public void PagingPastEndSkippingLastPageKnownTotalItemCount()
{
Catalog context = new Catalog();
EnqueueCallback(() =>
{
this._dds.PageSize = 5;
this._dds.QueryName = "GetPurchaseOrdersQuery";
this._dds.DomainContext = context;
this._dds.Load();
});
this.AssertLoadingData();
this.AssertPageChanged();
int totalItemCount = 0;
EnqueueCallback(() =>
{
this.ResetLoadState();
this.ResetPageChanged();
Assert.AreEqual(5, this._view.Count, "Count after the initial load");
Assert.AreEqual(0, this._view.PageIndex, "PageIndex after the initial load");
Assert.IsTrue(this._view.TotalItemCount > this._view.Count, "After the initial load, TotalItemCount is expected to be greater than the Count");
Assert.IsTrue(this._view.PageCount > 0, "After the initial load, PageCount is expected to be greater than 0");
totalItemCount = this._view.TotalItemCount;
// Move well beyond the end
this._view.MoveToPage(this._view.PageCount + 100);
});
this.AssertLoadingData(2);
this.AssertPageChanged();
EnqueueCallback(() =>
{
this.ResetLoadState();
this.ResetPageChanged();
int countOnLastPage = this._view.TotalItemCount % this._view.PageSize;
if (countOnLastPage == 0)
{
countOnLastPage = this._view.PageSize;
}
Assert.AreEqual(countOnLastPage, this._view.Count, "Count after changing page");
Assert.AreEqual(PagingHelper.CalculatePageCount(this._view.TotalItemCount, this._view.PageSize) - 1, this._view.PageIndex, "PageIndex after changing page");
Assert.AreEqual(totalItemCount, this._view.TotalItemCount, "TotalItemCount after changing page");
});
EnqueueTestComplete();
}
public void CountPropertiesAvailableWithinLoadedDataWithPaging()
{
// Catalog supports TotalItemCount without loading all data (CityDomainContext does not)
Catalog context = new Catalog();
this._dds.LoadedData += (s, e) =>
{
Assert.AreEqual<int>(5, this._view.Count, "Count");
Assert.AreNotEqual<int>(0, this._view.TotalItemCount, "TotalItemCount");
Assert.AreNotEqual<int>(0, this._pagedCollectionView.ItemCount, "ItemCount (IPagedCollectionView)");
};
EnqueueCallback(() =>
{
this._dds.QueryName = "GetProducts";
this._dds.DomainContext = context;
this._dds.PageSize = 5;
this._dds.Load();
});
this.AssertLoadingData();
EnqueueTestComplete();
}
public void IncludeTotalCountOverrideWhenPaging()
{
// Catalog supports total count
Catalog catalog = new Catalog();
bool defaultIncludeTotalCount = false;
int totalEntityCount = 0;
// When the LoadingData event is raised, we will capture the default
// value for IncludeTotalCount and then set it to true
this._dds.LoadingData += (s, e) =>
{
defaultIncludeTotalCount = e.Query.IncludeTotalCount;
e.Query.IncludeTotalCount = false;
};
// When the LoadedData event is raised, we will capture the
// TotalEntityCount to ensure it was set
this._dds.LoadedData += (s, e) =>
{
totalEntityCount = e.TotalEntityCount;
};
EnqueueCallback(() =>
{
this._dds.AutoLoad = false;
this._dds.DomainContext = catalog;
this._dds.QueryName = "GetProducts";
this._dds.PageSize = 5;
this._dds.Load();
});
this.AssertLoadingData();
EnqueueCallback(() =>
{
Assert.IsTrue(defaultIncludeTotalCount, "IncludeTotalCount should have been true by default");
Assert.AreEqual(-1, totalEntityCount, "The TotalEntityCount should not have been included");
});
EnqueueTestComplete();
}
public void CountPropertiesRefreshedWithLoadAfterEmptyLoad()
{
// Catalog supports TotalItemCount without loading all data (CityDomainContext does not)
Catalog context = new Catalog();
int totalItemCountExpected = -1;
Dictionary<string, int> propertiesChanged = new Dictionary<string, int>();
EnqueueCallback(() =>
{
this._dds.QueryName = "GetProducts";
this._dds.DomainContext = context;
this._dds.PageSize = 2;
// Apply a filter that will guarantee an empty load
this._dds.FilterDescriptors.Add(new FilterDescriptor("Name", FilterOperator.IsEqualTo, Guid.NewGuid().ToString()));
this._dds.Load();
});
this.AssertLoadingData();
this.AssertPageChanged();
EnqueueCallback(() =>
{
this.ResetLoadState();
this.ResetPageChanged();
Assert.AreEqual<int>(1, this._view.PageCount, "PageCount after the empty load");
Assert.AreEqual<int>(0, this._view.TotalItemCount, "TotalItemCount after the empty load");
// Overwrite the filter with one that will guarantee all data is loaded
this._dds.FilterDescriptors[0] = new FilterDescriptor("Name", FilterOperator.IsNotEqualTo, Guid.NewGuid().ToString());
// When this data is loaded, set the expectation for TotalItemCount
this._dds.LoadedData += (s, e) => totalItemCountExpected = e.TotalEntityCount;
((INotifyPropertyChanged)this._view).PropertyChanged += (s, e) =>
{
if (!propertiesChanged.ContainsKey(e.PropertyName))
{
propertiesChanged.Add(e.PropertyName, 1);
}
else
{
propertiesChanged[e.PropertyName] = propertiesChanged[e.PropertyName] + 1;
}
};
this._viewPageChangedExpected = 0;
this._asyncEventFailureMessage = "Full load";
this._dds.Load();
});
this.AssertLoadingData();
EnqueueCallback(() =>
{
this.ResetLoadState();
// This test isn't valid unless more than 1 page of data was loaded
if (this._view.TotalItemCount == context.Products.Count)
{
Assert.Inconclusive("TotalItemCount must be greater than the number of products loaded in order for this to be a valid test.");
}
Assert.AreEqual<int>(totalItemCountExpected, this._view.TotalItemCount, "TotalItemCount after full load");
Assert.IsTrue(propertiesChanged.ContainsKey("TotalItemCount"), "TotalItemCount should have had a property changed notification");
Assert.AreEqual<int>(1, propertiesChanged["TotalItemCount"], "TotalItemCount property changed notifications");
Assert.AreEqual<int>(totalItemCountExpected, this._pagedCollectionView.ItemCount, "ItemCount after full load");
Assert.IsTrue(propertiesChanged.ContainsKey("ItemCount"), "ItemCount should have had a property changed notification");
Assert.AreEqual<int>(1, propertiesChanged["ItemCount"], "ItemCount property changed notifications");
int pageCount = PagingHelper.CalculatePageCount(this._view.TotalItemCount, this._dds.PageSize);
Assert.AreEqual<int>(pageCount, this._view.PageCount, "PageCount after full load");
Assert.IsTrue(propertiesChanged.ContainsKey("PageCount"), "PageCount should have had a property changed notification");
Assert.AreEqual<int>(1, propertiesChanged["PageCount"], "PageCount property changed notifications");
});
EnqueueTestComplete();
}
