public void ByProperties_CreatesComparerBasedOnAllPropertiesEquality()
{
var comparer =
EqualityComparer.ByProperties <DummyByMembersEqualityComparable>();
comparer.Should()
.HandleBasicEqualitiesAndInequalites()
.And.ValidateEqualityOf(
new DummyByMembersEqualityComparable(
5, new[] { 'a', 'b' }, new DateTime(2018, 07, 30), new[] { true, true }),
new DummyByMembersEqualityComparable(
3, new[] { 'c', 'd' }, new DateTime(2018, 07, 30), new[] { true, true }),
"fields should be ignored")
.And.InvalidateEqualityOf(
new DummyByMembersEqualityComparable(
5, new[] { 'a', 'b' }, new DateTime(2018, 07, 30), new[] { true, true }),
new DummyByMembersEqualityComparable(
5, new[] { 'a', 'b' }, new DateTime(2018, 06, 24), new[] { true, true }),
"objects with different properties shouldn't equals");
}
public void ByProperties_WithSelector_CreatesComparerBasedOnSelectedPropertiesEquality()
{
var comparer =
EqualityComparer.ByProperties <DummyByMembersEqualityComparable>(
properties => properties.Where(property => property.Name.EndsWith("A")));
comparer.Should()
.HandleBasicEqualitiesAndInequalites()
.And.ValidateEqualityOf(
new DummyByMembersEqualityComparable(
5, new[] { 'a', 'b' }, new DateTime(2018, 07, 30), new[] { true, true }),
new DummyByMembersEqualityComparable(
3, new[] { 'c', 'd' }, new DateTime(2018, 07, 30), new[] { false, false }),
"unselected properties and every field should be ignored")
.And.InvalidateEqualityOf(
new DummyByMembersEqualityComparable(
5, new[] { 'a', 'b' }, new DateTime(2018, 07, 30), new[] { true, true }),
new DummyByMembersEqualityComparable(
5, new[] { 'a', 'b' }, new DateTime(2018, 06, 24), new[] { true, true }),
"objects with different selected properties shouldn't equals");
}