diff --git a/e.rs b/e.rs
index 7ca3efe..0f902b7 100644
--- a/e.rs
+++ b/e.rs
@@ -5,3 +5,15 @@ fn e() {
         print!("e");
     }
 }
+
+#[cfg(test)]
+mod tests {
+  use super::*;
+
+  #[test]
+  fn teeeeest() {
+    e();
+    unreachable!("eeeeeeeeee?????");
+  }
+}
+