public void WordsFromString_ValidStringLine_ReturnsCorrectWordList()
{
string line = "This is my test file which contains some text." +
"this checks if it's a word or a number(1234) or just punctuation('\"\\/!?-)." +
"Seventy-five is one word. don't is one." +
"\"Emmerich\", \"Emmerich's\", \"Emmerichs\" are different.";
List <string> expectedWords = new List <string>()
{
"This", "is", "my", "test", "file", "which", "contains", "some", "text",
"this", "checks", "if", "it's", "a", "word", "or", "a", "number", "or", "just", "punctuation",
"Seventy-five", "is", "one", "word", "don't", "is", "one",
"Emmerich", "Emmerich's", "Emmerichs", "are", "different"
};
List <string> actualWords = FileWordCounter.WordsFromString(line).ToList();
Assert.AreEqual(expectedWords, actualWords);
}
public void CountWords_InvalidFilePath_ThrowFileNotFoundException()
{
Assert.Throws <FileNotFoundException>(new TestDelegate(() => FileWordCounter.CountWords("", StringComparer.CurrentCultureIgnoreCase)));
}
public void CountWords_ValidFilePath_ReturnsCorrectWordCount()
{
Assert.AreEqual(_testFileWordCounts, FileWordCounter.CountWords(_testFilePath, StringComparer.CurrentCultureIgnoreCase));
}
public void WordsFromString_StringWithNoValidWords_ReturnsEmptyWordList()
{
Assert.AreEqual(new List <string>(), FileWordCounter.WordsFromString("123456 --- !'\\\"/?><"));
}
public void WordsFromString_EmptyString_ReturnsEmptyWordList()
{
Assert.AreEqual(new List <string>(), FileWordCounter.WordsFromString(string.Empty));
}
public void WordsFromString_Null_ThrowArgumentNullException()
{
Assert.Throws <ArgumentNullException>(() => FileWordCounter.WordsFromString(null));
}
