public void SChainedComparer_CompareS()
{
var subject = new PropertySEqualizer();
Assert.That(subject.Equals(_a, new EqualitySubject {
S = "A"
}), Is.True);
Assert.That(subject.Equals(_a, _b), Is.False);
}
public void Inheritors_DoNotHaveToCareAboutNulls()
{
var notNull = new EqualitySubject {
S = "A"
};
var chainable = new PropertySEqualizer();
Assert.That(chainable.Equals(notNull, null), Is.False);
Assert.That(chainable.Equals(null, notNull), Is.False);
Assert.That(chainable.Equals(null, null), Is.True);
}
public void Explore()
{
PropertySEqualizer inheritor = new PropertySEqualizer();
Assert.That(inheritor, Is.InstanceOf <IEqualityComparer <EqualitySubject> >(), "is a proper comparer");
EqualitySubject one = new EqualitySubject("1", 1, 1m), two = new EqualitySubject("1", 2, 2m);
Assert.That(inheritor.Equals(one, two), Is.True, "x.S == y.S");
Assert.That(inheritor.GetHashCode(one), Is.EqualTo(one.S.GetHashCode()));
ChainableEqualizer <EqualitySubject> chained = inheritor.Then(new PropertyIEqualizer());
Assert.That(one, Is.Not.EqualTo(two).Using(chained), "x.I != y.I");
}
