public void ContainsWordShouldReturnFalseIfNotContained()
{
var words = new List <string>()
{
"house", "car"
};
wordsReaderMock
.Setup(reader => reader.GetAllWords())
.Returns(words);
repo = new WordsRepository(wordsReaderMock.Object);
Assert.False(repo.ContainsWord("motorcycle"));
}