Nuclex.Support/Source/ObservableHelper.Test.cs

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#region CPL License
/*
Nuclex Framework
Copyright (C) 2002-2017 Nuclex Development Labs
This library is free software; you can redistribute it and/or
modify it under the terms of the IBM Common Public License as
published by the IBM Corporation; either version 1.0 of the
License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
IBM Common Public License for more details.
You should have received a copy of the IBM Common Public
License along with this library
*/
#endregion
#if UNITTEST
using System;
using NUnit.Framework;
namespace Nuclex.Support {
/// <summary>Unit tests for the observable helper</summary>
[TestFixture]
internal class ObservableHelperTest {
#region class TestReferenceType
/// <summary>Example class on which unit test generates change notifications</summary>
public class TestReferenceType {
/// <summary>Example property that will be reported to have changed</summary>
public int SomeProperty { get; set; }
}
#endregion // class TestReferenceType
#region struct TestValueType
/// <summary>Example class on which unit test generates change notifications</summary>
public struct TestValueType {
/// <summary>Example property that will be reported to have changed</summary>
public int SomeProperty { get; set; }
}
#endregion // struct TestValueType
/// <summary>
/// Verifies that the name of a property accessed in a lambda expression
/// can be obtained.
/// </summary>
[Test]
public void CanObtainPropertyNameFromLambdaExpression() {
string propertyName = ObservableHelper.GetPropertyName(
() => SomeReferenceType.SomeProperty
);
Assert.AreEqual("SomeProperty", propertyName);
}
/// <summary>
/// Verifies that the name of a property assigned in a lambda expression
/// can be obtained.
/// </summary>
[Test]
public void CanObtainPropertyNameFromBoxedLambdaExpression() {
string propertyName = ObservableHelper.GetPropertyName(
() => (object)(SomeValueType.SomeProperty)
);
Assert.AreEqual("SomeProperty", propertyName);
}
/// <summary>Helper used to construct lambda expressions</summary>
protected static TestReferenceType SomeReferenceType { get; set; }
/// <summary>Helper used to construct lambda expressions</summary>
protected static TestValueType SomeValueType { get; set; }
}
}
#endif // UNITTEST