From 98c83ae9721d0018988518b531c4dd18af715483 Mon Sep 17 00:00:00 2001
From: Leonetienne <leonetienne@hotmail.de>
Date: Sat, 4 Dec 2021 20:36:24 +0100
Subject: added umlaut support for Lower/Upper for îíì
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---
 StringTools/Test/Upper.cpp | 30 ++++++++++++++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)

(limited to 'StringTools/Test/Upper.cpp')

diff --git a/StringTools/Test/Upper.cpp b/StringTools/Test/Upper.cpp
index cbefee7..1e7684b 100644
--- a/StringTools/Test/Upper.cpp
+++ b/StringTools/Test/Upper.cpp
@@ -183,17 +183,43 @@ namespace _StringTools
 			Assert::AreEqual("ÖÓÒÔ", out.c_str());
 		}
 
+		// Tests that lowering already lowered umlautes returns itself
+		TEST_METHOD(Umlautes_already_upper_i)
+		{
+			// Setup
+			const std::string in = "ÍÌÎ";
+
+			// Exercise
+			const std::string out = StringTools::Upper(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::Upper(in);
+
+			// Verify
+			Assert::AreEqual("ÍÌÎ", out.c_str());
+		}
+
 		// Tests that uppering 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 Seriöûs?! DÒN'T DÔ THÄT!!!";
+			const std::string in = "Ügh, Àrä Yóü Serîöûs?! DÒN'T DÔ THÄT!!!";
 
 			// Exercise
 			const std::string out = StringTools::Upper(in);
 
 			// Verify
-			Assert::AreEqual("ÜGH, ÀRÄ YÓÜ SERIÖÛS?! DÒN'T DÔ THÄT!!!", out.c_str());
+			Assert::AreEqual("ÜGH, ÀRÄ YÓÜ SERÎÖÛS?! DÒN'T DÔ THÄT!!!", out.c_str());
 			return;
 		}
 	};
-- 
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