public void Getting_Errors_From_Maybe_Enumerable()
{
var maybes = new List <IMaybe <int> > {
AssertionUtilities.DivisionMaybe(4, 2),
AssertionUtilities.DivisionMaybe(3, 0),
AssertionUtilities.DivisionMaybe(3, 3),
AssertionUtilities.DivisionMaybe(4, 0),
AssertionUtilities.DivisionMaybe(5, 0),
AssertionUtilities.DivisionMaybe(6, 0),
AssertionUtilities.DivisionMaybe(7, 0),
AssertionUtilities.DivisionMaybe(8, 0),
AssertionUtilities.DivisionMaybe(10, 2)
};
var list = maybes.Nones(() => "Failed divisions.").ToArray();
Assert.Equal(6, list.Length);
}
public void Passing_Null_As_Value_Selector_Throws()
{
var maybes = new List <IMaybe <int> > {
AssertionUtilities.DivisionMaybe(4, 2),
AssertionUtilities.DivisionMaybe(3, 0),
AssertionUtilities.DivisionMaybe(3, 3),
AssertionUtilities.DivisionMaybe(4, 0),
AssertionUtilities.DivisionMaybe(5, 0),
AssertionUtilities.DivisionMaybe(6, 0),
AssertionUtilities.DivisionMaybe(7, 0),
AssertionUtilities.DivisionMaybe(8, 0),
AssertionUtilities.DivisionMaybe(10, 2)
};
Assert.Throws <ArgumentNullException>(
AssertionUtilities.MaybeValueSelector,
() => maybes.Match(null, () => - 1)
);
}
public void Works_Like_Extension_Methods_Values_And_Nones()
{
var maybes = new List <IMaybe <int> > {
AssertionUtilities.DivisionMaybe(4, 2),
AssertionUtilities.DivisionMaybe(3, 0),
AssertionUtilities.DivisionMaybe(3, 3),
AssertionUtilities.DivisionMaybe(4, 0),
AssertionUtilities.DivisionMaybe(5, 0),
AssertionUtilities.DivisionMaybe(6, 0),
AssertionUtilities.DivisionMaybe(7, 0),
AssertionUtilities.DivisionMaybe(8, 0),
AssertionUtilities.DivisionMaybe(10, 2)
};
var matches = maybes
.Match(i => i, () => - 1)
.ToArray();
Assert.Equal(maybes.Values(), matches.Where(x => x != -1));
Assert.Equal(maybes.Nones(() => - 1), matches.Where(x => x == -1));
}