public void GivenString_GeneratePermutations_ReturnsListOfPermutations()
{
//Arrange
var str = "abc";
var expectedPermutations = new List <string>
{
"abc",
"acb",
"bac",
"bca",
"cba",
"cab"
};
var stringPermutation = new StringPermutationsV1();
//Act
var actualPermutations = stringPermutation.GeneratePermutations(str);
//Assert
Assert.AreEqual(expectedPermutations.Count, actualPermutations.Count);
for (var i = 0; i < expectedPermutations.Count; i++)
{
Assert.AreEqual(expectedPermutations[i], actualPermutations[i]);
}
}
public void GivenString_Generate_ReturnsPermutationsOfString()
{
//Arrange
var str = "abc";
var stringPermutations = new StringPermutationsV1();
var expectedPermutations = new HashSet <string>();
expectedPermutations.Add("abc");
expectedPermutations.Add("acb");
expectedPermutations.Add("bac");
expectedPermutations.Add("bca");
expectedPermutations.Add("cab");
expectedPermutations.Add("cba");
//Act
var actualPermutations = stringPermutations.Permutations(str);
//Assert
expectedPermutations.ExceptWith(actualPermutations);
Assert.AreEqual(0, expectedPermutations.Count);
}
