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 GetHashCodeShouldReturnAUniqueHashCodePerModelIdentity()
{
ModelStub model1 = new ModelStub();
ModelStub model2 = model1;
Assert.That(model1.GetHashCode(), Is.EqualTo(model1.GetHashCode()));
Assert.That(model1.GetHashCode(), Is.EqualTo(model2.GetHashCode()));
ModelStub model3 = new ModelStub(System.Guid.NewGuid(), 1);
ModelStub model4 = new ModelStub(model3.Id, 1);
Assert.That(model3.GetHashCode(), Is.EqualTo(model4.GetHashCode()));
}
public void GetHashCodeShouldReturnSameHasCodeWhereModelIdentityIsEqual()
{
ModelStub model1 = new ModelStub();
ModelStub model2 = new ModelStub();
Assert.That(model1.GetHashCode(), Is.Not.EqualTo(model2.GetHashCode()));
ModelStub model3 = new ModelStub(System.Guid.NewGuid(), 0);
ModelStub model4 = new ModelStub(model3.Id, 0);
Assert.That(model3.GetHashCode(), Is.Not.EqualTo(model4.GetHashCode()));
}