public void Stress_Test()
{
const int iterations = 100;
var random = new Random(0);
var selection = new List <IndexRange>();
var expected = new List <int>();
IndexRange Generate()
{
var start = random.Next(100);
return(new IndexRange(start, start + random.Next(20)));
}
for (var i = 0; i < iterations; ++i)
{
var toAdd = random.Next(5);
for (var j = 0; j < toAdd; ++j)
{
var range = Generate();
IndexRange.Add(selection, range);
for (var k = range.Begin; k <= range.End; ++k)
{
if (!expected.Contains(k))
{
expected.Add(k);
}
}
var actual = IndexRange.EnumerateIndices(selection).ToList();
expected.Sort();
Assert.Equal(expected, actual);
}
var toRemove = random.Next(5);
for (var j = 0; j < toRemove; ++j)
{
var range = Generate();
IndexRange.Remove(selection, range);
for (var k = range.Begin; k <= range.End; ++k)
{
expected.Remove(k);
}
var actual = IndexRange.EnumerateIndices(selection).ToList();
Assert.Equal(expected, actual);
}
selection.Clear();
expected.Clear();
}
}
public void Add_Should_Add_Range_To_Empty_List()
{
var ranges = new List <IndexRange>();
var selected = new List <IndexRange>();
var result = IndexRange.Add(ranges, new IndexRange(0, 4), selected);
Assert.Equal(5, result);
Assert.Equal(new[] { new IndexRange(0, 4) }, ranges);
Assert.Equal(new[] { new IndexRange(0, 4) }, selected);
}
public void Add_Should_Add_Intersecting_Range_Both()
{
var ranges = new List <IndexRange> {
new IndexRange(8, 10)
};
var selected = new List <IndexRange>();
var result = IndexRange.Add(ranges, new IndexRange(6, 12), selected);
Assert.Equal(4, result);
Assert.Equal(new[] { new IndexRange(6, 12) }, ranges);
Assert.Equal(new[] { new IndexRange(6, 7), new IndexRange(11, 12) }, selected);
}
public void Add_Should_Add_Non_Intersecting_Range_In_Middle()
{
var ranges = new List <IndexRange> {
new IndexRange(0, 4), new IndexRange(14, 16)
};
var selected = new List <IndexRange>();
var result = IndexRange.Add(ranges, new IndexRange(8, 10), selected);
Assert.Equal(3, result);
Assert.Equal(new[] { new IndexRange(0, 4), new IndexRange(8, 10), new IndexRange(14, 16) }, ranges);
Assert.Equal(new[] { new IndexRange(8, 10) }, selected);
}
public void Add_Should_Not_Add_Already_Selected_Range()
{
var ranges = new List <IndexRange> {
new IndexRange(8, 10)
};
var selected = new List <IndexRange>();
var result = IndexRange.Add(ranges, new IndexRange(9, 10), selected);
Assert.Equal(0, result);
Assert.Equal(new[] { new IndexRange(8, 10) }, ranges);
Assert.Empty(selected);
}
public void Add_Should_Join_Two_Intersecting_Ranges_And_Add_Ranges()
{
var ranges = new List <IndexRange> {
new IndexRange(8, 10), new IndexRange(12, 14)
};
var selected = new List <IndexRange>();
var result = IndexRange.Add(ranges, new IndexRange(6, 18), selected);
Assert.Equal(7, result);
Assert.Equal(new[] { new IndexRange(6, 18) }, ranges);
Assert.Equal(new[] { new IndexRange(6, 7), new IndexRange(11, 11), new IndexRange(15, 18) }, selected);
}