public static void CreateNext_ArrayWithWrongSize_ShouldThrowException(PyramidSection sut, Generator <int> generator, IFixture fixture)
{
var size = generator.First(number => number != sut.Step + 1);
var values = fixture.CreateMany <int>(size).ToArray();
Assert.Throws <ArgumentException>(() => sut.CreateNext(values));
}
/// <summary>
/// Generates linked pyramid sections and returns the bottom one.
/// </summary>
/// <returns></returns>
public IPyramidSection GeneratePyramidSections(string path)
{
if (path == null)
{
throw new ArgumentNullException(nameof(path));
}
if (!_fileHelper.FileExists(path))
{
throw new FileNotFoundException($"File does not exists at path {path}");
}
var file = _fileHelper.ReadAllText(path).TrimEnd().TrimStart();
var lines = SplitIntoLines(file);
var stack = lines.Select(l => SplitIntoNumbers(l));
var enumerator = stack.GetEnumerator();
enumerator.MoveNext();
var firstSection = enumerator.Current;
if (firstSection.Count() != 1)
{
throw new ArgumentException();
}
IPyramidSection currentSection = new PyramidSection(firstSection.First());
while (enumerator.MoveNext())
{
var section = enumerator.Current;
currentSection = currentSection.CreateNext(section.ToArray());
}
return(currentSection);
}
public static void Constructor_WithValue_ShouldCreatesArrayWithOneValue(int value)
{
var pyramidSection = new PyramidSection(value);
pyramidSection.Step.Should().Be(1);
pyramidSection.Values.Count.Should().Be(1);
pyramidSection.Values.ElementAt(0).Should().Be(value);
}
public static void CreateNext_ArrayWithCorrectSize_ShouldCreateNextSection(PyramidSection sut, IFixture fixture)
{
var size = sut.Step + 1;
var values = fixture.CreateMany <int>(size).ToArray();
var nextSection = sut.CreateNext(values);
nextSection.Step.Should().Be(size);
nextSection.Values.Count().Should().Be(size);
nextSection.Previous.Should().Be(sut);
}
public static void Totalize_ShouldTotalizeSections(PyramidTotalizer sut)
{
var topValue = 3;
var array1 = new[] { 7, 4 };
var array2 = new[] { 2, 4, 6 };
var array3 = new[] { 8, 5, 9, 3 };
var bottomSection = new PyramidSection(topValue)
.CreateNext(array1)
.CreateNext(array2)
.CreateNext(array3);
var value = sut.Totalize(bottomSection);
value.Should().Be(23);
}
