public void CalculateMostFrequentNWords_Given_N_is_Three_Should_Return_Description()
{
/*
* DESCRIPTION
* If several words have the same frequency, this method should return them in ascendant alphabetical order
* (for input text “The sun shines over the lake” and n = 3, it should return
* the list { (“the”, 2), (“lake”, 1), (“over”, 1) }
*/
//arrange
string text = "The sun shines over the lake";
int n = 3;
var wordFrequencyAnalyser = new WordFrequencyAnalyzer(textPrepareForFrpcessingFunction);
//act
var listOfWordFrequencies = wordFrequencyAnalyser.CalculateMostFrequentNWords(text, n);
// Assert
Assert.AreEqual("the", listOfWordFrequencies[0].Word);
Assert.AreEqual(2, listOfWordFrequencies[0].Frequency);
Assert.AreEqual("lake", listOfWordFrequencies[1].Word);
Assert.AreEqual(1, listOfWordFrequencies[1].Frequency);
Assert.AreEqual("over", listOfWordFrequencies[2].Word);
Assert.AreEqual(1, listOfWordFrequencies[2].Frequency);
}
static void Main(string[] args)
{
WordFrequencyAnalyzer Workf = new WordFrequencyAnalyzer();
string s1;
Console.Write("Enter a sentence: ");
s1 = Console.ReadLine();
Workf.CalculateHighestFrequency(s1);
Console.WriteLine();
Console.ReadLine();
Console.Write("Choose your word: ");
Console.WriteLine(Workf.CalculateFrequencyForWord(s1, Console.ReadLine()));
Console.Write("Choose n: ");
string s3 = Console.ReadLine();
var items = Workf.CalculateMostFrequentNWords(s1, Convert.ToInt32(s3));
foreach (var item in items)
{
Console.WriteLine(item);
}
}
public void CalculateHighestFrequency_Given_Regular_Text_Should_Return()
{
//arrange
string text = "The lake in the lake was the lake's best the thing";
var wordFrequencyAnalyser = new WordFrequencyAnalyzer(textPrepareForFrpcessingFunction);
//act
int frequency = wordFrequencyAnalyser.CalculateHighestFrequency(text);
// Assert
Assert.AreEqual(4, frequency);
}
public void CalculateHighestFrequency_Given_EmptyString_Text_Should_Return_Zero()
{
//arrange
string text = string.Empty;
var wordFrequencyAnalyser = new WordFrequencyAnalyzer(textPrepareForFrpcessingFunction);
//act
int frequency = wordFrequencyAnalyser.CalculateHighestFrequency(text);
// Assert
Assert.AreEqual(0, frequency);
}
public void CalculateHighestFrequency_Given_Null_Text_Should_Throw()
{
//arrange
string text = null;
var wordFrequencyAnalyser = new WordFrequencyAnalyzer(textPrepareForFrpcessingFunction);
//act
wordFrequencyAnalyser.CalculateHighestFrequency(text);
// Assert
Assert.Fail("Expected exception was not thrown.");
}
public void CalculateFrequencyForWord_Given_Regular_Text_And_Search_Empty_String_Frequency()
{
//arrange
string text = "The lake in the lake was the lake best the thing";
string word = String.Empty;
var wordFrequencyAnalyser = new WordFrequencyAnalyzer(textPrepareForFrpcessingFunction);
//act
var frequency = wordFrequencyAnalyser.CalculateFrequencyForWord(text, word);
// Assert
Assert.AreEqual(0, frequency);
}
public void CalculateFrequencyForWord_Given_Regular_Text_Should_Return_Zero()
{
//arrange
string text = "The lake in the lake was the lake best the thing";
string word = "lake";
var wordFrequencyAnalyser = new WordFrequencyAnalyzer(textPrepareForFrpcessingFunction);
//act
var frequency = wordFrequencyAnalyser.CalculateFrequencyForWord(text, word);
// Assert
Assert.AreEqual(3, frequency);
}
public void CalculateFrequencyForWord_Given_Null_Text_and_Null_Word_Should_Throw()
{
//arrange
string text = null;
string word = null;
var wordFrequencyAnalyser = new WordFrequencyAnalyzer(textPrepareForFrpcessingFunction);
//act
var _ = wordFrequencyAnalyser.CalculateFrequencyForWord(text, word);
// Assert
Assert.Fail("Expected exception was not thrown.");
}
public void CalculateMostFrequentNWords_Given_EmptyText_and_Positive_N__Should_Return_EmptySet()
{
//arrange
string text = string.Empty;
int n = 5;
var wordFrequencyAnalyser = new WordFrequencyAnalyzer(textPrepareForFrpcessingFunction);
//act
var listOfWordFrequencies = wordFrequencyAnalyser.CalculateMostFrequentNWords(text, n);
// Assert
Assert.AreEqual(0, listOfWordFrequencies.Count);
}
public void CalculateMostFrequentNWords_Given_N_is_Zero_Should_Return_EmptySet()
{
//arrange
string text = "The sun shines over the lake";
int n = 0;
var wordFrequencyAnalyser = new WordFrequencyAnalyzer(textPrepareForFrpcessingFunction);
//act
var listOfWordFrequencies = wordFrequencyAnalyser.CalculateMostFrequentNWords(text, n);
// Assert
Assert.AreEqual(0, listOfWordFrequencies.Count);
}
static void Main(string[] args)
{
const string exampleText = @"The pipo sun sun sun sun sunsun sun shines over the lake zeta ypsolon xavi wawa vuut tipo sien rara quentin pipo open";
Func <string, List <string> > textSeperateFunction = (text) => text.ToLower().Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).ToList();
var wordprocessor = new WordFrequencyAnalyzer(textSeperateFunction);
Console.WriteLine($"{wordprocessor.CalculateHighestFrequency(exampleText)}");
Console.WriteLine($"{wordprocessor.CalculateFrequencyForWord(exampleText, "lake")}");
var mostFrequent = wordprocessor.CalculateMostFrequentNWords(exampleText, 7);
mostFrequent.ToList().ForEach(word => Console.WriteLine($"{word.Word}, freq: {word.Frequency}"));
}
public void init()
{
wordFrequencyAnalyzer = new WordFrequencyAnalyzer();
}
