Added in check for existing module

tdd.sh

@@ -14,9 +14,25 @@ clear_cmake_cache () {
     rm -rf CMakeCache.txt CMakeFiles/
 }
 
+does_moule_exist () {
+    local basename="$1"
+    
+    if [ -d "tests/$basename"] || [ -d "src/$basename" ]; then
+        return 1
+    else
+        return 0
+    fi
+}
+
 add_new_module () {
     read -p "Enter the name of the module:" modname
-    
+
+    if does_module_exist $modname; then
+        echo "Module already exists!"
+        echo "Exiting without changing anything"
+        exit
+    fi
+
     modname_cap=$(echo $modname | sed 's/[a-z]/\U&/g')
     modsrc_dir="./src/${modname}"
     modtest_dir="./tests/${modname}"
@@ -41,7 +57,6 @@ add_new_module () {
     
     # Now we add the new files to the git tracked files
 
-
     del_module
 }