public async Task DeleteAsync_Test()
{
//Arrange
var feedIterator = CreateFeedIteratorWithResponse(Enumerable.Empty <string>());
Container.GetItemQueryIterator <string>(Arg.Any <QueryDefinition>(), requestOptions: Arg.Any <QueryRequestOptions>())
.ReturnsForAnyArgs(feedIterator);
//Act
var result = await _sut.DeleteAsync(ApplicationId, _id).ConfigureAwait(false);
//Assert
result.Should().NotBeNull();
result.Should().BeOfType <OkResult>();
Container.Received(1)
.GetItemQueryIterator <string>(Arg.Any <QueryDefinition>(), requestOptions: Arg.Any <QueryRequestOptions>());
await Container.Received(1)
.DeleteItemAsync <Group>(Arg.Is(_id), Arg.Any <PartitionKey>())
.ConfigureAwait(false);
}