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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.
#nullable disable
using Microsoft.CodeAnalysis.Test.Utilities;
using Xunit;
namespace Microsoft.CodeAnalysis
{
[CompilerTrait(CompilerFeature.NullableReferenceTypes)]
public class NullabilityInfoTests
{
[Fact]
public void Equality()
{
assertEqualsAndHashCode(default(NullabilityInfo), default(NullabilityInfo), equal: true);
assertEqualsAndHashCode(new NullabilityInfo(NullableAnnotation.Annotated, NullableFlowState.NotNull),
new NullabilityInfo(NullableAnnotation.Annotated, NullableFlowState.NotNull),
equal: true);
assertEqualsAndHashCode(new NullabilityInfo(NullableAnnotation.Annotated, NullableFlowState.NotNull),
new NullabilityInfo(NullableAnnotation.NotAnnotated, NullableFlowState.NotNull),
equal: false);
assertEqualsAndHashCode(new NullabilityInfo(NullableAnnotation.Annotated, NullableFlowState.MaybeNull),
new NullabilityInfo(NullableAnnotation.Annotated, NullableFlowState.NotNull),
equal: false);
void assertEqualsAndHashCode(NullabilityInfo n1, NullabilityInfo n2, bool equal)
{
if (equal)
{
Assert.Equal(n1, n2);
Assert.Equal(n1.GetHashCode(), n2.GetHashCode());
}
else
{
Assert.NotEqual(n1, n2);
Assert.NotEqual(n1.GetHashCode(), n2.GetHashCode());
}
}
}
}
}
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