public void Should_Throw_ArgumentNullException_With_Null_Argument()
{
// Arrange
string[] arrayOfWords = null;
var wordCounter = new WordCounter();
// Act
var results = wordCounter.CountWords(arrayOfWords);
// Assert
// should throw
}
static void Main(string[] args)
{
try
{
if (string.IsNullOrEmpty(_fileInputPath.Trim()))
{
throw new ConfigurationErrorsException("Please specify the path to the file input using the FileInputPath in the configuration file.");
}
if (!File.Exists(_fileInputPath))
{
throw new FileNotFoundException(string.Format("Could not find file at path '{0}'", _fileInputPath));
}
// StreamReader.ReadToEnd is possibly more efficient, but this is only a small text file
string fileText = File.ReadAllText(_fileInputPath);
// Split the words from the file into a new string array,
var wordSplitter = new WordSplitter();
string[] allWords = wordSplitter.SplitWordsAndSort(fileText);
// Get the counted words
var wordCounter = new WordCounter();
List<WordCountResult> countedWords = wordCounter.CountWords(allWords);
// show the report on screen
ShowWordCountReport(countedWords);
Console.WriteLine();
// Apply the step-two filter
// we only need the unique words and the count, so map them
// using a linq Select() projection
string[] uniqueWords = countedWords.Select(s => s.Word).ToArray();
// Get a string of words that match the filter
var wordFilter = new WordFilter();
string filteredWords = wordFilter.FilterWords(uniqueWords);
Console.WriteLine("Words matching the filter:");
Console.WriteLine(filteredWords);
}
catch (Exception ex)
{
LogErrorToConsole(ex.Message);
}
Console.Write("\nFinished. Press any key to quit...");
Console.Read();
}
public void Should_Count_Words()
{
// Arrange
var arrayOfWords = new[] { "hello", "goodbye", "hello", "goodbye", "hello" };
var wordCounter = new WordCounter();
var expectedHellos = 3;
var expectedGoodbyes = 2;
// Act
var results = wordCounter.CountWords(arrayOfWords);
// Assert
Assert.AreEqual(expectedHellos, results[0].Count);
Assert.AreEqual(expectedGoodbyes, results[1].Count);
}