public void All_permutations_generated_when_all_elements_are_the_same()
{
// Arrange
var sut = new PermutationIterator <int>(new[] { 5, 5, 5 }, true);
// Act
var result = sut.ToList();
// Assert
result.Should()
.HaveCount(6).And
.AllBeEquivalentTo(new[] { 5, 5, 5 });
}
public void All_permutations_generated()
{
// Arrange
var sut = new PermutationIterator <int>(new[] { 1, 2, 3 }, true);
var expected = new List <int[]>
{
new[] { 1, 2, 3 },
new[] { 1, 3, 2 },
new[] { 2, 1, 3 },
new[] { 2, 3, 1 },
new[] { 3, 1, 2 },
new[] { 3, 2, 1 }
};
// Act
var result = sut.ToList();
// Assert
// This FluentAssertion is based on:
// https://stackoverflow.com/questions/68527627/fluent-assertions-equivalency-of-two-lists-of-arrays-with-arrays-needing-stric
result.Should().BeEquivalentTo(expected, options => options
.WithStrictOrderingFor(info => info.RuntimeType == typeof(int[])));
}
