public static void WhenArtSourceSometimesFailsTheRequestedNumberOfObjectsIsReturns()
{
Art.Object[] sourceObjects = new Art.Object[] { null, new Art.Object(), null, new Art.Object(), null, new Art.Object() };
MockArtSource sometimesFailSource = new MockArtSource(sourceObjects);
Art art = new Art(new IArtSource[] { sometimesFailSource });
IEnumerable <Art.Object> objects = art.GetRandomObjects(1);
Assert.Single(objects);
Assert.NotNull(objects.First());
}
public IEnumerable <Object> GetRandomObjects(int numObjects)
{
System.Random random = new System.Random();
IArtSource artSource = sources.RandomElement(random);
List <Art.Object> objects = new List <Art.Object>();
for (int numberOfTries = 0; objects.Count < numObjects && numberOfTries < (numObjects + 10); numberOfTries++)
{
Art.Object newObject = artSource.GetRandomObject(random);
if (newObject != null)
{
objects.Add(newObject);
}
}
return(objects);
}