public void BreakIntoWordsAndPunctuation()
{
var history = GetLocalHistoryText();
var index = 0;
while (index < history.Length)
{
var punctuationLength = WordAndPunctuationHelper.PunctuationLength(history, index);
var punctuation = history.Substring(index, punctuationLength);
index += punctuationLength;
var wordLength = WordAndPunctuationHelper.WordLength(history, index);
var word = history.Substring(index, wordLength);
index += wordLength;
Debug.WriteLineIf(ShowWorkings, $"{punctuation} - {word}");
}
}
static void CheckWordsAndPunctuation(string text, params string[] parts)
{
Assert.IsTrue(parts.Length % 2 == 0, "Must have pairings of word and punctuation");
var textIndex = 0;
var partsIndex = 0;
while (textIndex < text.Length)
{
var wordLength = WordAndPunctuationHelper.WordLength(text, textIndex);
var unexpectedPunctuationLength = WordAndPunctuationHelper.PunctuationLength(text, textIndex);
Assert.IsTrue((wordLength == 0) || (unexpectedPunctuationLength == 0), "Must be a word or punctuation, but not both");
var word = text.Substring(textIndex, wordLength);
textIndex += wordLength;
var reverseWordLength = WordAndPunctuationHelper.ReverseWordLength(text, textIndex);
Assert.AreEqual(reverseWordLength, wordLength, "Forwards and backwards word length results should match");
var unexpectedWordLength = WordAndPunctuationHelper.WordLength(text, textIndex);
var punctuationLength = WordAndPunctuationHelper.PunctuationLength(text, textIndex);
Assert.IsTrue(unexpectedWordLength == 0, "Cannot see a word after a preceeding word without punctuation");
var punctuation = text.Substring(textIndex, punctuationLength);
textIndex += punctuationLength;
var reversePunctuationLength = WordAndPunctuationHelper.ReversePunctuationLength(text, textIndex);
Assert.AreEqual(punctuationLength, reversePunctuationLength, "Forwards and backwards puctuation results should match");
Assert.AreEqual(parts[partsIndex + 0], word, "Expected word");
Assert.AreEqual(parts[partsIndex + 1], punctuation, "Expected punctuation");
partsIndex += 2;
}
Assert.AreEqual(parts.Length, partsIndex, "Should consume all expected parts");
}