public void TestAtLeastPercent()
{
var ints = Linq.Range(1, 10).ToShuffledList(0);
Assert.True(ints.AtLeastPercent(0.5, x => x >= 5));
Assert.False(ints.AtLeastPercent(0.5, x => x > 5));
}
public void TestDistinct()
{
var ints = Linq.Range(0, 10).ToList();
Assert.True(ints.Distinct((a, b) => a == b).Count() == 10);
var ints2 = new[] { 1, 1, 2, 2, 3, 2, 2 };
Assert.True(ints2.Distinct((a, b) => a == b).Count() == 3);
}
public void TestRange()
{
CollectionAssert.AreEqual(Linq.Range(5), new[] { 0, 1, 2, 3, 4 });
CollectionAssert.AreEqual(Linq.Range(2, 5), new[] { 2, 3, 4 });
CollectionAssert.AreEqual(Linq.Range(5, 2), new[] { 5, 4, 3 });
CollectionAssert.AreEqual(Linq.Range(2, 5, 2), new[] { 2, 4 });
CollectionAssert.AreEqual(Linq.Range(0, 5, 2), new[] { 0, 2, 4 });
CollectionAssert.AreEqual(Linq.Range(5, 0, -2), new[] { 5, 3, 1 });
CollectionAssert.AreEqual(Linq.Range(0), new int[] { });
CollectionAssert.AreEqual(Linq.Range(1, 1), new int[] { });
CollectionAssert.AreEqual(Linq.Range(5, 2, 1), new int[] { });
CollectionAssert.AreEqual(Linq.Range(2, 5, -1), new int[] { });
}
private HtmlTable(IHtmlTableElement e)
{
var headings = e.QuerySelectorAll("tr")
.Where(x => x.Children.All(y => y is IHtmlTableHeaderCellElement))
.Select(x => (IHtmlTableRowElement)x)
.ToList();
if (headings.Any())
{
var rowChildren = headings.Select(x => (Row: x, Children: RowChildren(x).ToList())).ToList();
var num = rowChildren.First().Children.Count;
foreach (var(row, children) in rowChildren.Skip(1))
{
if (children.Count != num)
{
throw new HtmlElementException(row,
$"Expected all of the rows to have the same amount of cells ({num}). But this one has {RowChildren(row).Count()}");
}
}
ColumnTitles = Linq.Range(num)
.Select(i => rowChildren.Select(x => x.Children[i]))
.Select(x => x.Select(y => y.TextContent.Trim()).Join(" ").Trim())
.ToList();
_rows = e.QuerySelectorAll("tr").Skip(headings.Count).Select(row => (IHtmlTableRowElement)row).ToList();
}
else
{
ColumnTitles = Array.Empty <string>();
_rows = e.QuerySelectorAll("tr").Select(row => (IHtmlTableRowElement)row).ToList();
}
_columnTitleToIndex = ColumnTitles.Enumerate()
.Distinct((i1, i2) => i1.Index == i2.Index)
.ToDictionary(tup => tup.Elem, tup => tup.Index);
}
private static IEnumerable <IHtmlTableCellElement> RowChildren(IHtmlTableRowElement re)
{
return(re.Children <IHtmlTableCellElement>()
.Value.SelectMany(child => Linq.Range(child.ColumnSpan), (child, _) => child));
}
