軟體工程 Kata: FizzBuzzWhizz

FBTest.cs

using NUnit.Framework;
using System;

namespace FizzBuzz {
	[TestFixture]
	public class FBTest {
		[Test]
		public void NormalNumber() {
			Assert.That(MainClass.Decide(1), Is.EqualTo("1"));
			Assert.That(MainClass.Decide(2), Is.EqualTo("2"));
			Assert.That(MainClass.Decide(4), Is.EqualTo("4"));
		}

		[Test]
		public void DivThree() {
			Assert.That(MainClass.Decide(3), Is.EqualTo("Fizz"));
			Assert.That(MainClass.Decide(6), Is.EqualTo("Fizz"));
			Assert.That(MainClass.Decide(9), Is.EqualTo("Fizz"));
		}

		[Test]
		public void DivFive() {
			Assert.That(MainClass.Decide(5), Is.EqualTo("Buzz"));
			Assert.That(MainClass.Decide(10), Is.EqualTo("Buzz"));
			Assert.That(MainClass.Decide(20), Is.EqualTo("Buzz"));
		}

		[Test]
		public void DivThreeAndDivFive() {
			Assert.That(MainClass.Decide(15), Is.EqualTo("FizzBuzz"));
			Assert.That(MainClass.Decide(30), Is.EqualTo("FizzBuzz"));
			Assert.That(MainClass.Decide(45), Is.EqualTo("FizzBuzz"));
		}

		/* ==== First Requirement Changing ==== */

		[Test]
		public void CharThree() {
			Assert.That(MainClass.Decide(13), Is.EqualTo("Fizz"));
			Assert.That(MainClass.Decide(23), Is.EqualTo("Fizz"));
			Assert.That(MainClass.Decide(33), Is.EqualTo("Fizz"));
		}

		[Test]
		public void CharFive() {
			Assert.That(MainClass.Decide(25), Is.EqualTo("Buzz"));
			Assert.That(MainClass.Decide(55), Is.EqualTo("Buzz"));
			Assert.That(MainClass.Decide(65), Is.EqualTo("Buzz"));
		}

		[Test]
		public void CharThreeAndCharFive() {
			// 35 has been move to [ThreeAndFiveAndSeven]
			// Assert.That(MainClass.Decide(35), Is.EqualTo("FizzBuzz"));
			Assert.That(MainClass.Decide(53), Is.EqualTo("FizzBuzz"));
		}

		[Test]
		public void DivThreeAndCharFive() {
			Assert.That(MainClass.Decide(54), Is.EqualTo("FizzBuzz"));
			// 75 has been move to [ThreeAndFiveAndSeven]
			// Assert.That(MainClass.Decide(75), Is.EqualTo("FizzBuzz"));
		}

		// The only one DivFiveAndCharThree has been TEST befor.
		// [30 in DivThreeAndDivFive]

		/* ==== Second Requirement Changing ==== */

		[Test]
		public void DivSeven() {
			Assert.That(MainClass.Decide(7), Is.EqualTo("Whizz"));
			Assert.That(MainClass.Decide(14), Is.EqualTo("Whizz"));
		}

		[Test]
		public void CharSeven() {
			Assert.That(MainClass.Decide(17), Is.EqualTo("Whizz"));
			Assert.That(MainClass.Decide(47), Is.EqualTo("Whizz"));
		}

		[Test]
		public void CharSevenAndDivThree() {
			Assert.That(MainClass.Decide(27), Is.EqualTo("FizzWhizz"));
			Assert.That(MainClass.Decide(87), Is.EqualTo("FizzWhizz"));
		}

		[Test]
		public void DivSevenAndCharThree() {
			Assert.That(MainClass.Decide(63), Is.EqualTo("FizzWhizz"));
		}

		[Test]
		public void CharSevenAndDivFive() {
			Assert.That(MainClass.Decide(70), Is.EqualTo("BuzzWhizz"));
		}

		// The only one DivSevenAndCharFive has been TEST befor.
		// [70 in CharSevenAndDivFive]

		[Test]
		public void ThreeAndFiveAndSeven() {
			Assert.That(MainClass.Decide(35), Is.EqualTo("FizzBuzzWhizz"));
			Assert.That(MainClass.Decide(75), Is.EqualTo("FizzBuzzWhizz"));
		}

		/* ==== Error Handling ==== */

		[Test]
		public void ErrorHandling() {
			Assert.That(MainClass.Decide(0), Is.EqualTo("Input number should between 1 and 100."));
			Assert.That(MainClass.Decide(101), Is.EqualTo("Input number should between 1 and 100."));
		}
	}
}