Added tests for char tools

Test/Char__CopySign.cpp

@@ -0,0 +1,69 @@
+#include <CharTools.h>
+#include "Catch2.h"
+
+TEST_CASE(__FILE__"/JustChars", "[Char][CopySign]")
+{
+    // Setup
+    // Correct letters
+    const std::string in        = "tHEEuEUROPEanunioNCOnsiStsOFStATESIncLudingGERmanySWedenAndfRanCE";
+    // Correct signs
+    const std::string signs     = "AaaAAApqlkzicZnionceroigjreiojiopjaopickwapPjfipojWqfpohoijFucmwp";
+    // Correct signs and letters
+    const std::string expected  = "TheEUEuropeanUnionconsistsofstatesincludingGermanySwedenandFrance";
+
+    // Exercise
+    std::string out = in;
+    for (std::size_t i = 0; i < in.size(); i++)
+    {
+        const char cs = signs[i];
+        char& co = out[i];
+        co = CharTools::CopySign(cs, co);
+    }
+
+    // Verify:
+    REQUIRE(out == expected);
+}
+
+TEST_CASE(__FILE__"/WithSymbols", "[Char][CopySign]")
+{
+    // Setup
+    // Correct letters
+    const std::string in        = "ThE eu (euRoPeAN uNIon) cONsiSts Of 20 STAtes, iNCLUDInG GeRMAnY, sweden, aND fRancE.";
+    // Correct signs
+    const std::string signs     = "DwefOPerKofkaqdioJeriofgjqeiopqwqefijoqgehjloivxcvmopfkuoQpwfioqjiOqgjeprjgnvqPemrqij";
+    // Correct signs and letters
+    const std::string expected  = "The EU (European Union) consists of 20 states, including Germany, Sweden, and France.";
+
+    // Exercise
+    std::string out = in;
+    for (std::size_t i = 0; i < in.size(); i++)
+    {
+        const char cs = signs[i];
+        char& co = out[i];
+        co = CharTools::CopySign(cs, co);
+    }
+
+    // Verify:
+    REQUIRE(out == expected);
+}
+
+TEST_CASE(__FILE__"/DoesntChangeSignsIfSymbolSupplied", "[Char][CopySign]")
+{
+    // Setup
+    const std::string in        = "ThE eu (euRoPeAN uNIon) cONsiSts Of 20 STAtes, iNCLUDInG GeRMAnY, sweden, aND fRancE.";
+    const std::string signs     = "!§$)=%164)';:'*?)/!?/&()()?)*'_;:_,.93ß04750928372!!$==)()/!§$)=%)*'';:'*?)/!1572?/&(";
+    const std::string expected  = in;
+
+    // Exercise
+    std::string out = in;
+    for (std::size_t i = 0; i < in.size(); i++)
+    {
+        const char cs = signs[i];
+
+        char& co = out[i];
+        co = CharTools::CopySign(cs, co);
+    }
+
+    // Verify:
+    REQUIRE(out == expected);
+}