public void Detects_cycle_in_struct()
{
var one = new CycledStruct {
FirstObject = new CycledStructObject()
};
one.FirstObject.SecondStruct = one;
var other = new CycledStruct {
FirstObject = new CycledStructObject()
};
other.FirstObject.SecondStruct = other;
using (new AssertionScope()) {
ComparerStruct.Equals(one, other).Should().BeTrue();
ComparerStruct.GetHashCode(one).Should().Be(ComparerStruct.GetHashCode(other));
}
}
public void Detects_cycle_on_second_member()
{
var one = new CycledStruct {
SecondObject = new CycledStructObject()
};
one.SecondObject.FirstStruct = one;
/*
* v1
* / \
* N 1
* / \
* v1 vX
* / | | \
* N 1 N N
*/
var other = new CycledStruct {
SecondObject = new CycledStructObject()
};
/*
* v2
* / \
* N 2
* / \
* v2 VY
* / | | \
* N N N N
*/
var expected = CycledStruct.Comparer.Compare(one, other);
var actual = ComparerStruct.Compare(one, other);
using (new AssertionScope()) {
expected.Should().Be(1);
actual.Should().Be(expected);
}
}
public void Detects_cycle_in_struct()
{
var one = new CycledStruct {
FirstObject = new CycledStructObject()
};
one.FirstObject.SecondStruct = one;
var other = new CycledStruct {
FirstObject = new CycledStructObject()
};
other.FirstObject.SecondStruct = other;
var expected = CycledStruct.Comparer.Compare(one, other);
var actual = ComparerStruct.Compare(one, other);
using (new AssertionScope()) {
expected.Should().Be(0);
actual.Should().Be(expected);
}
}
public void Detects_cycle_on_second_member()
{
var one = new CycledStruct {
SecondObject = new CycledStructObject()
};
one.SecondObject.FirstStruct = one;
/*
* v1
* / \
* N 1
* / \
* v1 vX
* / | | \
* N 1 N N
*/
var other = new CycledStruct {
SecondObject = new CycledStructObject()
};
/*
* v2
* / \
* N 2
* / \
* v2 VY
* / | | \
* N N N N
*/
using (new AssertionScope()) {
ComparerStruct.Equals(one, other).Should().BeFalse();
ComparerStruct.GetHashCode(one).Should().Be(193377063);
ComparerStruct.GetHashCode(other).Should().Be(193376997);
}
}