bin/test-examples: Handle testing of exercises with additional files

bin/test-examples

@@ -13,9 +13,20 @@ for exercise in *; do
     pushd $exercise
     mv "${exercise}.el" "${exercise}.el.bak"
     cp .meta/example.el "${exercise}.el"
+    files=()
+    pushd .meta
+    for file in example-*.el; do
+        if [[ -e "$file" ]]; then
+            mv "../${file#example-}" "../${file#example-}.bak"
+            cp "$file" "../${file#example-}"
+            files+=("${file#example-}")
+        fi
+    done
+    popd
     emacs -batch -l ert -l "${exercise}-test.el" -f ert-run-tests-batch-and-exit
     let "err_cnt += $?"
     mv "${exercise}.el.bak" "${exercise}.el"
+    for file in "${files[@]}"; do mv "${file}.bak" "${file}"; done;
     popd
 done
 popd > /dev/null