInsensitiveHashCodeProvider.Default.GetHashCode("FILE"));
Assert.True(CaseInsensitiveHashCodeProvider.DefaultInvariant.GetHashCode("file") == CaseInsensitiveHashCodeProvider.DefaultInvariant.GetHashCode("FILE"));
}
using (new ThreadCultureChange("en-US"))
{
Assert.True(CaseInsensitiveHashCodeProvider.Default.GetHashCode("file") == CaseInsensitiveHashCodeProvider.Default.GetHashCode("FILE"));
}
}
}
}