public void All_With_NullPredicate_Must_Throw()
{
// Arrange
var wrapped = Wrap.AsValueReadOnlyCollection(new int[0]);
var predicate = (Predicate <int>)null;
// Act
Action action = () => _ = ValueReadOnlyCollectionExtensions
.All <Wrap.ValueReadOnlyCollectionWrapper <int>, Wrap.Enumerator <int>, int>(wrapped, predicate);
// Assert
_ = action.Must()
.Throw <ArgumentNullException>()
.EvaluateTrue(exception => exception.ParamName == "predicate");
}
public void All_With_ValidData_Must_Succeed(int[] source, Predicate <int> predicate)
{
// Arrange
var wrapped = Wrap.AsValueReadOnlyCollection(source);
var expected =
System.Linq.Enumerable.All(wrapped, predicate.AsFunc());
// Act
var result = ValueReadOnlyCollectionExtensions
.All <Wrap.ValueReadOnlyCollectionWrapper <int>, Wrap.Enumerator <int>, int>(wrapped, predicate);
// Assert
_ = result.Must()
.BeEqualTo(expected);
}
public void All_PredicateAt_With_ValidData_Must_Succeed(int[] source, Func <int, int, bool> predicate)
{
// Arrange
var wrapped = Wrap.AsValueReadOnlyCollection(source);
var expected =
System.Linq.Enumerable.Count(
System.Linq.Enumerable.Where(source, predicate)) == source.Length;
// Act
var result = ValueReadOnlyCollectionExtensions
.All <Wrap.ValueReadOnlyCollectionWrapper <int>, Wrap.Enumerator <int>, int>(wrapped, predicate);
// Assert
_ = result.Must()
.BeEqualTo(expected);
}