public void DetermineConstructionOrder()
{
// Arrange
var input = new List <string>
{
"Step C must be finished before step A can begin.",
"Step C must be finished before step F can begin.",
"Step A must be finished before step B can begin.",
"Step A must be finished before step D can begin.",
"Step B must be finished before step E can begin.",
"Step D must be finished before step E can begin.",
"Step F must be finished before step E can begin."
};
var sut = new Day07();
// Act
var result = sut.DetermineConstructionOrder(input);
// Assert
result.Should().Be("CABDFE");
}