public void ReadsTillTheEnd()
{
var reader = new MockCharacterReader(@"a .-
_/");
var character = reader.GetNextChar();
Assert.AreEqual('a', character);
character = reader.GetNextChar();
Assert.AreEqual(' ', character);
character = reader.GetNextChar();
Assert.AreEqual('.', character);
character = reader.GetNextChar();
Assert.AreEqual('-', character);
character = reader.GetNextChar();
Assert.AreEqual('\r', character);
character = reader.GetNextChar();
Assert.AreEqual('\n', character);
character = reader.GetNextChar();
Assert.AreEqual('_', character);
character = reader.GetNextChar();
Assert.AreEqual('/', character);
Assert.ThrowsException <System.IO.EndOfStreamException>(() => reader.GetNextChar());
}
public void TestUniqueItems()
{
var reader = new MockCharacterReader("a b b c c c d d d d e e e e");
var analizer = new WordFrequencyAnalizer(reader);
var output = analizer.Analize();
CollectionAssert.AllItemsAreUnique(output, "All words in collection are not unique");
}
public void TestConsumeWordMethod_Basic()
{
var reader = new MockCharacterReader("a");
var analizer = new WordFrequencyAnalizer(reader);
var word = analizer.ConsumeWord();
Assert.AreEqual("a", word, $"Consumed word not equal to the expected one. Expected a, Got: {word}");
}
public void TestSorting()
{
var reader = new MockCharacterReader("a b b c c c d d d d e e e e");
var analizer = new WordFrequencyAnalizer(reader);
var output = analizer.Analize();
var expected = new List <WordFrequency> {
new WordFrequency("d", 4),
new WordFrequency("e", 4),
new WordFrequency("c", 3),
new WordFrequency("b", 2),
new WordFrequency("a", 1),
};
CollectionAssert.AreEqual(expected, output, "Sorting does not satisfy requirements");
}
public void TestConsumeWordMethod_GarbageOnEndOfWord()
{
// single character
var reader = new MockCharacterReader("a.");
var analizer = new WordFrequencyAnalizer(reader);
var word = analizer.ConsumeWord();
Assert.AreEqual("a", word, $"Consumed word not equal to the expected one. Expected: a, Got: {word}");
// multiple characters
reader = new MockCharacterReader("a. --");
analizer = new WordFrequencyAnalizer(reader);
word = analizer.ConsumeWord();
Assert.AreEqual("a", word, $"Consumed word not equal to the expected one. Expected: a, Got: {word}");
}
public void TestStringFromPdf()
{
var reader = new MockCharacterReader("It was the best of times, it was the worst of times");
var analizer = new WordFrequencyAnalizer(reader);
var output = analizer.Analize();
var expected = new List <WordFrequency> {
new WordFrequency("it", 2),
new WordFrequency("of", 2),
new WordFrequency("the", 2),
new WordFrequency("times", 2),
new WordFrequency("was", 2),
new WordFrequency("best", 1),
new WordFrequency("worst", 1),
};
CollectionAssert.AreEqual(expected, output, "Sorting does not satisfy requirements");
}
public void TestConsumeWordMethod()
{
var reader = new MockCharacterReader(@"a ,-'#/471b /*-51''b47
9161!# $%&/()=4486
5161");
var analizer = new WordFrequencyAnalizer(reader);
var word = analizer.ConsumeWord();
Assert.AreEqual("a", word, $"Consumed word not equal to the expected one. Expected: a, Got: {word}");
word = analizer.ConsumeWord();
Assert.AreEqual("b", word, $"Consumed word not equal to the expected one. Expected: b, Got: {word}");
word = analizer.ConsumeWord();
Assert.AreEqual("b", word, $"Consumed word not equal to the expected one. Expected: b, Got: {word}");
word = analizer.ConsumeWord();
Assert.AreEqual(string.Empty, word, $"Consumed word not equal to the expected one. Expected: null, Got: {word}");
word = analizer.ConsumeWord();
Assert.AreEqual(string.Empty, word, $"Consumed word not equal to the expected one. Expected: null, Got: {word}");
}
public void ThrowsExceptionOnEnd()
{
var reader = new MockCharacterReader(string.Empty);
Assert.ThrowsException <System.IO.EndOfStreamException>(() => reader.GetNextChar());
}