public void TestOnlyOneNullNotEquivalent()
{
var comparer = new HasIdEqualityComparer <Person>();
var other = new Person {
Id = 10
};
Assert.IsFalse(comparer.Equals(null, other), "One null and one non-null person should not compare as equal");
Assert.IsFalse(comparer.Equals(other, null), "One null and one non-null person should not compare as equal with operands reversed");
}
public void TestEqualIdsEquivalent()
{
var comparer = new HasIdEqualityComparer <Person>();
var one = new Person {
Id = 10
};
var two = new Person {
Id = 10
};
Assert.IsTrue(comparer.Equals(one, two), "Two person objects with same ids should compare as equal");
Assert.IsTrue(comparer.Equals(two, one), "Two person objects with same ids should compare as equal with operands reversed");
}
public void TestDifferentIdsNotEquivalent()
{
var comparer = new HasIdEqualityComparer <Person>();
var one = new Person {
Id = 10
};
var two = new Person {
Id = 20
};
Assert.IsFalse(comparer.Equals(one, two), "Two person objects with different ids should not compare as equal");
Assert.IsFalse(comparer.Equals(two, one), "Two person objects with different ids should not compare as equal with operands reversed");
}
public void TestBoth0NullEquivalent()
{
var comparer = new HasIdEqualityComparer <Person>();
Assert.IsTrue(comparer.Equals(null, null), "Two null persons should compare as equal");
}
