public void TestSelfDependency()
{
JobSorter theSorter = new JobSorter();
string jobList = "a =>, b =>, c => c";
string orderedList = "";
var ex = Assert.ThrowsException <Exception>(() => orderedList = theSorter.SortJobs(jobList));
Assert.AreEqual("Jobs can't depend on themselves.", ex.Message);
}
public void TestCircularDependenciesInDifferentOrder()
{
// The job list is the same as for TestCircularDependencies above but in a different order
JobSorter theSorter = new JobSorter();
string jobList = "d => a, a => , f => b, c => f, e => , b => c";
string orderedList = "";
var ex = Assert.ThrowsException <Exception>(() => orderedList = theSorter.SortJobs(jobList));
Assert.AreEqual("Jobs can't have circular dependencies.", ex.Message);
}