private void StrictSetDiffer <S1, S2>()
where S1 : IStrictSet <int>, new()
where S2 : IStrictSet <int>, new()
{
var origin = new S1();
var other = new S2();
Fill(origin, 0, 5000);
Fill(other, 4000, 5000);
var result = origin.Differ(other);
for (var i = 0; i < 4000; i++)
{
Assert.True(origin.Contains(i));
Assert.True(result.Contains(i));
}
for (var i = 4000; i < 5000; i++)
{
Assert.False(origin.Contains(i));
Assert.False(result.Contains(i));
}
}