public async Task TakeLastSingle()
{
// arrange
var typeInspector = new DefaultTypeInspector();
IExtendedType sourceType = typeInspector.GetType(typeof(List <string>));
IPagingProvider pagingProvider = new QueryableCursorPagingProvider();
IPagingHandler pagingHandler = pagingProvider.CreateHandler(sourceType, default);
var list = new List <string> {
"f", "g"
};
var pagingDetails = new CursorPagingArguments(last: 1);
var context = new MockContext(pagingDetails);
// act
var connection = (Connection)await pagingHandler.SliceAsync(context, list);
// assert
Assert.Collection(connection.Edges,
t =>
{
Assert.Equal("g", t.Node);
Assert.Equal(1, GetPositionFromCursor(t.Cursor));
});
Assert.True(
connection.Info.HasPreviousPage,
"HasPreviousPage");
Assert.False(
connection.Info.HasNextPage,
"HasNextPage");
}
public async Task HasPrevious_True()
{
// arrange
var typeInspector = new DefaultTypeInspector();
IExtendedType sourceType = typeInspector.GetType(typeof(List <string>));
IPagingProvider pagingProvider = new QueryableCursorPagingProvider();
IPagingHandler pagingHandler = pagingProvider.CreateHandler(sourceType, default);
var list = new List <string> {
"a", "b", "c", "d", "e", "f", "g"
};
var pagingDetails = new CursorPagingArguments(first: 1);
var context = new MockContext(pagingDetails);
var connection = (Connection)await pagingHandler.SliceAsync(context, list);
pagingDetails = new CursorPagingArguments(after: connection.Info.EndCursor, first: 2);
context = new MockContext(pagingDetails);
// act
connection = (Connection)await pagingHandler.SliceAsync(context, list);
// assert
Assert.True(connection.Info.HasPreviousPage);
}