public async Task NextPage_WhenAlreadyCompleted_ThrowsExceptionAsync()
{
// arrange
A.CallTo(() => _isLastPage(_firstPage)).Returns(true);
var iterator = new TwitterPageIterator <ITwitterResult <long>, string>(null, _getNextPage, _extractNextCursor, _isLastPage);
// 1st iteration
await iterator.NextPageAsync();
// act - assert
await Assert.ThrowsAsync <TwitterIteratorAlreadyCompletedException>(async() => await iterator.NextPageAsync());
Assert.Equal("cursor_for_page_2", iterator.NextCursor);
Assert.True(iterator.Completed);
}
public async Task NextPageFromPage2_ShouldReturnSecondPageAsync()
{
// arrange
var iterator = new TwitterPageIterator <ITwitterResult <long>, string>("cursor_for_page_2", _getNextPage, _extractNextCursor, _isLastPage);
// act
var result = await iterator.NextPageAsync();
// assert
Assert.Equal("cursor_for_page_3", result.NextCursor);
Assert.Equal("cursor_for_page_3", iterator.NextCursor);
Assert.True(result.IsLastPage);
Assert.True(iterator.Completed);
Assert.Same(result.Content, _secondPage);
}
public async Task NextPage_ReturnsPageFromLambdaAsync()
{
// arrange
var iterator = new TwitterPageIterator <ITwitterResult <long>, string>(null, _getNextPage, _extractNextCursor, _isLastPage);
// act
var result = await iterator.NextPageAsync();
// assert
Assert.Equal("cursor_for_page_2", result.NextCursor);
Assert.Equal("cursor_for_page_2", iterator.NextCursor);
Assert.False(result.IsLastPage);
Assert.False(iterator.Completed);
Assert.Same(result.Content, _firstPage);
}
public ITwitterPageIterator <ITwitterResult <IIdsCursorQueryResultDTO> > GetFollowerIdsIterator(IGetFollowerIdsParameters parameters, ITwitterRequest request)
{
var twitterCursorResult = new TwitterPageIterator <ITwitterResult <IIdsCursorQueryResultDTO> >(
parameters.Cursor,
cursor =>
{
var cursoredParameters = new GetFollowerIdsParameters(parameters)
{
Cursor = cursor
};
return(_userQueryExecutor.GetFollowerIds(cursoredParameters, new TwitterRequest(request)));
},
page => page.DataTransferObject.NextCursorStr,
page => page.DataTransferObject.NextCursorStr == "0");
return(twitterCursorResult);
}
// Friend Ids
public ITwitterPageIterator <ITwitterResult <IIdsCursorQueryResultDTO> > GetFriendIdsIterator(IGetFriendIdsParameters parameters, ITwitterRequest request)
{
var twitterCursorResult = new TwitterPageIterator <ITwitterResult <IIdsCursorQueryResultDTO> >(
parameters.Cursor,
cursor =>
{
var cursoredParameters = new GetFriendIdsParameters(parameters)
{
Cursor = cursor
};
return(_userQueryExecutor.GetFriendIdsAsync(cursoredParameters, new TwitterRequest(request)));
},
page => page.Model.NextCursorStr,
page => page.Model.NextCursorStr == "0");
return(twitterCursorResult);
}
public ITwitterPageIterator <ITwitterResult <SearchTweetsV2Response>, string> GetSearchTweetsV2Iterator(ISearchTweetsV2Parameters parameters, ITwitterRequest request)
{
Func <string, Task <ITwitterResult <SearchTweetsV2Response> > > getNext = nextToken =>
{
var cursoredParameters = new SearchTweetsV2Parameters(parameters)
{
NextToken = nextToken
};
return(_searchQueryExecutor.SearchTweetsAsync(cursoredParameters, new TwitterRequest(request)));
};
var twitterCursorResult = new TwitterPageIterator <ITwitterResult <SearchTweetsV2Response>, string>(
parameters.NextToken,
getNext,
page =>
{
if (page.Model.Tweets.Length == 0)
{
return(null);
}
return(page.Model.SearchMetadata.NextToken);
},
page =>
{
if (page.Model.Tweets.Length == 0)
{
return(true);
}
return(page.Model.SearchMetadata.NextToken == null);
});
return(twitterCursorResult);
}
