public void Paired_Numeric_Sequence_Has_No_Start_Item()
{
var sequenceGenerator = new PairedNumericSequenceGenerator();
var actual = sequenceGenerator.Generate(10);
actual.FirstItem.Should().Be(null);
}
public Grid GetPairedNumericGrid(int rows = 5, int columns = 2)
{
var grid = new Grid(rows, columns);
var sequenceGenerator = new PairedNumericSequenceGenerator();
grid.PopulateCells(sequenceGenerator);
grid.RandomiseCells();
return(grid);
}
public void Paired_Numeric_Sequence_Only_Returns_Pairs()
{
var sequenceGenerator = new PairedNumericSequenceGenerator();
var actual = sequenceGenerator.Generate(10);
var groupedNumbers = actual.Items.GroupBy(g => g.Value).ToDictionary(d => d.Key, d => d.Count());
groupedNumbers.Max(d => d.Value).Should().Be(2);
groupedNumbers.Min(d => d.Value).Should().Be(2);
actual.FirstItem.Should().Be(null);
}
public void Paired_Numeric_Sequence_Pairs_Point_To_Each_Other()
{
var sequenceGenerator = new PairedNumericSequenceGenerator();
var actual = sequenceGenerator.Generate(10);
for (int i = 0; i < actual.Items.Count; i++)
{
var itemBeingChecked = actual.Items[i];
var itemPair = actual.Items.Single(item => item.Value == itemBeingChecked.Value && item != itemBeingChecked);
itemPair.NextItem.Should().Be(i + 1); // Not 0 based
}
actual.FirstItem.Should().Be(null);
}
