public void When_The_Start_Is_Greater_Than_The_End()
{
var instance = new ModuloThreeAndFiveSubstitutionSequenceCalculator();
var result = instance.Evaluate(11, 10);
result.ToArray();
Assert.Fail("Should have exceptioned...");
}
public void When_A_Larger_Range_Is_Selected_Multiples_Of_Both_Three_And_Five_Are_Subsituted()
{
var instance = new ModuloThreeAndFiveSubstitutionSequenceCalculator();
var result = instance.Evaluate(0, 31);
Assert.IsNotNull(result);
Assert.IsTrue(result.Any());
Assert.AreEqual("0", result.First());
Assert.AreEqual("31", result.Last());
Assert.AreEqual(32, result.Count());
Assert.AreEqual(2, result.Count(r => r == "Z"));
Assert.AreEqual("Z", result.Skip(15).First());
Assert.AreEqual("Z", result.Skip(30).First());
}
public void When_A_Simple_Small_Range_Is_Selected_Both_Threes_And_Fives_Are_Subsituted()
{
var instance = new ModuloThreeAndFiveSubstitutionSequenceCalculator();
var result = instance.Evaluate(0, 11);
Assert.IsNotNull(result);
Assert.IsTrue(result.Any());
Assert.AreEqual("0", result.First());
Assert.AreEqual("11", result.Last());
Assert.AreEqual(12, result.Count());
Assert.AreEqual(3, result.Count(r => r == "C")); // Number of values divisible by 3
Assert.AreEqual(2, result.Count(r => r == "E")); // Number of values divisible by 5
Assert.AreEqual("0 1 2 C 4 E C 7 8 C E 11", String.Join(" ", result.ToArray()));
}