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