test: improve test coverage

src/settings.rs

@@ -646,4 +646,76 @@ mod tests {
         assert!(debug_output.contains("smtp.example.com"));
         assert!(debug_output.contains("user@example.com"));
     }
+
+    #[test]
+    fn email_settings_try_sender_into_mailbox_success() {
+        let settings = EmailSettings {
+            host: "smtp.example.com".to_string(),
+            port: 587,
+            user: "user@example.com".to_string(),
+            from: "sender@example.com".to_string(),
+            password: "password".to_string(),
+            recipient: "recipient@example.com".to_string(),
+            starttls: Starttls::Always,
+            tls: false,
+        };
+
+        let result = settings.try_sender_into_mailbox();
+        assert!(result.is_ok());
+        let mailbox = result.unwrap();
+        assert_eq!(mailbox.email.to_string(), "sender@example.com");
+    }
+
+    #[test]
+    fn email_settings_try_sender_into_mailbox_invalid() {
+        let settings = EmailSettings {
+            host: "smtp.example.com".to_string(),
+            port: 587,
+            user: "user@example.com".to_string(),
+            from: "invalid-email".to_string(),
+            password: "password".to_string(),
+            recipient: "recipient@example.com".to_string(),
+            starttls: Starttls::Always,
+            tls: false,
+        };
+
+        let result = settings.try_sender_into_mailbox();
+        assert!(result.is_err());
+    }
+
+    #[test]
+    fn email_settings_try_recipient_into_mailbox_success() {
+        let settings = EmailSettings {
+            host: "smtp.example.com".to_string(),
+            port: 587,
+            user: "user@example.com".to_string(),
+            from: "sender@example.com".to_string(),
+            password: "password".to_string(),
+            recipient: "recipient@example.com".to_string(),
+            starttls: Starttls::Always,
+            tls: false,
+        };
+
+        let result = settings.try_recpient_into_mailbox();
+        assert!(result.is_ok());
+        let mailbox = result.unwrap();
+        assert_eq!(mailbox.email.to_string(), "recipient@example.com");
+    }
+
+    #[test]
+    fn email_settings_try_recipient_into_mailbox_invalid() {
+        let settings = EmailSettings {
+            host: "smtp.example.com".to_string(),
+            port: 587,
+            user: "user@example.com".to_string(),
+            from: "sender@example.com".to_string(),
+            password: "password".to_string(),
+            recipient: "invalid-email".to_string(),
+            starttls: Starttls::Always,
+            tls: false,
+        };
+
+        let result = settings.try_recpient_into_mailbox();
+        assert!(result.is_err());
+    }
 }