public void MultipleTasksCanMakeChangesConcurrently()
{
var diffSet = new DiffSet <int>(Enumerable.Range(0, 100));
var diffPair = diffSet.GetDiff();
Assert.Equal(100, diffPair.Added.Count);
Assert.Equal(0, diffPair.Removed.Count);
Assert.True(diffPair.Reset);
var tasks = new[] {
Task.Factory.StartNew(() =>
{
for (int i = 0; i < 50; i++)
{
Assert.True(diffSet.Remove(i));
}
}),
Task.Factory.StartNew(() =>
{
for (int i = 100; i < 150; i++)
{
Assert.True(diffSet.Add(i));
}
})
};
Task.WaitAll(tasks);
Assert.Equal(100, diffSet.GetSnapshot().Count);
for (int i = 50; i < 150; i++)
{
Assert.True(diffSet.Contains(i));
}
diffPair = diffSet.GetDiff();
Assert.Equal(50, diffPair.Added.Count);
Assert.Equal(50, diffPair.Removed.Count);
Assert.False(diffPair.Reset);
for (int i = 0; i < 50; i++)
{
Assert.False(diffSet.Contains(i));
Assert.False(diffPair.Added.Contains(i));
Assert.True(diffPair.Removed.Contains(i));
}
for (int i = 50; i < 100; i++)
{
Assert.True(diffSet.Contains(i));
Assert.False(diffPair.Added.Contains(i));
Assert.False(diffPair.Removed.Contains(i));
}
for (int i = 100; i < 50; i++)
{
Assert.True(diffSet.Contains(i));
Assert.True(diffPair.Added.Contains(i));
Assert.False(diffPair.Removed.Contains(i));
}
}
public void AddingAndRemovingSameItemMultipleTimesShowsUpOnceInTheDiff()
{
var diffSet = new DiffSet <int>(Enumerable.Range(0, 100));
Assert.False(diffSet.Add(0)); // no-op
Assert.True(diffSet.Remove(99));
Assert.False(diffSet.Remove(99)); // no-op
Assert.Equal(99, diffSet.GetSnapshot().Count);
var diffPair = diffSet.GetDiff();
Assert.Equal(99, diffPair.Added.Count);
Assert.Equal(0, diffPair.Removed.Count);
Assert.True(diffPair.Reset);
for (int i = 0; i < 99; i++)
{
Assert.True(diffPair.Added.Contains(i));
Assert.True(diffSet.Contains(i));
}
Assert.False(diffSet.Add(1)); // no-op
Assert.True(diffSet.Add(99));
Assert.False(diffSet.Add(99)); // no-op
Assert.False(diffSet.Remove(101)); // no-op
Assert.True(diffSet.Remove(0));
Assert.False(diffSet.Remove(0)); // no-op
Assert.Equal(99, diffSet.GetSnapshot().Count);
diffPair = diffSet.GetDiff();
Assert.Equal(1, diffPair.Added.Count);
Assert.Equal(1, diffPair.Removed.Count);
Assert.False(diffPair.Reset);
Assert.True(diffPair.Added.Contains(99));
Assert.True(diffPair.Removed.Contains(0));
for (int i = 1; i < 100; i++)
{
Assert.True(diffSet.Contains(i));
}
}
public void AddingAndRemovingSameItemDoesNotShowUpInDiff()
{
var diffSet = new DiffSet <int>(Enumerable.Range(0, 100));
Assert.True(diffSet.Add(100));
Assert.True(diffSet.Remove(98));
Assert.True(diffSet.Remove(99));
Assert.True(diffSet.Remove(100));
Assert.True(diffSet.Add(99));
Assert.True(diffSet.Add(98));
Assert.Equal(100, diffSet.GetSnapshot().Count);
var diffPair = diffSet.GetDiff();
Assert.Equal(100, diffPair.Added.Count);
Assert.Equal(0, diffPair.Removed.Count);
Assert.True(diffPair.Reset);
for (int i = 0; i < 100; i++)
{
Assert.True(diffPair.Added.Contains(i));
Assert.True(diffSet.Contains(i));
}
Assert.True(diffSet.Add(150));
Assert.True(diffSet.Add(200));
Assert.True(diffSet.Remove(50));
Assert.True(diffSet.Remove(200));
Assert.True(diffSet.Remove(150));
Assert.True(diffSet.Add(50));
Assert.Equal(100, diffSet.GetSnapshot().Count);
diffPair = diffSet.GetDiff();
Assert.Equal(0, diffPair.Added.Count);
Assert.Equal(0, diffPair.Removed.Count);
Assert.False(diffPair.Reset);
for (int i = 0; i < 100; i++)
{
Assert.True(diffSet.Contains(i));
}
}
public void AddingAndRemovingSameItemDoesNotShowUpInDiff()
{
// (0-100)
var diffSet = new DiffSet <int>(Enumerable.Range(0, 100));
Assert.True(diffSet.Add(100));
Assert.True(diffSet.Remove(98));
Assert.True(diffSet.Remove(99));
Assert.True(diffSet.Remove(100));
Assert.True(diffSet.Add(99));
Assert.True(diffSet.Add(98));
Assert.Equal(100, diffSet.GetSnapshot().Count);
// (0-100)
var changes = diffSet.DetectChanges();
Assert.False(changes);
for (int i = 0; i < 100; i++)
{
Assert.True(diffSet.Contains(i));
}
Assert.True(diffSet.Add(150));
Assert.True(diffSet.Add(200));
Assert.True(diffSet.Remove(50));
Assert.True(diffSet.Remove(200));
Assert.True(diffSet.Remove(150));
Assert.True(diffSet.Add(50));
Assert.Equal(100, diffSet.GetSnapshot().Count);
changes = diffSet.DetectChanges();
Assert.False(changes);
for (int i = 0; i < 100; i++)
{
Assert.True(diffSet.Contains(i));
}
}
public void AddingAndRemovingSameItemDoesNotShowUpInDiff()
{
var diffSet = new DiffSet<int>(Enumerable.Range(0, 100));
Assert.True(diffSet.Add(100));
Assert.True(diffSet.Remove(98));
Assert.True(diffSet.Remove(99));
Assert.True(diffSet.Remove(100));
Assert.True(diffSet.Add(99));
Assert.True(diffSet.Add(98));
Assert.Equal(100, diffSet.GetSnapshot().Count);
var diffPair = diffSet.GetDiff();
Assert.Equal(100, diffPair.Added.Count);
Assert.Equal(0, diffPair.Removed.Count);
Assert.True(diffPair.Reset);
for (int i = 0; i < 100; i++)
{
Assert.True(diffPair.Added.Contains(i));
Assert.True(diffSet.Contains(i));
}
Assert.True(diffSet.Add(150));
Assert.True(diffSet.Add(200));
Assert.True(diffSet.Remove(50));
Assert.True(diffSet.Remove(200));
Assert.True(diffSet.Remove(150));
Assert.True(diffSet.Add(50));
Assert.Equal(100, diffSet.GetSnapshot().Count);
diffPair = diffSet.GetDiff();
Assert.Equal(0, diffPair.Added.Count);
Assert.Equal(0, diffPair.Removed.Count);
Assert.False(diffPair.Reset);
for (int i = 0; i < 100; i++)
{
Assert.True(diffSet.Contains(i));
}
}
public void AddingAndRemovingSameItemMultipleTimesShowsUpOnceInTheDiff()
{
var diffSet = new DiffSet<int>(Enumerable.Range(0, 100));
Assert.False(diffSet.Add(0)); // no-op
Assert.True(diffSet.Remove(99));
Assert.False(diffSet.Remove(99)); // no-op
Assert.Equal(99, diffSet.GetSnapshot().Count);
var diffPair = diffSet.GetDiff();
Assert.Equal(99, diffPair.Added.Count);
Assert.Equal(0, diffPair.Removed.Count);
for (int i = 0; i < 99; i++)
{
Assert.True(diffPair.Added.Contains(i));
Assert.True(diffSet.Contains(i));
}
Assert.False(diffSet.Add(1)); // no-op
Assert.True(diffSet.Add(99));
Assert.False(diffSet.Add(99)); // no-op
Assert.False(diffSet.Remove(101)); // no-op
Assert.True(diffSet.Remove(0));
Assert.False(diffSet.Remove(0)); // no-op
Assert.Equal(99, diffSet.GetSnapshot().Count);
diffPair = diffSet.GetDiff();
Assert.Equal(1, diffPair.Added.Count);
Assert.Equal(1, diffPair.Removed.Count);
Assert.True(diffPair.Added.Contains(99));
Assert.True(diffPair.Removed.Contains(0));
for (int i = 1; i < 100; i++)
{
Assert.True(diffSet.Contains(i));
}
}
public void DetectChangesReturnsFalseNotChangedAgain()
{
var diffSet = new DiffSet<int>(new[] { 1 });
diffSet.Remove(1);
diffSet.Add(1);
var result = diffSet.DetectChanges();
var items = diffSet.GetSnapshot().ToList();
Assert.False(result);
Assert.Equal(1, items[0]);
Assert.Equal(1, items.Count);
}
public void DetectChangesReturnsTrueIfNoneToSome()
{
var diffSet = new DiffSet<int>(Enumerable.Empty<int>());
diffSet.Add(1);
diffSet.Remove(1);
diffSet.Add(5);
var result = diffSet.DetectChanges();
var items = diffSet.GetSnapshot().ToList();
Assert.True(result);
Assert.Equal(5, items[0]);
}
public void DetectChangesReturnsTrueIfNoneToSome()
{
var diffSet = new DiffSet <int>(Enumerable.Empty <int>());
diffSet.Add(1);
diffSet.Remove(1);
diffSet.Add(5);
var result = diffSet.DetectChanges();
var items = diffSet.GetSnapshot().ToList();
Assert.True(result);
Assert.Equal(5, items[0]);
}
public void DetectChangesReturnsFalseNotChangedAgain()
{
var diffSet = new DiffSet <int>(new[] { 1 });
diffSet.Remove(1);
diffSet.Add(1);
var result = diffSet.DetectChanges();
var items = diffSet.GetSnapshot().ToList();
Assert.False(result);
Assert.Equal(1, items[0]);
Assert.Equal(1, items.Count);
}
public void InitializeDiffSetWithChangingIEnumerable()
{
var diffSet = new DiffSet <int>(new NonResettingEnumerator().Ints(5));
Assert.Equal(5, diffSet.GetSnapshot().Count);
for (int i = 0; i < 5; i++)
{
Assert.True(diffSet.Contains(i));
}
var diffPair = diffSet.GetDiff();
Assert.Equal(5, diffSet.GetSnapshot().Count);
Assert.Equal(5, diffPair.Added.Count);
Assert.Equal(0, diffPair.Removed.Count);
Assert.True(diffPair.Reset);
for (int i = 0; i < 5; i++)
{
Assert.True(diffSet.Contains(i));
Assert.True(diffPair.Added.Contains(i));
Assert.False(diffPair.Removed.Contains(i));
}
}
public void InitialValueCombineWithChangesInFirstDiff()
{
var diffSet = new DiffSet <int>(Enumerable.Range(0, 100));
Assert.True(diffSet.Add(-1));
Assert.True(diffSet.Add(100));
Assert.True(diffSet.Remove(0));
Assert.True(diffSet.Remove(-1));
Assert.Equal(100, diffSet.GetSnapshot().Count);
var changes = diffSet.DetectChanges();
var items = diffSet.GetSnapshot();
Assert.True(changes);
Assert.Equal(100, items.Count);
Assert.False(diffSet.Contains(0));
for (int i = 1; i <= 100; i++)
{
Assert.True(diffSet.Contains(i));
}
}
public void DiffPairMatchesSnapshotAfterConcurrentChanges()
{
var random = new Random();
var diffSet = new DiffSet <int>(Enumerable.Range(0, 5));
var localSet = new HashSet <int>(Enumerable.Range(0, 5));
Action updateSet = () =>
{
for (int i = 0; i < 100; i++)
{
if (random.Next(2) == 1)
{
diffSet.Remove(random.Next(5));
}
else
{
diffSet.Add(random.Next(5));
}
}
};
// Flush initial changes
var diffPair = diffSet.GetDiff();
Assert.Equal(5, diffPair.Added.Count);
Assert.Equal(0, diffPair.Removed.Count);
Assert.True(diffPair.Reset);
for (int i = 0; i < 10; i++)
{
Task.WaitAll(Enumerable.Repeat(updateSet, 10).Select(Task.Factory.StartNew).ToArray());
var snapShot = diffSet.GetSnapshot();
diffPair = diffSet.GetDiff();
Assert.False(diffPair.Reset);
Assert.Equal(0, diffPair.Added.Intersect(diffPair.Removed).Count());
foreach (var addedItem in diffPair.Added)
{
Assert.True(localSet.Add(addedItem));
}
foreach (var removedItem in diffPair.Removed)
{
Assert.True(localSet.Remove(removedItem));
}
int numSharedItems = localSet.Intersect(snapShot).Count();
Assert.Equal(numSharedItems, snapShot.Count);
Assert.Equal(numSharedItems, localSet.Count);
}
}
public void DetectChangesReturnsTrueIfItemsNotAlreadyInSet()
{
var diffSet = new DiffSet<int>(new[] { 0, 10, 20 });
diffSet.Add(50);
diffSet.Add(10);
diffSet.Add(30);
diffSet.Remove(10);
var result = diffSet.DetectChanges();
var list = diffSet.GetSnapshot().OrderBy(i => i).ToList();
Assert.True(result);
Assert.Equal(4, list.Count);
Assert.Equal(0, list[0]);
Assert.Equal(20, list[1]);
Assert.Equal(30, list[2]);
Assert.Equal(50, list[3]);
}
public void DetectChangesReturnsTrueIfItemsNotAlreadyInSet()
{
var diffSet = new DiffSet <int>(new[] { 0, 10, 20 });
diffSet.Add(50);
diffSet.Add(10);
diffSet.Add(30);
diffSet.Remove(10);
var result = diffSet.DetectChanges();
var list = diffSet.GetSnapshot().OrderBy(i => i).ToList();
Assert.True(result);
Assert.Equal(4, list.Count);
Assert.Equal(0, list[0]);
Assert.Equal(20, list[1]);
Assert.Equal(30, list[2]);
Assert.Equal(50, list[3]);
}
public void InitialValueCombineWithChangesInFirstDiff()
{
var diffSet = new DiffSet <int>(Enumerable.Range(0, 100));
Assert.True(diffSet.Add(-1));
Assert.True(diffSet.Add(100));
Assert.True(diffSet.Remove(0));
Assert.True(diffSet.Remove(-1));
Assert.Equal(100, diffSet.GetSnapshot().Count);
var diffPair = diffSet.GetDiff();
Assert.Equal(100, diffPair.Added.Count);
Assert.Equal(0, diffPair.Removed.Count);
Assert.True(diffPair.Reset);
for (int i = 1; i <= 100; i++)
{
Assert.True(diffPair.Added.Contains(i));
Assert.True(diffSet.Contains(i));
}
}
internal static void PopulateResponseState(PersistentResponse response,
DiffSet<string> groupSet,
IJsonSerializer serializer,
IProtectedData protectedData)
{
DiffPair<string> groupDiff = groupSet.GetDiff();
if (groupDiff.AnyChanges)
{
// Create a protected payload of the sorted list
IEnumerable<string> groups = groupSet.GetSnapshot();
// No groups so do nothing
if (groups.Any())
{
// Remove group prefixes before any thing goes over the wire
string groupsString = serializer.Stringify(PrefixHelper.RemoveGroupPrefixes(groups));
// The groups token
response.GroupsToken = protectedData.Protect(groupsString, Purposes.Groups);
}
}
}
public void InitialValueCombineWithChangesInFirstDiff()
{
var diffSet = new DiffSet<int>(Enumerable.Range(0, 100));
Assert.True(diffSet.Add(-1));
Assert.True(diffSet.Add(100));
Assert.True(diffSet.Remove(0));
Assert.True(diffSet.Remove(-1));
Assert.Equal(100, diffSet.GetSnapshot().Count);
var changes = diffSet.DetectChanges();
var items = diffSet.GetSnapshot();
Assert.True(changes);
Assert.Equal(100, items.Count);
Assert.False(diffSet.Contains(0));
for (int i = 1; i <= 100; i++)
{
Assert.True(diffSet.Contains(i));
}
}
public void DiffPairMatchesSnapshotAfterConcurrentChanges()
{
var random = new Random();
var diffSet = new DiffSet<int>(Enumerable.Range(0, 5));
var localSet = new HashSet<int>(Enumerable.Range(0, 5));
Action updateSet = () =>
{
for (int i = 0; i < 100; i++)
{
if (random.Next(2) == 1)
{
diffSet.Remove(random.Next(5));
}
else
{
diffSet.Add(random.Next(5));
}
}
};
// Flush initial changes
var diffPair = diffSet.GetDiff();
Assert.Equal(5, diffPair.Added.Count);
Assert.Equal(0, diffPair.Removed.Count);
Assert.True(diffPair.Reset);
for (int i = 0; i < 10; i++)
{
Task.WaitAll(Enumerable.Repeat(updateSet, 10).Select(Task.Factory.StartNew).ToArray());
var snapShot = diffSet.GetSnapshot();
diffPair = diffSet.GetDiff();
Assert.False(diffPair.Reset);
Assert.Equal(0, diffPair.Added.Intersect(diffPair.Removed).Count());
foreach (var addedItem in diffPair.Added)
{
Assert.True(localSet.Add(addedItem));
}
foreach (var removedItem in diffPair.Removed)
{
Assert.True(localSet.Remove(removedItem));
}
int numSharedItems = localSet.Intersect(snapShot).Count();
Assert.Equal(numSharedItems, snapShot.Count);
Assert.Equal(numSharedItems, localSet.Count);
}
}
public void AddingAndRemovingSameItemDoesNotShowUpInDiff()
{
// (0-100)
var diffSet = new DiffSet<int>(Enumerable.Range(0, 100));
Assert.True(diffSet.Add(100));
Assert.True(diffSet.Remove(98));
Assert.True(diffSet.Remove(99));
Assert.True(diffSet.Remove(100));
Assert.True(diffSet.Add(99));
Assert.True(diffSet.Add(98));
Assert.Equal(100, diffSet.GetSnapshot().Count);
// (0-100)
var changes = diffSet.DetectChanges();
Assert.False(changes);
for (int i = 0; i < 100; i++)
{
Assert.True(diffSet.Contains(i));
}
Assert.True(diffSet.Add(150));
Assert.True(diffSet.Add(200));
Assert.True(diffSet.Remove(50));
Assert.True(diffSet.Remove(200));
Assert.True(diffSet.Remove(150));
Assert.True(diffSet.Add(50));
Assert.Equal(100, diffSet.GetSnapshot().Count);
changes = diffSet.DetectChanges();
Assert.False(changes);
for (int i = 0; i < 100; i++)
{
Assert.True(diffSet.Contains(i));
}
}
internal static void PopulateResponseState(PersistentResponse response,
DiffSet<string> groupSet,
IJsonSerializer serializer,
IProtectedData protectedData,
string connectionId)
{
bool anyChanges = groupSet.DetectChanges();
if (anyChanges)
{
// Create a protected payload of the sorted list
IEnumerable<string> groups = groupSet.GetSnapshot();
// Remove group prefixes before any thing goes over the wire
string groupsString = connectionId + ':' + serializer.Stringify(PrefixHelper.RemoveGroupPrefixes(groups)); ;
// The groups token
response.GroupsToken = protectedData.Protect(groupsString, Purposes.Groups);
}
}
public void MultipleTasksCanMakeChangesConcurrently()
{
var diffSet = new DiffSet<int>(Enumerable.Range(0, 100));
var diffPair = diffSet.GetDiff();
Assert.Equal(100, diffPair.Added.Count);
Assert.Equal(0, diffPair.Removed.Count);
Assert.True(diffPair.Reset);
var tasks = new[] {
Task.Factory.StartNew(() =>
{
for (int i = 0; i < 50; i++)
{
Assert.True(diffSet.Remove(i));
}
}),
Task.Factory.StartNew(() =>
{
for (int i = 100; i < 150; i++)
{
Assert.True(diffSet.Add(i));
}
})
};
Task.WaitAll(tasks);
Assert.Equal(100, diffSet.GetSnapshot().Count);
for (int i = 50; i < 150; i++)
{
Assert.True(diffSet.Contains(i));
}
diffPair = diffSet.GetDiff();
Assert.Equal(50, diffPair.Added.Count);
Assert.Equal(50, diffPair.Removed.Count);
Assert.False(diffPair.Reset);
for (int i = 0; i < 50; i++)
{
Assert.False(diffSet.Contains(i));
Assert.False(diffPair.Added.Contains(i));
Assert.True(diffPair.Removed.Contains(i));
}
for (int i = 50; i < 100; i++)
{
Assert.True(diffSet.Contains(i));
Assert.False(diffPair.Added.Contains(i));
Assert.False(diffPair.Removed.Contains(i));
}
for (int i = 100; i < 50; i++)
{
Assert.True(diffSet.Contains(i));
Assert.True(diffPair.Added.Contains(i));
Assert.False(diffPair.Removed.Contains(i));
}
}
public void InitialValueCombineWithChangesInFirstDiff()
{
var diffSet = new DiffSet<int>(Enumerable.Range(0, 100));
Assert.True(diffSet.Add(-1));
Assert.True(diffSet.Add(100));
Assert.True(diffSet.Remove(0));
Assert.True(diffSet.Remove(-1));
Assert.Equal(100, diffSet.GetSnapshot().Count);
var diffPair = diffSet.GetDiff();
Assert.Equal(100, diffPair.Added.Count);
Assert.Equal(0, diffPair.Removed.Count);
Assert.True(diffPair.Reset);
for (int i = 1; i <= 100; i++)
{
Assert.True(diffPair.Added.Contains(i));
Assert.True(diffSet.Contains(i));
}
}
public void InitializeDiffSetWithChangingIEnumerable()
{
var diffSet = new DiffSet<int>(new NonResettingEnumerator().Ints(5));
Assert.Equal(5, diffSet.GetSnapshot().Count);
for (int i = 0; i < 5; i++ )
{
Assert.True(diffSet.Contains(i));
}
var diffPair = diffSet.GetDiff();
Assert.Equal(5, diffSet.GetSnapshot().Count);
Assert.Equal(5, diffPair.Added.Count);
Assert.Equal(0, diffPair.Removed.Count);
Assert.True(diffPair.Reset);
for (int i = 0; i < 5; i++)
{
Assert.True(diffSet.Contains(i));
Assert.True(diffPair.Added.Contains(i));
Assert.False(diffPair.Removed.Contains(i));
}
}