//C#/CSClasses/TestStringAlgorithms.cs
//Matthew Ellison
// Created: 07-04-21
//Modified: 10-11-21
//This class contains tests for my string algorithms library
/*
Copyright (C) 2021  Matthew Ellison

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public License
	along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/


using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Collections.Generic;


namespace TestStringAlgorithms{
	[TestClass]
	public class TestStringAlgorithms{
		[TestMethod]
		public void TestGetPermutations(){
			//Test 1
			string permString = "012";
			List<string> correctAnswer = new List<string>(){"012", "021", "102", "120", "201", "210"};
			List<string> answer = mee.StringAlgorithms.GetPermutations(permString);
			CollectionAssert.AreEqual(correctAnswer, answer, "GetPermutations failed");
		}
		[TestMethod]
		public void TestFindNumOccurrence(){
			//Test 1
			string testString = "abcdefgdd";
			char testChar = 'a';
			long correctAnswer = 1;
			long answer = mee.StringAlgorithms.FindNumOccurrence(testString, testChar);
			Assert.AreEqual(correctAnswer, answer, "FindNumOccurrence 1 failed");
			//Test 2
			testChar = 'd';
			correctAnswer = 3;
			answer = mee.StringAlgorithms.FindNumOccurrence(testString, testChar);
			Assert.AreEqual(correctAnswer, answer, "FindNumOccurrence 2 failed");
			//Test 3
			testChar = 'h';
			correctAnswer = 0;
			answer = mee.StringAlgorithms.FindNumOccurrence(testString, testChar);
			Assert.AreEqual(correctAnswer, answer, "FindNumOccurrence 3 failed");
		}
		[TestMethod]
		public void TestIsPalindrome(){
			//Test 1
			string str = "101";
			bool correctAnswer = true;
			bool answer = mee.StringAlgorithms.IsPalindrome(str);
			Assert.AreEqual(correctAnswer, answer, "IsPalindrome 1 failed");

			//Test 2
			str = "100";
			correctAnswer = false;
			answer = mee.StringAlgorithms.IsPalindrome(str);
			Assert.AreEqual(correctAnswer, answer, "IsPalindrome 2 failed");

			//Test 3
			str = "";
			correctAnswer = true;
			answer = mee.StringAlgorithms.IsPalindrome(str);
			Assert.AreEqual(correctAnswer, answer, "IsPalindrome 3 failed");
		}
		[TestMethod]
		public void TestIsPandigital(){
			//Test 1
			string num = "123456789";
			bool correctAnswer = true;
			bool answer = mee.StringAlgorithms.IsPandigital(num);
			Assert.AreEqual(correctAnswer, answer, "IsPandigital 1 failed");

			//Test 2
			num = "123";
			correctAnswer = true;
			answer = mee.StringAlgorithms.IsPandigital(num, '1', '3');
			Assert.AreEqual(correctAnswer, answer, "IsPandigital 2 failed");

			//Test 3
			num = "123";
			correctAnswer = false;
			answer = mee.StringAlgorithms.IsPandigital(num);
			Assert.AreEqual(correctAnswer, answer, "IsPandigital 3 failed");

			//Test 4
			num = "123";
			correctAnswer = false;
			answer = mee.StringAlgorithms.IsPandigital(num, '3', '1');
			Assert.AreEqual(correctAnswer, answer, "IsPandigital 4 failed");

			//Test 5
			num = "1";
			correctAnswer = true;
			answer = mee.StringAlgorithms.IsPandigital(num, '1', '1');
			Assert.AreEqual(correctAnswer, answer, "IsPandigitial 5 failed");

			//Test 6
			num = "112";
			correctAnswer = false;
			answer = mee.StringAlgorithms.IsPandigital(num, '1', '3');
			Assert.AreEqual(correctAnswer, answer, "IsPandigitial 6 failed");
		}
	}
}