public static void SkipWhile_AllTrue(Labeled <ParallelQuery <int> > labeled, int count, int skip)
{
ParallelQuery <int> query = labeled.Item;
IntegerRangeSet seen = new IntegerRangeSet(0, count);
Assert.Empty(query.SkipWhile(x => seen.Add(x)));
seen.AssertComplete();
}
public static void SkipWhile_SomeFalse(Labeled <ParallelQuery <int> > labeled, int count, IEnumerable <int> skip)
{
ParallelQuery <int> query = labeled.Item;
int seen = skip.Min();
Assert.All(query.SkipWhile(x => !skip.Contains(x)), x => Assert.Equal(seen++, x));
Assert.Equal(count, seen);
}
public static void SkipWhile_Indexed_NotPipelined(Labeled <ParallelQuery <int> > labeled, int count, int skip)
{
ParallelQuery <int> query = labeled.Item;
int seen = Math.Max(0, skip);
Assert.All(query.SkipWhile((x, index) => index < skip), x => Assert.Equal(seen++, x));
Assert.Equal(Math.Max(skip, count), seen);
}
public static void SkipWhile_AllFalse(Labeled <ParallelQuery <int> > labeled, int count, int skip)
{
ParallelQuery <int> query = labeled.Item;
int seen = 0;
Assert.All(query.SkipWhile(x => false), x => Assert.Equal(seen++, x));
Assert.Equal(count, seen);
}
public static void SkipWhile_SomeTrue(Labeled <ParallelQuery <int> > labeled, int count, int[] skip)
{
ParallelQuery <int> query = labeled.Item;
int seen = skip.Min() == 0 ? 1 : 0;
Assert.All(query.SkipWhile(x => skip.Contains(x)), x => Assert.Equal(seen++, x));
Assert.Equal(skip.Min() >= count ? 0 : count, seen);
}
public static void SkipWhile_Indexed_Unordered_NotPipelined(Labeled <ParallelQuery <int> > labeled, int count, int skip)
{
ParallelQuery <int> query = labeled.Item;
// For unordered collections, which elements (if any) are skipped isn't actually guaranteed, but an effect of the implementation.
// If this test starts failing it should be updated, and possibly mentioned in release notes.
IntegerRangeSet seen = new IntegerRangeSet(Math.Max(skip, 0), Math.Min(count, Math.Max(0, count - skip)));
Assert.All(query.SkipWhile((x, index) => index < skip), x => seen.Add(x));
seen.AssertComplete();
}
public static void SkipWhile_Indexed(Labeled <ParallelQuery <int> > labeled, int count, int skip)
{
ParallelQuery <int> query = labeled.Item;
int seen = Math.Max(0, skip);
foreach (int i in query.SkipWhile((x, index) => index < skip))
{
Assert.Equal(seen++, i);
}
Assert.Equal(Math.Max(skip, count), seen);
}
internal static ParallelQuery <int> MakeSkipWhileIndexed(bool orderPreserved)
{
int[] a = Enumerable.Range(-10, 110).ToArray();
ParallelQuery <int> ipe = a.AsParallel();
if (orderPreserved)
{
ipe = ipe.AsOrdered();
}
return(ipe.SkipWhile((i, j) => j < 10));
}
private static void RunAllTests(
TestTracker result, ParallelQuery <int> q, bool orderPreserved,
string leftOpName, bool leftOrderDefined)
{
LogTestRun(leftOpName, "All1", orderPreserved);
result.MustEqual(
q.All(i => i > 100),
q.ToArray().Any(i => i > 100));
LogTestRun(leftOpName, "All2", orderPreserved);
result.MustEqual(
q.All(i => i == 75),
q.ToArray().All(i => i == 75));
LogTestRun(leftOpName, "Any1", orderPreserved);
result.MustEqual(
q.Any(i => i > 100),
q.ToArray().Any(i => i > 100));
LogTestRun(leftOpName, "Any2", orderPreserved);
result.MustEqual(
q.Any(i => i == 75),
q.ToArray().Any(i => i == 75));
LogTestRun(leftOpName, "Concat", orderPreserved);
result.MustSequenceEqual(
q.Concat(q).Concat(new int[] { 1, 2, 3 }.AsParallel()),
q.Reverse().Reverse().ToArray().Concat(q.Reverse().Reverse()).Concat(new int[] { 1, 2, 3 }),
leftOrderDefined && orderPreserved);
LogTestRun(leftOpName, "DefaultIfEmpty", orderPreserved);
result.MustSequenceEqual(
q.DefaultIfEmpty(),
q.ToArray().DefaultIfEmpty(), orderPreserved && leftOrderDefined);
LogTestRun(leftOpName, "ElementAt", orderPreserved);
IEnumerable <int> q2 = q.ToArray();
int count1 = q.Count(), count2 = q2.Count();
List <int> list1 = new List <int>();
List <int> list2 = new List <int>();
for (int i = 0; i < count1; i++)
{
list1.Add(q.ElementAt(i));
}
for (int i = 0; i < count2; i++)
{
list2.Add(q2.ElementAt(i));
}
result.MustSequenceEqual(list1, list2, leftOrderDefined);
LogTestRun(leftOpName, "Except", orderPreserved);
result.MustSequenceEqual(
q.Except(Enumerable.Range(90, 50).AsParallel()),
q.ToArray().Except(Enumerable.Range(90, 50)),
false);
LogTestRun(leftOpName, "First", orderPreserved);
CheckFirstOrLast(
result,
q.First(),
q.ToArray().First(),
leftOrderDefined);
LogTestRun(leftOpName, "GroupBy", orderPreserved);
result.MustGroupByEqual(
q.GroupBy(i => i % 5, (i, e) => new Pair <int, IEnumerable <int> >(i, e)),
q.ToArray().GroupBy(i => i % 5, (i, e) => new Pair <int, IEnumerable <int> >(i, e)));
LogTestRun(leftOpName, "GroupJoin", orderPreserved);
result.MustSequenceEqual(
q.GroupJoin(q, i => i, i => i, (i, e) => e.FirstOrDefault()),
q.ToArray().GroupJoin(q.ToArray(), i => i, i => i, (i, e) => e.FirstOrDefault()),
false);
LogTestRun(leftOpName, "Intersect", orderPreserved);
result.MustSequenceEqual(
q.Intersect(Enumerable.Range(90, 50).AsParallel()),
q.ToArray().Intersect(Enumerable.Range(90, 50)),
false);
LogTestRun(leftOpName, "Join1", orderPreserved);
result.MustSequenceEqual(
q.Join((new int[] { 1, 1, 2, 3, 3 }).AsParallel(), i => i, i => i, (i, j) => i + j),
q.ToArray().Join(new int[] { 1, 1, 2, 3, 3 }, i => i, i => i, (i, j) => i + j),
false);
LogTestRun(leftOpName, "Join2", orderPreserved);
result.MustSequenceEqual(
q.Join((new int[] { 1, 1, 100, 3, 3 }).AsParallel(), i => new String('a', i), i => new String('a', i), (i, j) => i + j),
q.ToArray().Join(new int[] { 1, 1, 100, 3, 3 }, i => new String('a', i), i => new String('a', i), (i, j) => i + j),
false);
LogTestRun(leftOpName, "Last", orderPreserved);
CheckFirstOrLast(
result,
q.Last(),
q.ToArray().Last(),
leftOrderDefined);
LogTestRun(leftOpName, "Min", orderPreserved);
CheckFirstOrLast(
result,
q.Min(),
q.ToArray().Min(),
leftOrderDefined);
LogTestRun(leftOpName, "Max", orderPreserved);
CheckFirstOrLast(
result,
q.Min(),
q.ToArray().Min(),
leftOrderDefined);
LogTestRun(leftOpName, "OrderBy-ThenBy", orderPreserved);
result.MustSequenceEqual(
q.Concat(q).OrderBy(i => i % 5).ThenBy(i => - i),
q.ToArray().Concat(q).OrderBy(i => i % 5).ThenBy(i => - i),
true);
LogTestRun(leftOpName, "OrderByDescending-ThenByDescending", orderPreserved);
result.MustSequenceEqual(
q.Concat(q).OrderByDescending(i => i % 5).ThenByDescending(i => - i),
q.ToArray().Concat(q).OrderByDescending(i => i % 5).ThenByDescending(i => - i),
true);
LogTestRun(leftOpName, "Reverse", orderPreserved);
result.MustSequenceEqual(
q.Concat(q).Reverse(),
q.ToArray().Concat(q).Reverse(),
orderPreserved && leftOrderDefined);
LogTestRun(leftOpName, "Select", orderPreserved);
result.MustSequenceEqual(
q.Select(i => 5 * i - 17),
q.ToArray().Select(i => 5 * i - 17),
orderPreserved && leftOrderDefined);
LogTestRun(leftOpName, "SelectMany", orderPreserved);
result.MustSequenceEqual(
q.SelectMany(i => new int[] { 1, 2, 3 }, (i, j) => i + 100 * j),
q.ToArray().SelectMany(i => new int[] { 1, 2, 3 }, (i, j) => i + 100 * j),
false);
LogTestRun(leftOpName, "SequenceEqual", orderPreserved);
if (orderPreserved && leftOrderDefined)
{
result.MustEqual(q.SequenceEqual(q), true);
}
else
{
// We don't check the return value as it can be either true or false
q.SequenceEqual(q);
}
LogTestRun(leftOpName, "Skip", orderPreserved);
CheckTakeSkip(
result,
q.Skip(10),
q.ToArray().Skip(10),
leftOrderDefined && orderPreserved);
LogTestRun(leftOpName, "SkipWhile", orderPreserved);
CheckTakeSkip(
result,
q.SkipWhile(i => i < 30),
q.ToArray().SkipWhile(i => i < 30),
leftOrderDefined && orderPreserved);
LogTestRun(leftOpName, "SkipWhileIndexed", orderPreserved);
CheckTakeSkip(
result,
q.SkipWhile((i, j) => j < 30),
q.ToArray().SkipWhile((i, j) => j < 30),
leftOrderDefined && orderPreserved);
LogTestRun(leftOpName, "Take", orderPreserved);
CheckTakeSkip(
result,
q.Take(10),
q.ToArray().Take(10),
leftOrderDefined && orderPreserved);
LogTestRun(leftOpName, "TakeWhile", orderPreserved);
CheckTakeSkip(
result,
q.TakeWhile(i => i < 30),
q.ToArray().TakeWhile(i => i < 30),
leftOrderDefined && orderPreserved);
LogTestRun(leftOpName, "TakeWhileIndexed", orderPreserved);
CheckTakeSkip(
result,
q.TakeWhile((i, j) => j < 30),
q.ToArray().TakeWhile((i, j) => j < 30),
leftOrderDefined && orderPreserved);
LogTestRun(leftOpName, "Union", orderPreserved);
result.MustSequenceEqual(
q.Union(Enumerable.Range(90, 50).AsParallel()),
q.ToArray().Union(Enumerable.Range(90, 50)),
false);
LogTestRun(leftOpName, "Where", orderPreserved);
result.MustSequenceEqual(
q.Where(i => i < 20 || i > 80),
q.ToArray().Where(i => i < 20 || i > 80),
orderPreserved && leftOrderDefined);
LogTestRun(leftOpName, "Zip", orderPreserved);
IEnumerable <KeyValuePair <int, int> > zipQ = q.Zip(q, (i, j) => new KeyValuePair <int, int>(i, j));
result.MustSequenceEqual(
zipQ.Select(p => p.Key),
q.Reverse().Reverse().ToArray(),
orderPreserved && leftOrderDefined);
result.MustSequenceEqual(
zipQ.Select(p => p.Value),
q.Reverse().Reverse().ToArray(),
orderPreserved && leftOrderDefined);
}
/// <summary> /// Returns a new sequence containing all of the Phrases which follow the first Phrase in /// the source sequence which matches the provided selector function. /// </summary> /// <param name="phrases">The source sequence of Phrases.</param> /// <param name="startSelector"> /// The function which will select be used to select the exclusive lower bound of the new sequence. /// </param> /// <returns> /// A new sequence containing all of the Phrases which follow the first Phrase in the source /// sequence which matches the provided selector function.. /// </returns> public static ParallelQuery <Phrase> PhrasesAfter(this ParallelQuery <Phrase> phrases, Func <Phrase, bool> startSelector) => phrases.SkipWhile(r => !startSelector(r)).Skip(1);
/// <summary> /// Returns a new sequence containing all of the Phrases which follow the given Phrase in /// the source sequence. /// </summary> /// <param name="phrases">The source sequence of Phrases.</param> /// <param name="after">The exclusive lower bound of the desired subset of Phrases.</param> /// <returns> /// A new sequence containing all of the Phrases which follow the given Phrase in the source sequence. /// </returns> public static ParallelQuery <Phrase> PhrasesAfter(this ParallelQuery <Phrase> phrases, Phrase after) => phrases.SkipWhile(r => r != after).Skip(1);