public void FandR_Sentence()
{
FindAndReplace test = new FindAndReplace();
Assert.Equal("Hello dog", test.FandR("Hello cat", "cat", "dog"));
}
public void FandR_Partial()
{
FindAndReplace test = new FindAndReplace();
Console.WriteLine(test.FandR("I am walking my cat to the cathedral", "cat", "dog"));
Assert.Equal("I am walking my dog to the doghedral", test.FandR("I am walking my cat to the cathedral", "cat", "dog"));
}