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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Linq.Expressions;
using System.Reflection;
using Xunit;
namespace System.Web.Mvc.ExpressionUtil.Test
{
public class MemberExpressionFingerprintTest
{
[Fact]
public void Properties()
{
// Arrange
ExpressionType expectedNodeType = ExpressionType.MemberAccess;
Type expectedType = typeof(int);
MemberInfo expectedMember = typeof(TimeSpan).GetProperty("Seconds");
// Act
MemberExpressionFingerprint fingerprint = new MemberExpressionFingerprint(expectedNodeType, expectedType, expectedMember);
// Assert
Assert.Equal(expectedNodeType, fingerprint.NodeType);
Assert.Equal(expectedType, fingerprint.Type);
Assert.Equal(expectedMember, fingerprint.Member);
}
[Fact]
public void Comparison_Equality()
{
// Arrange
ExpressionType nodeType = ExpressionType.MemberAccess;
Type type = typeof(int);
MemberInfo member = typeof(TimeSpan).GetProperty("Seconds");
// Act
MemberExpressionFingerprint fingerprint1 = new MemberExpressionFingerprint(nodeType, type, member);
MemberExpressionFingerprint fingerprint2 = new MemberExpressionFingerprint(nodeType, type, member);
// Assert
Assert.Equal(fingerprint1, fingerprint2);
Assert.Equal(fingerprint1.GetHashCode(), fingerprint2.GetHashCode());
}
[Fact]
public void Comparison_Inequality_FingerprintType()
{
// Arrange
ExpressionType nodeType = ExpressionType.MemberAccess;
Type type = typeof(int);
MemberInfo member = typeof(TimeSpan).GetProperty("Seconds");
// Act
MemberExpressionFingerprint fingerprint1 = new MemberExpressionFingerprint(nodeType, type, member);
DummyExpressionFingerprint fingerprint2 = new DummyExpressionFingerprint(nodeType, type);
// Assert
Assert.NotEqual<ExpressionFingerprint>(fingerprint1, fingerprint2);
}
[Fact]
public void Comparison_Inequality_Member()
{
// Arrange
ExpressionType nodeType = ExpressionType.MemberAccess;
Type type = typeof(int);
MemberInfo member = typeof(TimeSpan).GetProperty("Seconds");
// Act
MemberExpressionFingerprint fingerprint1 = new MemberExpressionFingerprint(nodeType, type, member);
MemberExpressionFingerprint fingerprint2 = new MemberExpressionFingerprint(nodeType, type, null /* member */);
// Assert
Assert.NotEqual(fingerprint1, fingerprint2);
}
[Fact]
public void Comparison_Inequality_Type()
{
// Arrange
ExpressionType nodeType = ExpressionType.MemberAccess;
Type type = typeof(int);
MemberInfo member = typeof(TimeSpan).GetProperty("Seconds");
// Act
MemberExpressionFingerprint fingerprint1 = new MemberExpressionFingerprint(nodeType, type, member);
MemberExpressionFingerprint fingerprint2 = new MemberExpressionFingerprint(nodeType, typeof(object), member);
// Assert
Assert.NotEqual(fingerprint1, fingerprint2);
}
}
}
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