When_an_type_only_exposes_properties_but_properties_are_ignored_in_the_equivalence_comparision_it_should_fail()
{
// Arrange
var object1 = new ClassWithOnlyAProperty {
Value = 1
};
var object2 = new ClassWithOnlyAProperty {
Value = 101
};
// Act
Action act = () => object1.Should().BeEquivalentTo(object2, opts => opts.ExcludingProperties());
// Assert
act.Should().Throw <InvalidOperationException>("the objects have no members to compare.");
}
public void When_a_field_on_the_subject_matches_a_property_the_members_should_match_for_equivalence()
{
// Arrange
var onlyAField = new ClassWithOnlyAField {
Value = 1
};
var onlyAProperty = new ClassWithOnlyAProperty {
Value = 101
};
// Act
Action act = () => onlyAField.Should().BeEquivalentTo(onlyAProperty);
// Assert
act.Should().Throw <XunitException>().WithMessage("Expected property onlyAField.Value*to be 101, but found 1.*");
}
public void When_multiple_equivalency_steps_are_added_they_should_be_executed_in_registration_order()
{
// Arrange
var subject = new ClassWithOnlyAProperty();
var expected = new ClassWithOnlyAProperty();
// Act
Action act =
() =>
subject.Should().BeEquivalentTo(expected,
opts =>
opts.Using(new ThrowExceptionEquivalencyStep <NotSupportedException>())
.Using(new ThrowExceptionEquivalencyStep <InvalidOperationException>()));
// Assert
act.Should().Throw <NotSupportedException>();
}
public void When_an_equivalency_does_not_handle_the_comparison_later_equivalency_steps_should_still_be_ran()
{
// Arrange
var subject = new ClassWithOnlyAProperty();
var expected = new ClassWithOnlyAProperty();
// Act
Action act =
() =>
subject.Should().BeEquivalentTo(expected,
opts =>
opts.Using(new NeverHandleEquivalencyStep())
.Using(new ThrowExceptionEquivalencyStep <InvalidOperationException>()));
// Assert
act.Should().Throw <InvalidOperationException>();
}
public void When_asserting_equivalence_including_only_properties_it_should_not_match_fields()
{
// Arrange
var onlyAField = new ClassWithOnlyAField {
Value = 1
};
var onlyAProperty = new ClassWithOnlyAProperty {
Value = 101
};
// Act
Action act = () => onlyAField.Should().BeEquivalentTo(onlyAProperty, opts => opts.IncludingAllDeclaredProperties());
// Assert
act.Should().Throw <XunitException>()
.WithMessage("Expectation has property onlyAField.Value that the other object does not have*");
}
public void When_multiple_assertion_rules_are_added_with_the_fluent_api_they_should_be_executed_from_right_to_left()
{
// Arrange
var subject = new ClassWithOnlyAProperty();
var expected = new ClassWithOnlyAProperty();
// Act
Action act =
() =>
subject.Should().BeEquivalentTo(expected,
opts =>
opts.Using <object>(_ => throw new Exception())
.When(_ => true)
.Using <object>(_ => { })
.When(_ => true));
// Assert
act.Should().NotThrow(
"a different assertion rule should handle the comparison before the exception throwing assertion rule is hit");
}