Add integration testing on travis

.travis.yml

@@ -6,6 +6,8 @@ rust:
   - beta
   - nightly
 before_script:
+  - sudo apt-get update -qq
+  - sudo apt-get install -y postfix
   - pip install 'travis-cargo<0.2' --user && export PATH=$HOME/.local/bin:$PATH
 script:
   - |

tests/lib.rs

@@ -1,14 +1,71 @@
-// Copyright 2014 Alexis Mousset. See the COPYRIGHT
-// file at the top-level directory of this distribution.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
+extern crate lettre;
+
+use std::sync::{Arc, Mutex};
+use std::thread;
+
+use lettre::transport::smtp::SmtpTransportBuilder;
+use lettre::transport::EmailTransport;
+use lettre::mailer::Mailer;
+use lettre::email::EmailBuilder;
 
 #[test]
-
-fn foo() {
-    assert!(true);
+fn simple_sender() {
+    let sender = SmtpTransportBuilder::localhost().unwrap().build();
+    let mut mailer = Mailer::new(sender);
+    let email = EmailBuilder::new()
+                    .to("root@localhost")
+                    .from("user@localhost")
+                    .body("Hello World!")
+                    .subject("Hello")
+                    .build()
+                    .unwrap();
+    let result = mailer.send(email);
+    assert!(result.is_ok());
+}
+
+#[test]
+fn multithreaded_sender() {
+    let sender = SmtpTransportBuilder::localhost()
+                     .unwrap()
+                     .hello_name("localhost")
+                     .connection_reuse(true)
+                     .build();
+    let mailer = Arc::new(Mutex::new(Mailer::new(sender)));
+
+    let mut threads = Vec::new();
+    for _ in 1..5 {
+
+        let th_mailer = mailer.clone();
+        threads.push(thread::spawn(move || {
+
+            let email = EmailBuilder::new()
+                            .to("root@localhost")
+                            .from("user@localhost")
+                            .body("Hello World!")
+                            .subject("Hello")
+                            .build()
+                            .unwrap();
+
+            let result = th_mailer.lock().unwrap().send(email);
+            assert!(result.is_ok());
+        }));
+    }
+
+    for thread in threads {
+        let _ = thread.join();
+    }
+
+    let email = EmailBuilder::new()
+                    .to("root@localhost")
+                    .from("user@localhost")
+                    .body("Hello World!")
+                    .subject("Hello Bis")
+                    .build()
+                    .unwrap();
+
+    let mut mailer = mailer.lock().unwrap();
+    let final_result = mailer.send(email);
+    mailer.close();
+
+    assert!(final_result.is_ok());
 }