public void OutputShouldContainALineForEveryEntryBetween1AndTheUpperBound([Values(1, 10, 100, 1000, 42789)] int upperBound)
{
var writer = new FakeTextWriter();
var engine = new FizzBuzzEngine(writer);
engine.Run(upperBound);
Assert.AreEqual(upperBound, writer.Results.Length);
}
public void WhenMultipleRulesMatchBothValuesShouldBeOutput()
{
var writer = new FakeTextWriter();
var engine = new FizzBuzzEngine(writer, Rules.FizzRule, Rules.BuzzRule);
engine.Run(15);
Assert.AreEqual(15, writer.Results.Length);
Assert.AreEqual(writer.Results.Last(), "FizzBuzz");
}
public void WhenNoRulesAreSpecifiedTheResultsShouldBeAListOfNumbers()
{
var writer = new FakeTextWriter();
var engine = new FizzBuzzEngine(writer);
engine.Run(15);
Assert.AreEqual(15, writer.Results.Length);
CollectionAssert.AreEquivalent(new [] { "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15" },
writer.Results);
}
public void NumbersDivisibleBy3ShouldOutputFizz()
{
var writer = new FakeTextWriter();
var engine = new FizzBuzzEngine(writer, Rules.FizzRule);
engine.Run(15);
Assert.AreEqual("Fizz", writer.Results[2]);
Assert.AreEqual("Fizz", writer.Results[5]);
Assert.AreEqual("Fizz", writer.Results[8]);
Assert.AreEqual("Fizz", writer.Results[11]);
Assert.AreEqual("Fizz", writer.Results[14]);
}
