public void When_passing_null_text_calling_GetWordFrequencies_returns_0_entries()
{
WordFrequencyAnalyzer analyzer = new WordFrequencyAnalyzer();
var result = analyzer.GetWordFrequencies(null);
Assert.AreEqual(0, result.Count());
}
public void When_passing_complex_text_of_6_distinct_words_calling_GetWordFrequencies_returns_6_entries()
{
WordFrequencyAnalyzer analyzer = new WordFrequencyAnalyzer();
var result = analyzer.GetWordFrequencies("There's no place like home. Home sweet like home").ToList();
Assert.AreEqual(6, result.Count());
Assert.AreEqual("there's", result[0].Word);
Assert.AreEqual(1, result[0].Frequency);
Assert.AreEqual("no", result[1].Word);
Assert.AreEqual(1, result[1].Frequency);
Assert.AreEqual("place", result[2].Word);
Assert.AreEqual(1, result[2].Frequency);
Assert.AreEqual("like", result[3].Word);
Assert.AreEqual(2, result[3].Frequency);
Assert.AreEqual("home", result[4].Word);
Assert.AreEqual(3, result[4].Frequency);
Assert.AreEqual("sweet", result[5].Word);
Assert.AreEqual(1, result[5].Frequency);
}