public void Add()
{
var xs = Enumerable.Range(0, 10000).ToList();
var actual = new FilteredView <int>(xs, Predicate);
Assert.Throws <InvalidOperationException>(() => actual.Add(1));
bool Predicate(int x)
{
return(x % 2 == 0);
}
}
public void Count2()
{
var xs = Enumerable.Range(0, 10000).ToList();
var expected = xs.Where(Predicate).Count();
var actual = new FilteredView <int>(xs, Predicate).Count;
Assert.Equal(expected, actual);
bool Predicate(int x)
{
return(x % 17 < 7);
}
}
public void Indexing2()
{
var xs = Enumerable.Range(0, 10000).ToList();
var expected = xs.Where(Predicate).ToList();
var actual = new FilteredView <int>(xs, Predicate);
Assert.Equal(Copy(actual), expected);
bool Predicate(int x)
{
return(x % 2 == 0);
}
}
public void IndexOf()
{
var ints = Enumerable.Range(0, 10000).ToList();
var xs = ints.Where(Predicate).ToList();
var ys = new FilteredView <int>(ints, Predicate);
for (int i = 0; i != 10000; ++i)
{
var expected = xs.IndexOf(i);
var actual = ys.IndexOf(i);
Assert.Equal(expected, actual);
}
bool Predicate(int x)
{
return(x % 2 == 0);
}
}