public void ConnectMethod_StartEndIntFourthTimeInput_ArrayChangesStartValueToRootOfTreeValue()
{
const int startPointValue = 2;
const int endPointValue = 3;
var intArray = new int[] { 0, 1, 2, 4, 9, 5, 6, 7, 0, 9 };
var expectedResult = new int[] { 0, 1, 9, 4, 9, 5, 6, 7, 0, 9 };
var sut = new QuickUnionBuilder(intArray);
sut.Connect(startPointValue, endPointValue);
intArray[startPointValue].ShouldEqual(sut.RootOfTreeFor(endPointValue));
intArray.ShouldEqual(expectedResult);
}
public void ConnectMethod_EntireSequenceOfStartPointInputs_EndPointValuesPointToTraversableRootValues()
{
var intArray = new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
var sut = new QuickUnionBuilder(intArray);
sut.Connect(3, 4);
intArray.ShouldEqual(new int[] { 0, 1, 2, 4, 4, 5, 6, 7, 8, 9 });
sut.Connect(4, 9);
intArray.ShouldEqual(new int[] { 0, 1, 2, 4, 9, 5, 6, 7, 8, 9 });
sut.Connect(8, 0);
intArray.ShouldEqual(new int[] { 0, 1, 2, 4, 9, 5, 6, 7, 0, 9 });
sut.Connect(2, 3);
intArray.ShouldEqual(new int[] { 0, 1, 9, 4, 9, 5, 6, 7, 0, 9 });
sut.Connect(5, 6);
intArray.ShouldEqual(new int[] { 0, 1, 9, 4, 9, 6, 6, 7, 0, 9 });
sut.Connect(2, 9);
intArray.ShouldEqual(new int[] { 0, 1, 9, 4, 9, 6, 6, 7, 0, 9 });
sut.Connect(5, 9);
intArray.ShouldEqual(new int[] { 0, 1, 9, 4, 9, 6, 9, 7, 0, 9 });
sut.Connect(7, 3);
intArray.ShouldEqual(new int[] { 0, 1, 9, 4, 9, 6, 9, 9, 0, 9 });
sut.Connect(4, 8);
intArray.ShouldEqual(new int[] { 0, 1, 9, 4, 9, 6, 9, 9, 0, 0 });
sut.Connect(5, 6);
intArray.ShouldEqual(new int[] { 0, 1, 9, 4, 9, 6, 9, 9, 0, 0 });
sut.Connect(0, 2);
intArray.ShouldEqual(new int[] { 0, 1, 9, 4, 9, 6, 9, 9, 0, 0 });
sut.Connect(6, 1);
intArray.ShouldEqual(new int[] { 1, 1, 9, 4, 9, 6, 9, 9, 0, 0 });
sut.Connect(5, 8);
intArray.ShouldEqual(new int[] { 1, 1, 9, 4, 9, 6, 9, 9, 0, 0 });
}