public void MergeBy_WithInfiniteLists_DoesNotHang()
{
var infiniteList1 = GetAllLongs();
var infiniteList2 = GetAllLongs();
var result = LinqMethods.MergeBy(x => x, infiniteList1, infiniteList2)
.Take(100000).ToList();
result.Should().BeInAscendingOrder()
.And.HaveCount(100000);
}
public void MergeBy_Date_ReturnsAllItemsOrderedByDate()
{
var result = LinqMethods
.MergeBy(new[] { _items1, _items2 }, x => x.Day);
result.Should()
.BeInAscendingOrder(item => item.Day)
.And.BeEquivalentTo(_expectation, "some items were not found in the result")
;
}
public void MergeBy_WithSimpleOrderedLists_ReturnsOrderedList()
{
var list1 = new[] { 1, 3, 5, 7 };
var list2 = new[] { 2, 4, 6, 8 };
var list3 = new[] { -1, 11 };
var result = LinqMethods.MergeBy(x => x, list1, list2, list3);
result.Should().Equal(-1, 1, 2, 3, 4, 5, 6, 7, 8, 11);
}
public void MergeBy_DateAndTitle_ReturnsExactlyExpectedResult()
{
var result = LinqMethods
.MergeBy(
new[] { _items1, _items2 },
x => x.Day)
.ThenBy(x => x.Title);
result.Should().Equal(_expectation);
}
public void MergeBy_WithLargeNumberOfLists_DoesNotHang()
{
var listsNo = 5000;
var random = new Random(0); //random, but the same random every time...
var lists = Enumerable.Range(1, listsNo)
.Select(_ =>
{
var start = random.Next();
var step = random.Next(1, 100); //positive
var end = start + step * random.Next(0, 10);
return(GetAllLongs(start, step, end));
});
var result = LinqMethods.MergeBy(lists, x => x).ToList();
result.Should().BeInAscendingOrder();
}