Added a zstring test.

testing/zstring_test.cpp

@@ -60,4 +60,8 @@ int main(int argc, char **argv) {
    testc = testd;
    std::cout << testc << std::endl;
 
+   coreutils::ZString test5 = "this is a test of the Exclude tokenization without\n a line end.";
+   coreutils::ZString test6 = test5.getTokenExclude("\n");
+   std::cout << test6 << std::endl;
+   
 }