public async Task <List <SearchResult> > GetSearchResultsAsync(string query)
{
if (string.IsNullOrEmpty(query))
{
return(null);
}
bool googleSearchEnabled;
bool bingSearchEnabled;
try
{
googleSearchEnabled = bool.Parse(ConfigurationManager.AppSettings["GoogleSearchEnabled"]);
bingSearchEnabled = bool.Parse(ConfigurationManager.AppSettings["BingSearchEnabled"]);
}
catch (Exception)
{
return(null);
}
var searchTasks = new List <Task <List <SearchResult> > >();
var registerTask = new Action <bool, ISearcher>(
(flag, searcher) =>
{
if (flag && searcher != null)
{
searchTasks.Add(searcher.GetSearchResultsAsync(query));
}
});
ISearcher googleSearcher = _searcherFactory.CreateGoogleSearcher();
ISearcher bingSearcher = _searcherFactory.CreateBingSearcher();
registerTask(googleSearchEnabled, googleSearcher);
registerTask(bingSearchEnabled, bingSearcher);
Task <List <SearchResult> > firstExecutedTask;
try
{
firstExecutedTask = await Task.WhenAny(searchTasks);
}
catch (ArgumentException)
{
return(null);
}
List <SearchResult> searchResults = await firstExecutedTask;
if (searchResults?.Count() != 0)
{
_searchRepository.AddSearchResults(searchResults, query);
}
return(searchResults);
}
public void GetSearchResultsAsync_QueryIsValid_ReturnsListOfSearchResults()
{
//Arrange
var query = "Skateboard";
var fakeGoogleSearcher = A.Fake <GoogleSearcher>();
var fakeBingSearcher = A.Fake <BingSearcher>();
var listOfResults = new List <SearchResult>();
listOfResults.Add(new SearchResult
{
Id = 1111,
Link = "www.skateboard.com",
Title = "Best skateboards in the world"
});
A.CallTo(() => fakeGoogleSearcher.GetSearchResultsAsync(query))
.Returns(listOfResults);
A.CallTo(() => fakeBingSearcher.GetSearchResultsAsync(query))
.Returns(listOfResults);
int notExpectedResultCount = 0;
ConfigurationManager.AppSettings["GoogleSearchEnabled"] = "true";
ConfigurationManager.AppSettings["BingSearchEnabled"] = "true";
ConfigurationManager.AppSettings["BingApiUrl"] = "https://api.cognitive.microsoft.com/bing/v7.0/search";
A.CallTo(() => _searcherFactory.CreateGoogleSearcher())
.Returns(fakeGoogleSearcher);
A.CallTo(() => _searcherFactory.CreateBingSearcher())
.Returns(fakeBingSearcher);
//Act
List <SearchResult> result = _searchService.GetSearchResultsAsync(query).Result;
//Assert
Assert.IsInstanceOf <List <SearchResult> >(result);
Assert.AreNotEqual(result.Count, notExpectedResultCount);
}
