generate new certs to fix tests on catalina

Author: sfackler

Cargo.toml

@@ -32,4 +32,5 @@ openssl-sys = "0.9.55"
 openssl-probe = "0.1"
 
 [dev-dependencies]
-hex = "0.4.2"
+tempfile = "3.0"
+test-cert-gen = "0.1"

src/lib.rs

@@ -101,9 +101,6 @@
 #[cfg(any(target_os = "macos", target_os = "ios"))]
 extern crate lazy_static;
 
-#[cfg(test)]
-extern crate hex;
-
 use std::any::Any;
 use std::error;
 use std::fmt;