public async Task GivenASearchTermAndRedditConfigured_GetSentimentAsync_ReturnsResults()
{
// Arrange.
var logger = new Mock <ILogger <RedditSentimentAnalyzer.SentimentAnalyzer> >();
var sentimentAnalyzer = new Mock <IAzureSentimentAnalyzer>();
var redditSearch = new Mock <IRedditSearch>();
var analyzer = new FakeAzureSentimentAnalyzer(logger.Object, sentimentAnalyzer.Object, redditSearch.Object);
const string subreddit = "cryptocurrency";
const string searchTerm = "bitcoin";
var redditResults = new[]
{
new SearchResult
{
Title = "title",
Content = "content",
Permalink = "xyz"
},
new SearchResult
{
Title = "title2",
Content = "content2",
Permalink = "xyz2"
},
new SearchResult
{
Title = "title3",
Content = "content3",
Permalink = "xyz3"
}
};
redditSearch.Setup(x => x.SearchAsync(subreddit, searchTerm, 100))
.ReturnsAsync(redditResults);
var random = new Random();
var sentiments = redditResults.ToDictionary(key => $"{key.Title}. {key.Content}", value => random.NextDouble());
sentimentAnalyzer
.Setup(x => x.GetSentimentAsync(
It.Is <IEnumerable <string> >(
words => words.SequenceEqual(redditResults.Select(redditResult => $"{redditResult.Title}. {redditResult.Content}")))))
.ReturnsAsync(sentiments);
// Act.
var results = await analyzer.GetSentimentAsync(subreddit, searchTerm);
// Assert.
redditSearch.VerifyAll();
sentimentAnalyzer.VerifyAll();
results.ShouldNotBeNull();
results.Posts.ShouldNotBeNull();
results.Posts.ShouldNotBeEmpty();
foreach (var result in results.Posts)
{
result.Title.ShouldNotBeNullOrWhiteSpace();
result.Url.ShouldNotBeNullOrWhiteSpace();
}
}
public async Task GivenASearchTermAndRedditConfiguredButNoResults_GetSentimentAsync_ReturnsNull()
{
// Arrange.
var logger = new Mock <ILogger <RedditSentimentAnalyzer.SentimentAnalyzer> >();
var sentimentAnalyzer = new Mock <IAzureSentimentAnalyzer>();
var redditSearch = new Mock <IRedditSearch>();
var analyzer = new FakeAzureSentimentAnalyzer(logger.Object, sentimentAnalyzer.Object, redditSearch.Object);
const string subreddit = "cryptocurrency";
const string searchTerm = "bitcoin";
var redditResults = new[]
{
new SearchResult
{
Title = "title",
Content = "content",
Permalink = "xyz"
},
new SearchResult
{
Title = "title2",
Content = "content2",
Permalink = "xyz2"
},
new SearchResult
{
Title = "title3",
Content = "content3",
Permalink = "xyz3"
}
};
redditSearch.Setup(x => x.SearchAsync(subreddit, searchTerm, 100))
.ReturnsAsync(redditResults);
sentimentAnalyzer.Setup(x => x.GetSentimentAsync(It.IsAny <IEnumerable <string> >()))
.ReturnsAsync((Dictionary <string, double>)null);
// Act.
var results = await analyzer.GetSentimentAsync(subreddit, searchTerm);
// Assert.
redditSearch.VerifyAll();
sentimentAnalyzer.VerifyAll();
results.ShouldBeNull();
}
public async Task GivenASearchTermWithNothingConfigured_GetSentimentAsync_ReturnsEmptyResult()
{
// Arrange.
var logger = new Mock <ILogger <RedditSentimentAnalyzer.SentimentAnalyzer> >();
var sentimentAnalyzer = new Mock <IAzureSentimentAnalyzer>();
var redditSearch = new Mock <IRedditSearch>();
var analyzer = new FakeAzureSentimentAnalyzer(logger.Object, sentimentAnalyzer.Object, redditSearch.Object);
const string subreddit = "cryptocurrency";
const string searchTerm = "bitcoin";
// Act.
var results = await analyzer.GetSentimentAsync(subreddit, searchTerm);
// Assert.
sentimentAnalyzer.Verify(x => x.GetSentimentAsync(It.IsAny <IEnumerable <string> >()), Times.Never);
results.ShouldBeNull();
}
