#include "CppUnitTest.h"
#include "../StringTools/StringTools.h"

using namespace Microsoft::VisualStudio::CppUnitTestFramework;

namespace _StringTools
{
	TEST_CLASS(_Lower)
	{
	public:

		// Tests that lowering an empty string returns an empty string
		TEST_METHOD(EmptyString)
		{
			// Setup
			const std::string in = "";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("", out.c_str());
			return;
		}

		// Tests that lowering a string without any letters returns an itself
		TEST_METHOD(Symbols)
		{
			// Setup
			const std::string in = "66! _-\n*";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("66! _-\n*", out.c_str());
			return;
		}

		// Tests that lowering a string of lowercase letters returns itself
		TEST_METHOD(AlreadyLowered)
		{
			// Setup
			const std::string in = "ughareyouserious";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("ughareyouserious", out.c_str());
			return;
		}

		// Tests that lowering a string of uppercase letters returns the lowercase version
		TEST_METHOD(Uppercase)
		{
			// Setup
			const std::string in = "UGHAREYOUSERIOUS";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("ughareyouserious", out.c_str());
			return;
		}

		// Tests that lowering a string of uppercase, lowercase letters and symbols returns the lowercase version
		TEST_METHOD(Mixed)
		{
			// Setup
			const std::string in = "Ugh, Are You Serious?! DON'T DO THAT!!!";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("ugh, are you serious?! don't do that!!!", out.c_str());
			return;
		}

		// Tests that lowering already lowered umlautes returns itself
		TEST_METHOD(Umlautes_already_lower_a)
		{
			// Setup
			const std::string in = "äáàâ";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("äáàâ", out.c_str());
		}

		// Tests that lowering uppercase umlautes returns the lowered umlautes
		TEST_METHOD(Umlautes_upper_a)
		{
			// Setup
			const std::string in = "ÄÁÀÂ";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("äáàâ", out.c_str());
		}

		// Tests that lowering already lowered umlautes returns itself
		TEST_METHOD(Umlautes_already_lower_e)
		{
			// Setup
			const std::string in = "éèê";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("éèê", out.c_str());
		}

		// Tests that lowering uppercase umlautes returns the lowered umlautes
		TEST_METHOD(Umlautes_upper_e)
		{
			// Setup
			const std::string in = "ÉÈÊ";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("éèê", out.c_str());
		}

		// Tests that lowering already lowered umlautes returns itself
		TEST_METHOD(Umlautes_already_lower_u)
		{
			// Setup
			const std::string in = "üúùû";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("üúùû", out.c_str());
		}

		// Tests that lowering uppercase umlautes returns the lowered umlautes
		TEST_METHOD(Umlautes_upper_u)
		{
			// Setup
			const std::string in = "ÜÚÙÛ";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("üúùû", out.c_str());
		}

		// Tests that lowering already lowered umlautes returns itself
		TEST_METHOD(Umlautes_already_lower_o)
		{
			// Setup
			const std::string in = "öóòô";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("öóòô", out.c_str());
		}

		// Tests that lowering uppercase umlautes returns the lowered umlautes
		TEST_METHOD(Umlautes_upper_o)
		{
			// Setup
			const std::string in = "ÖÓÒÔ";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("öóòô", out.c_str());
		}

		// Tests that lowering already lowered umlautes returns itself
		TEST_METHOD(Umlautes_already_lower_i)
		{
			// Setup
			const std::string in = "íìî";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("íìî", out.c_str());
		}

		// Tests that lowering uppercase umlautes returns the lowered umlautes
		TEST_METHOD(Umlautes_upper_i)
		{
			// Setup
			const std::string in = "ÍÌÎ";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("íìî", out.c_str());
		}

		// Tests that lowering a string of uppercase, lowercase letters and symbols returns the lowercase version, even with umlauts
		TEST_METHOD(Mixed_with_umlautes)
		{
			// Setup
			const std::string in = "Ügh, Àrä Yóü Serîöûs?! DÓN'T DÒ THÄT!!!";

			// Exercise
			const std::string out = StringTools::Lower(in);

			// Verify
			Assert::AreEqual("ügh, àrä yóü serîöûs?! dón't dò thät!!!", out.c_str());
			return;
		}
	};
}