diff --git a/autogen.sh b/autogen.sh
index bbad0ac..bbca3d9 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -19,7 +19,11 @@ EOF
 gen_src_body() {
   echo "GEN $OUT_SRC"
   (
-  for func in create run destroy; do
+    for n in $*; do
+      echo "extern uint32_t test_${n}_period_ms;"
+    done
+    echo ""
+  for func in create destroy; do
     echo "bool tests_${func}(void) {"
     echo "  uint32_t total=0, success=0;"
     for n in $*; do
@@ -39,6 +43,36 @@ EOF
 
 EOF
   done
+
+  cat << EOF
+bool tests_run(void) {
+  double now;
+  uint32_t total, success;
+EOF
+  for n in $*; do
+    echo "  static double next_${n}_run = 0;"
+  done
+  cat << EOF
+  for (;;) {
+    now = mg_time();
+EOF
+  for n in $*; do
+    cat << EOF
+    if (now > next_${n}_run) {
+      if (test_${n}_run()) success++;
+      next_${n}_run = now + (test_${n}_period_ms/1000.f);
+      total++;
+    }
+EOF
+  done
+
+  cat << EOF
+    mgos_usleep(1000);
+  }
+  return (total == success);
+}
+ 
+EOF
   ) >> $OUT_SRC
 }