added trivial fslibrary test

Author: nlitsme

tests/test-fslib.cpp

@@ -0,0 +1,14 @@
+#include "unittestframework.h"
+#include <cpputils/fslibrary.h>
+#include <cpputils/fslibrary.h>
+#include <cpputils/formatter.h>
+
+TEST_CASE("fileenum") {
+    int n = 0;
+    for (auto [p, e] : fileenumerator("."))
+    {
+        //print("p:%s\n\te:%s\n", p, e);
+        n++;
+    }
+    CHECK(n>0);
+}