|
public FindShortestRouteBetweenAsync ( string fromCity, string toCity, TransportModes mode, IProgress |
||
| fromCity | string | |
| toCity | string | |
| mode | TransportModes | |
| reportProgress | IProgress |
|
| return | Task |
|
public async Task TestFindShortestRouteBetweenAsyncProgress()
{
var cities = new Cities();
cities.ReadCities(CitiesTestFile);
var routes = new Routes(cities);
routes.ReadRoutes(LinksTestFile);
// do synchronous execution
var linksExpected = routes.FindShortestRouteBetween("Basel", "Zürich", TransportMode.Rail);
// do asynchronous execution
var messages = new List<string>();
var progress = new Progress<string>(msg => messages.Add(msg));
var linksActual = await routes.FindShortestRouteBetweenAsync("Basel", "Zürich", TransportMode.Rail, progress);
// let pending tasks execute
await Task.Yield();
// ensure that at least 5 progress calls are made
Assert.IsTrue(messages.Distinct().Count()>=5, "Less than 5 distinct progress messages");
// ensure that all progress messages end with " done"
Assert.IsTrue(messages.All(m => m.EndsWith(" done")),
string.Format("Progress message \"{0}\" does not end with \" done\"",
messages.FirstOrDefault(m => !m.EndsWith(" done"))));
}
public async Task TestFindShortestRouteBetweenAsync()
{
var cities = new Cities();
cities.ReadCities(CitiesTestFile);
var routes = new Routes(cities);
routes.ReadRoutes(LinksTestFile);
// do synchronous execution
var linksExpected = routes.FindShortestRouteBetween("Basel", "Zürich", TransportMode.Rail);
// do asynchronous execution
var linksActual = await routes.FindShortestRouteBetweenAsync("Basel", "Zürich", TransportMode.Rail);
// now test the results
Assert.IsNotNull(linksActual);
Assert.AreEqual(linksExpected.Count, linksActual.Count);
for (int i = 0; i < linksActual.Count; i++)
{
Assert.AreEqual(linksExpected[i].FromCity, linksActual[i].FromCity);
Assert.AreEqual(linksExpected[i].ToCity, linksActual[i].ToCity);
}
}
