public void demanding_at_most_n_succeeds_on_lists_containing_n_elements(int n)
{
var full = Enumerable.Repeat(0, n);
Action vrfy = () => Demand.ThatFor(full).AtMost(n).Match(x => x != 0).Because("This is a slightly less trivial success");
vrfy.ShouldNotThrow();
}
public void demanding_at_most_n_always_succeeds_on_empty_lists(int n)
{
var empty = new int[] {}.ToList();
Action vrfy = () => Demand.ThatFor(empty).AtMost(n).Match(x => x != 0).Because("Trivial success is still success");
vrfy.ShouldNotThrow();
}
public void demanding_at_most_one_of_a_failing_list_with_a_custom_msgfunc_throws_with_the_right_msg()
{
var several = new[] { 0, 1, 0, 2, 0, 3, 0, 4, 0, 5 }.ToList();
Func <IEnumerable <int>, string> msgfunc = (matches) => {
var firstThree = matches.Take(3).ToList();
return($"A bunch failed, starting with {firstThree[0]}, {firstThree[1]}, and {firstThree[2]}");
};
Action vrfy = () => Demand.ThatFor(several).AtMost(1).Match(x => x != 0).Because(msgfunc);
vrfy.ShouldThrow <DemandUnmetException>()
.WithMessage("A bunch failed, starting with 1, 2, and 3");
}
public void demanding_at_least_k_of_a_list_with_n_matches_fails_when_n_is_less_than_k(int k, int n, bool shouldThrow)
{
var matches = Enumerable.Repeat(0, n);
var others = Enumerable.Range(1, 10);
var list = matches.Concat(others).OrderBy(e => Guid.NewGuid()).ToList();
Action vrfy = () => Demand.ThatFor(list).AtLeast(k).Match(x => x == 0).Because("I said so");
if (shouldThrow)
{
vrfy.ShouldThrow <DemandUnmetException>();
}
else
{
vrfy.ShouldNotThrow();
}
}
public void demanding_at_most_k_succeeds_on_lists_with_n_matching_elements_iff_n_is_not_larger_than_k(int k, int n, bool shouldThrow)
{
var matches = Enumerable.Repeat(0, n);
var others = Enumerable.Range(1, 10);
var list = matches.Concat(others).OrderBy(e => Guid.NewGuid()).ToList();
Action vrfy = () => Demand.ThatFor(list).AtMost(k).Match(x => x == 0).Because("I said so");
if (shouldThrow)
{
vrfy.ShouldThrow <DemandUnmetException>();
}
else
{
vrfy.ShouldNotThrow();
}
}
