public void EqualsShouldReturnTrueWhenBothModelsAreNull()
{
ModelEqualityComparer<ModelStub> comparer = new ModelEqualityComparer<ModelStub>();
Assert.That(((IEqualityComparer)comparer).Equals(null, null), Is.True);
Assert.That(((IEqualityComparer<ModelStub>)comparer).Equals(null, null), Is.True);
}
public void GetHashCodeShouldReturnTheModelsHashCode()
{
var modelA = new ModelStub(System.Guid.NewGuid(), 1);
ModelEqualityComparer<ModelStub> comparer = new ModelEqualityComparer<ModelStub>();
Assert.That(((IEqualityComparer)comparer).GetHashCode(modelA), Is.EqualTo(modelA.GetHashCode()));
Assert.That(((IEqualityComparer<ModelStub>)comparer).GetHashCode(modelA), Is.EqualTo(modelA.GetHashCode()));
}
public void EqualsShouldReturnTrueWhenBothModelsAreEqual()
{
var modelA = new ModelStub(System.Guid.NewGuid(), 1);
var modelB = new ModelStub(modelA.Id, 1);
ModelEqualityComparer<ModelStub> comparer = new ModelEqualityComparer<ModelStub>();
Assert.That(((IEqualityComparer)comparer).Equals(modelA, modelB), Is.True);
Assert.That(((IEqualityComparer<ModelStub>)comparer).Equals(modelA, modelB), Is.True);
}
public void EqualsShouldReturnFalseWhenEitherModelIsNull()
{
var modelA = new ModelStub(System.Guid.NewGuid(), 1);
var modelB = new ModelStub(modelA.Id, 1);
ModelEqualityComparer<ModelStub> comparer = new ModelEqualityComparer<ModelStub>();
Assert.That(((IEqualityComparer)comparer).Equals(modelA, null), Is.False);
Assert.That(((IEqualityComparer)comparer).Equals(null, modelB), Is.False);
Assert.That(((IEqualityComparer<ModelStub>)comparer).Equals(modelA, null), Is.False);
Assert.That(((IEqualityComparer<ModelStub>)comparer).Equals(null, modelB), Is.False);
}
