public async Task UpsertSingleQuoteData_ShouldUpsertSingleQuoteDataAndSaveIntoCache()
{
_stockDataRepository.Setup(s => s.UpsertSingleQuoteData(It.IsAny <UpsertSingleQuoteData>())).Returns(Task.FromResult(true));
var query = new SingleQuoteQuery(1);
var queryResult = new SingleQuoteQueryResult("MSFT", _singleQuoteData);
await _service.UpsertSingleQuoteData(query, queryResult);
_stockDataRepository.Verify(s => s.UpsertSingleQuoteData(It.Is <UpsertSingleQuoteData>(u => u.SymbolId == query.SymbolId)));
_cache.TryGet(query.SymbolId, out SingleQuoteQueryResult cachedResult);
Assert.Equal(queryResult, cachedResult);
}
/// <summary>
/// Gets the query result from the cache and then database if it doesn't exist.
/// </summary>
/// <returns>The <see cref="SingleQuoteQueryResult"/>. If no query result exists, null is returned.</returns>
public Task <StockQueryResult> GetCachedQueryResult(int symbolId)
{
if (_queryResultCache.TryGet(symbolId, out SingleQuoteQueryResult result))
{
return(Task.FromResult <StockQueryResult>(result));
}
return(Task.FromResult <StockQueryResult>(null));
}
/// <summary>
/// Gets the single quote stock data for a ticker.
/// Retrieves from the cache <see cref="SingleQuoteCache"/> if it exists,
/// otherwise it will fetch from the database.
///
/// If does not exist in the database it will return no data.
/// Returns empty
/// </summary>
/// <param name="ticker"></param>
/// <returns>The <see cref="StockSingleQuoteDataDTO"/></returns>
public async Task <StockSingleQuoteDataDTO> GetSingleQuoteData(int symbolId)
{
SingleQuoteQueryResult queryResult;
SingleQuoteData data;
if (_singleQuoteCache.TryGet(symbolId, out queryResult))
{
return(new StockSingleQuoteDataDTO(symbolId, queryResult.Data));
}
data = await _stockDataRepository.GetSingleQuoteData(symbolId);
if (data != null)
{
_singleQuoteCache.Add(symbolId, new SingleQuoteQueryResult(data.Ticker, data));
return(new StockSingleQuoteDataDTO(symbolId, data));
}
return(StockSingleQuoteDataDTO.CreateNoDataExists(symbolId));
}
