public static void Single(Labeled <ParallelQuery <int> > labeled, int count, int element)
{
ParallelQuery <int> query = labeled.Item;
Assert.Equal(element, query.Single());
Assert.Equal(element, query.Single(x => true));
}
public static void Single_Empty(Labeled <ParallelQuery <int> > labeled, int count, int element)
{
ParallelQuery <int> query = labeled.Item;
Assert.Throws <InvalidOperationException>(() => query.Single());
Assert.Throws <InvalidOperationException>(() => query.Single(x => true));
}
public static void Single_NoMatch(Labeled <ParallelQuery <int> > labeled, int count, int element)
{
ParallelQuery <int> query = labeled.Item;
IntegerRangeSet seen = new IntegerRangeSet(0, count);
Assert.Throws <InvalidOperationException>(() => query.Single(x => !seen.Add(x)));
seen.AssertComplete();
}
public static void Single_OneMatch(Labeled <ParallelQuery <int> > labeled, int count, int element)
{
ParallelQuery <int> query = labeled.Item;
IntegerRangeSet seen = new IntegerRangeSet(0, count);
Assert.Equal(element, query.Single(x => seen.Add(x) && x == element));
seen.AssertComplete();
}