public void GetNodes_ByDefault_ReturnsAnEmptyArray()
{
CourseDependencyGraph courseGraph = CreateCourseDependencyGraph();
var courses = courseGraph.GetNodes();
Assert.AreEqual(0, courses.Count());
}
public void CreateNewOrGetExistingNode_WhenCalled_ChangesCourseNodes()
{
CourseDependencyGraph courseGraph = CreateCourseDependencyGraph();
Course course = courseGraph.CreateNewOrGetExistingNode(GetName());
Assert.AreEqual(1, courseGraph.GetNodes().Count());
}
private static Course[] PlanCoursesBasedOnPrerequisites(string[] courses, string[][] courseDependencies)
{
CourseDependencyGraph courseGraph = BuildGraphDataStructure(courses, courseDependencies);
return(OrderCourses(courseGraph.GetNodes()));
}