public async Task BuildingCollectionWith6969Elements_Reset_SwitchedCountFetchingCountAdjusted(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
bool switched = false;
int CountFetcher() =>
switched
? 9
: 6969;
using var collection = SlidingWindowFactory.CreateCollectionWithCustomCountFetcher(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
CountFetcher,
10,
10,
69);
await collection.InitializationCompleted;
var _ = collection[0];
await Task.Delay(50);
switched = true;
// Act
collection.Reset();
await Task.Delay(50);
var __ = collection[0];
await Task.Delay(50);
// Assert
Assert.Equal(0, collection[0]);
Assert.Equal(9, collection.Count);
}
internal static IDataVirtualizingCollection <int> CreateCollectionWithIncrementalIntegerWhereFetchersIgnorePageSize(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior,
int count,
int pageSize,
IScheduler scheduler)
{
var pageLoadingBehaviorCollectionBuilder = DataVirtualizingCollectionBuilder.Build <int>(
pageSize,
new EventLoopScheduler(),
scheduler);
var pageHoldingBehaviorCollectionBuilder =
StandardPageHoldingBehaviorCollectionBuilder(
pageLoadingBehaviorCollectionBuilder,
pageLoadingBehavior,
(_, __) => - 1);
var fetchersKindCollectionBuilder =
StandardFetcherKindCollectionBuilder(
pageHoldingBehaviorCollectionBuilder,
pageRemovalBehavior,
10,
1);
var indexAccessBehaviorCollectionBuilder =
StandardIndexAccessBehaviorCollectionBuilder(
fetchersKindCollectionBuilder,
fetchersKind,
(offset, pSize) =>
Enumerable
.Range(offset, pageSize) // <--- This is different! pageSize instead of pSize!
.ToArray(),
() => count);
var dataVirtualizingCollection =
StandardDataVirtualizingCollection(
indexAccessBehaviorCollectionBuilder,
indexAccessBehavior,
() => - 1);
return(dataVirtualizingCollection);
}
public void BuildingCollectionWith6969Elements_6001thEntry_6000(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
using var collection = SlidingWindowFactory.CreateCollectionWithIncrementalInteger(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
6969,
100,
10,
6000);
// Act + Assert
Assert.Equal(6000, collection[0]);
}
public void BuildingCollectionWherePageFetcherIgnoresGivenPageSize23_70thEntry_69(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
using var collection = SlidingWindowFactory.CreateCollectionWithIncrementalIntegerWhereFetchersIgnorePageSize(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
6969,
23,
10,
60);
// Act + Assert
Assert.Equal(69, collection[9]);
}
public void BuildingCollectionWith6969Elements_MinusFirstEntry_ThrowsIndexOutOfRangeException(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
using var collection = SlidingWindowFactory.CreateCollectionWithIncrementalInteger(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
6969,
100,
10,
6959);
// Act + Assert
Assert.Throws <IndexOutOfRangeException>(() => collection[-1]);
}
public async Task BuildingCollectionWith6969Elements_MinusFirstEntry_ThrowsIndexOutOfRangeException(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
using var collection = DataVirtualizingCollectionFactory.CreateCollectionWithIncrementalInteger(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
6969,
100);
await collection.InitializationCompleted;
// Act + Assert
Assert.Throws <IndexOutOfRangeException>(() => collection[-1]);
}
internal static IDataVirtualizingCollection <T> CreateCollectionWithCustomPageFetchingLogic <T>(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior,
int count,
int pageSize,
Func <int, int, T[]> pageFetchingLogic,
T placeholder,
IScheduler scheduler)
{
var pageLoadingBehaviorCollectionBuilder = DataVirtualizingCollectionBuilder.Build <T>(
pageSize,
new EventLoopScheduler(),
scheduler);
var pageHoldingBehaviorCollectionBuilder =
StandardPageHoldingBehaviorCollectionBuilder(
pageLoadingBehaviorCollectionBuilder,
pageLoadingBehavior,
(_, __) => placeholder);
var fetchersKindCollectionBuilder =
StandardFetcherKindCollectionBuilder(
pageHoldingBehaviorCollectionBuilder,
pageRemovalBehavior,
10,
1);
var indexAccessBehaviorCollectionBuilder =
StandardIndexAccessBehaviorCollectionBuilder(
fetchersKindCollectionBuilder,
fetchersKind,
pageFetchingLogic,
() => count);
var dataVirtualizingCollection =
StandardDataVirtualizingCollection(
indexAccessBehaviorCollectionBuilder,
indexAccessBehavior,
() => placeholder);
return(dataVirtualizingCollection);
}
public async Task BuildingCollectionWith6969Elements_6001thEntry_6000(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
var scheduler = new TestScheduler();
await using var collection = DataVirtualizingCollectionFactory.CreateCollectionWithIncrementalInteger(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
6969,
100,
scheduler);
// Act + Assert
Assert.Equal(6000, collection[6000]);
}
public async Task BuildingCollectionWherePageFetcherIgnoresGivenPageSize23_70thEntry_69(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
var scheduler = new TestScheduler();
await using var collection = DataVirtualizingCollectionFactory.CreateCollectionWithIncrementalIntegerWhereFetchersIgnorePageSize(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
6969,
23,
scheduler);
// Act + Assert
Assert.Equal(69, collection[69]);
}
public async Task BuildingCollectionWith6969Elements_6970thEntry_ThrowsIndexOutOfRangeException(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
var scheduler = new TestScheduler();
await using var collection = DataVirtualizingCollectionFactory.CreateCollectionWithIncrementalInteger(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
6969,
100,
scheduler);
// Act + Assert
Assert.Throws <IndexOutOfRangeException>(() => collection[6969]);
}
public async Task With6969ElementsAndPageSize1000_GetAnElementFromEachPage_NoneDisposed(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
var scheduler = new TestScheduler();
var set = new ConcurrentBag <int>();
await using var collection = DataVirtualizingCollectionFactory.CreateCollectionWithCustomPageFetchingLogic(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
6969,
10,
(offset, pSize) =>
Enumerable
.Range(offset, pSize)
.Select(i => Disposable.Create(() => set.Add(i)))
.ToArray(),
Disposable.Empty,
scheduler);
scheduler.AdvanceBy(20);
Assert.True(collection.InitializationCompleted.IsCompletedSuccessfully);
// Act
for (var i = 0; i <= 6900; i += 100)
{
var _ = collection[i];
}
await Task.Delay(TimeSpan.FromMilliseconds(50)).ConfigureAwait(false);
scheduler.AdvanceBy(20);
// Assert
Assert.Empty(set);
}
public async Task BuildingCollectionWith6969Elements_Reset_SwitchedPageFetching(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
var scheduler = new TestScheduler();
bool switched = false;
int[] PageFetcher(int offset, int size) =>
switched
? Enumerable.Range(offset + 1, size).ToArray()
: Enumerable.Range(offset, size).ToArray();
await using var collection = SlidingWindowFactory.CreateCollectionWithCustomPageFetchingLogic(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
6969,
10,
10,
69,
PageFetcher,
-1,
scheduler);
var previous = collection[0];
switched = true;
// Act
collection.Reset();
// Assert
Assert.Equal(69, previous);
Assert.Equal(70, collection[0]);
}
public async Task BuildingCollectionWith6969Elements_Reset_SwitchedCountFetchingCountAdjusted(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
var scheduler = new TestScheduler();
bool switched = false;
int CountFetcher() =>
switched
? 9
: 6969;
await using var collection = SlidingWindowFactory.CreateCollectionWithCustomCountFetcher(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
CountFetcher,
10,
10,
69,
scheduler);
var previous = collection[0];
switched = true;
// Act
collection.Reset();
// Assert
Assert.Equal(69, previous);
Assert.Equal(0, collection[0]);
Assert.Equal(9, collection.Count);
}
public async Task BuildingCollectionWith6969Elements_124thEntry_123(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
var scheduler = new TestScheduler();
await using var collection = SlidingWindowFactory.CreateCollectionWithIncrementalInteger(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
6969,
100,
10,
120,
scheduler);
// Act + Assert
Assert.Equal(123, collection[3]);
}
public void BuildingCollectionWith6969Elements_Offset69SlidingRight_Offset70(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
using var collection = SlidingWindowFactory.CreateCollectionWithIncrementalInteger(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
6969,
20,
10,
69);
// Act
collection.SlideRight();
// Assert
Assert.Equal(70, collection[0]);
}
public void BuildingCollectionWith6969Elements_Reset_NothingChanged(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
using var collection = SlidingWindowFactory.CreateCollectionWithIncrementalInteger(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
6969,
10,
10,
69);
// Act
collection.Reset();
// Assert
Assert.Equal(69, collection[0]);
}
public async Task With69ElementsAndPageSize10_GetAnElementFromEachPageDisposeCollection_AllDisposed(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
const int expected = 69;
var set = new ConcurrentBag <int>();
var collection = DataVirtualizingCollectionFactory.CreateCollectionWithCustomPageFetchingLogic(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
expected,
10,
(offset, pSize) =>
Enumerable
.Range(offset, pSize)
.Select(i => Disposable.Create(() => set.Add(i)))
.ToArray(),
Disposable.Empty);
await collection.InitializationCompleted;
// Act
for (var i = 0; i <= expected; i += 10)
{
var _ = collection[i];
await Task.Delay(50);
}
collection.Dispose();
await Task.Delay(50);
// Assert
Assert.Equal(expected, set.Count);
}
public async Task BuildingCollectionWith6969Elements_MinusFirstEntry_ThrowsIndexOutOfRangeException(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior)
{
// Arrange
var scheduler = new TestScheduler();
await using var collection = DataVirtualizingCollectionFactory.CreateCollectionWithIncrementalInteger(
pageLoadingBehavior,
pageRemovalBehavior,
fetchersKind,
indexAccessBehavior,
6969,
100,
scheduler);
scheduler.AdvanceBy(20);
Assert.True(collection.InitializationCompleted.IsCompletedSuccessfully);
// Act + Assert
Assert.Throws <IndexOutOfRangeException>(() => collection[-1]);
}
