public void SwapLetters_ReturnsTrue_ForInstructionItCanHandle()
{
var sut = new SwapLettersRule();
Assert.True(sut.CanScramble("swap letter d with letter a"));
Assert.False(sut.CanScramble("swap letter xx with letter yy"));
Assert.False(sut.CanScramble("swap letter 4 with letter 2"));
}
public void SwapLetters_ReturnsStringWithGivenLettersSwapped()
{
var expected = "edcba";
var sut = new SwapLettersRule();
var actual = sut.Scramble("ebcda", "swap letter d with letter b");
Assert.Equal(expected, actual);
}
public void Descramble_ReswapsLetters()
{
var expected = "edcba";
var sut = new SwapLettersRule();
var actual = sut.Descramble("ebcda", "swap letter d with letter b");
Assert.Equal(expected, actual);
}
