diff --git a/src/sender/verifier.rs b/src/sender/verifier.rs
index 7e9c041..afecf56 100644
--- a/src/sender/verifier.rs
+++ b/src/sender/verifier.rs
@@ -78,3 +78,22 @@ impl<T: CertificateStore> Verifier<T> {
         store.into()
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use std::collections::HashMap;
+
+    use super::*;
+
+    const CERT: &[u8] = include_bytes!("../../test/certificates/gemini.example.org/cert.der");
+
+    #[test]
+    fn tofu() {
+        let verifier: Verifier<HashMap<String, String>> = HashMap::new().into();
+        let cert = rustls::Certificate(CERT.into());
+        let name = rustls::ServerName::try_from("gemini.example.org").unwrap();
+        let now = time::SystemTime::now();
+        let mut scts: Vec<&[u8]> = vec![];
+        let res = verifier.verify_server_cert(&cert, &[], &name, &mut scts.iter(), &[], now);
+    }
+}
diff --git a/test/certificates/gemini.example.org/cert.der b/test/certificates/gemini.example.org/cert.der
new file mode 100644
index 0000000..78ee071
Binary files /dev/null and b/test/certificates/gemini.example.org/cert.der differ
diff --git a/test/certificates/gemini.example.org/key.der b/test/certificates/gemini.example.org/key.der
new file mode 100644
index 0000000..6903ea5
Binary files /dev/null and b/test/certificates/gemini.example.org/key.der differ