void Min()
{
IEnumerable <DummyIComparable> nullEnumerable = new DummyIComparable[] { null, -1, -1, null, 0, 1, 1 };
DummyIComparable result = null;
Test.IfNot.Action.ThrowsException(() => result = nullEnumerable.Minimum(), out Exception ex);
Test.If.Value.IsEqual(result, -1);
}
void Min_ThrowsException()
{
IEnumerable <DummyIComparable> empty = Enumerable.Empty <DummyIComparable>();
IEnumerable <DummyIComparable> nulls = new DummyIComparable[] { null, null };
Test.If.Action.ThrowsException(() => IEnumerableTExtensions.Minimum <DummyIComparable>(null), out ArgumentNullException ex);
Test.If.Value.IsEqual(ex.ParamName, "_this");
Test.If.Action.ThrowsException(() => empty.Minimum(), out ArgumentException argEx);
Test.If.Value.IsEqual(argEx.ParamName, "_this");
Test.If.String.StartsWith(argEx.Message, "The enumeration is empty.");
Test.If.Action.ThrowsException(() => nulls.Minimum(), out argEx);
Test.If.Value.IsEqual(argEx.ParamName, "_this");
Test.If.String.StartsWith(argEx.Message, "The enumeration only contains null values.");
}