From d010caa94a94d11b8dd2ec88e0887446fd26b95e Mon Sep 17 00:00:00 2001
From: Leonetienne <leonetienne@hotmail.de>
Date: Sat, 4 Dec 2021 20:18:09 +0100
Subject: Added method Lower()

---
 StringTools/Test/Lower.cpp            | 200 ++++++++++++++++++++++++++++++++++
 StringTools/Test/Test.vcxproj         |   1 +
 StringTools/Test/Test.vcxproj.filters |   3 +
 3 files changed, 204 insertions(+)
 create mode 100644 StringTools/Test/Lower.cpp

(limited to 'StringTools/Test')

diff --git a/StringTools/Test/Lower.cpp b/StringTools/Test/Lower.cpp
new file mode 100644
index 0000000..c45af68
--- /dev/null
+++ b/StringTools/Test/Lower.cpp
@@ -0,0 +1,200 @@
+#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 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?! DÓN'T DÒ THÄT!!!";
+
+			// Exercise
+			const std::string out = StringTools::Lower(in);
+
+			// Verify
+			Assert::AreEqual("ügh, àrä yóü seriöûs?! dón't dò thät!!!", out.c_str());
+			return;
+		}
+	};
+}
diff --git a/StringTools/Test/Test.vcxproj b/StringTools/Test/Test.vcxproj
index 51fba2c..59e804a 100644
--- a/StringTools/Test/Test.vcxproj
+++ b/StringTools/Test/Test.vcxproj
@@ -162,6 +162,7 @@
     </ProjectReference>
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="Lower.cpp" />
     <ClCompile Include="Replace_Char.cpp" />
     <ClCompile Include="Replace_String.cpp" />
   </ItemGroup>
diff --git a/StringTools/Test/Test.vcxproj.filters b/StringTools/Test/Test.vcxproj.filters
index e159865..c10488e 100644
--- a/StringTools/Test/Test.vcxproj.filters
+++ b/StringTools/Test/Test.vcxproj.filters
@@ -21,5 +21,8 @@
     <ClCompile Include="Replace_String.cpp">
       <Filter>Quelldateien</Filter>
     </ClCompile>
+    <ClCompile Include="Lower.cpp">
+      <Filter>Quelldateien</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>
\ No newline at end of file
-- 
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