diff --git a/.idea/patched-porobot.iml b/.idea/patched-porobot.iml
index 9bffc62..20bba95 100644
--- a/.idea/patched-porobot.iml
+++ b/.idea/patched-porobot.iml
@@ -5,6 +5,9 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/card-data" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/benches" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/examples" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/tests" isTestSource="true" />
       <excludeFolder url="file://$MODULE_DIR$/target" />
     </content>
     <orderEntry type="inheritedJdk" />
diff --git a/benches/.gitkeep b/benches/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/examples/.gitkeep b/examples/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/tests/.gitkeep b/tests/.gitkeep
new file mode 100644
index 0000000..e69de29