test: add regression test for native-tls crate

Cargo.toml

@@ -4,4 +4,4 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-native-tls = "0.2"
+native-tls = { version = "0.2", features = ["vendored"] }

src/main.rs

@@ -1,3 +1,13 @@
+mod tls;
 fn main() {
     println!("Hello, world!");
+    tls::main();
+}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn passes() {
+        println!("passes okay");
+    }
 }

src/tls.rs

@@ -2,7 +2,7 @@ use native_tls::TlsConnector;
 use std::io::{Read, Write};
 use std::net::TcpStream;
 
-fn main() {
+pub fn main() {
     let connector = TlsConnector::new().unwrap();
 
     let stream = TcpStream::connect("google.com:443").unwrap();