test: add regression test for native-tls crate

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

@@ -0,0 +1,15 @@
+use native_tls::TlsConnector;
+use std::io::{Read, Write};
+use std::net::TcpStream;
+
+pub fn main() {
+    let connector = TlsConnector::new().unwrap();
+
+    let stream = TcpStream::connect("google.com:443").unwrap();
+    let mut stream = connector.connect("google.com", stream).unwrap();
+
+    stream.write_all(b"GET / HTTP/1.0\r\n\r\n").unwrap();
+    let mut res = vec![];
+    stream.read_to_end(&mut res).unwrap();
+    println!("{}", String::from_utf8_lossy(&res));
+}