Add support for alternate TLs implementations.

src/test/range.rs

@@ -1,12 +1,11 @@
-#[cfg(feature = "tls")]
-use std::io::Read;
-
-#[cfg(feature = "tls")]
-use super::super::*;
-
 #[test]
 #[cfg(feature = "tls")]
-fn read_range() {
+fn read_range_rustls() {
+    use std::io::Read;
+
+    use super::super::*;
+
+    // rustls is used via crate level convenience calls
     let resp = get("https://ureq.s3.eu-central-1.amazonaws.com/sherlock.txt")
         .set("Range", "bytes=1000-1999")
         .call()
@@ -21,3 +20,30 @@ fn read_range() {
         [83, 99, 111, 116, 116, 34, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32]
     )
 }
+
+#[test]
+#[cfg(feature = "native-tls")]
+fn read_range_native_tls() {
+    use std::io::Read;
+    use std::sync::Arc;
+
+    use super::super::*;
+
+    let tls_config = native_tls::TlsConnector::new().unwrap();
+    let agent = builder().tls_connector(Arc::new(tls_config)).build();
+
+    let resp = agent
+        .get("https://ureq.s3.eu-central-1.amazonaws.com/sherlock.txt")
+        .set("Range", "bytes=1000-1999")
+        .call()
+        .unwrap();
+    assert_eq!(resp.status(), 206);
+    let mut reader = resp.into_reader();
+    let mut buf = vec![];
+    let len = reader.read_to_end(&mut buf).unwrap();
+    assert_eq!(len, 1000);
+    assert_eq!(
+        &buf[0..20],
+        [83, 99, 111, 116, 116, 34, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32]
+    )
+}