Red test.

tests/api/subscriptions.rs

@@ -1,4 +1,5 @@
 use crate::helpers::spawn_app;
+use reqwest::Url;
 use wiremock::matchers::{method, path};
 use wiremock::{Mock, ResponseTemplate};
 
@@ -90,6 +91,52 @@ async fn subscribe_sends_a_confirmation_email_with_a_link() {
     assert_eq!(html_link, text_link);
 }
 
+#[actix_rt::test]
+async fn the_link_returned_by_subscribe_sets_a_subscriber_as_confirmed() {
+    // Arrange
+    let app = spawn_app().await;
+    let body = "name=le%20guin&email=ursula_le_guin%40gmail.com";
+
+    Mock::given(path("/email"))
+        .and(method("POST"))
+        .respond_with(ResponseTemplate::new(200))
+        .mount(&app.email_server)
+        .await;
+
+    app.post_subscriptions(body.into()).await;
+    let email_request = &app.email_server.received_requests().await.unwrap()[0];
+    let body: serde_json::Value = serde_json::from_slice(&email_request.body).unwrap();
+
+    // Extract the link from one of the request fields.
+    let get_link = |s: &str| {
+        let links: Vec<_> = linkify::LinkFinder::new()
+            .links(s)
+            .filter(|l| *l.kind() == linkify::LinkKind::Url)
+            .collect();
+        assert_eq!(links.len(), 1);
+        links[0].as_str().to_owned()
+    };
+    let confirmation_link = Url::parse(&get_link(&body["HtmlBody"].as_str().unwrap())).unwrap();
+    // Let's make sure we don't call random APIs on the web
+    assert_eq!(confirmation_link.domain().unwrap(), "127.0.0.1");
+
+    // Act
+    let response = reqwest::get(confirmation_link)
+        .await
+        .unwrap()
+        .error_for_status()
+        .unwrap();
+    dbg!(&response);
+
+    // Assert
+    let saved = sqlx::query!(r#"SELECT status FROM subscriptions WHERE name = 'le guin' AND email = 'ursula_le_guin@gmail.com'"#,)
+        .fetch_one(&app.db_pool)
+        .await
+        .expect("Failed to fetch saved subscription.");
+
+    assert_eq!(saved.status, "confirmed");
+}
+
 #[actix_rt::test]
 async fn subscribe_returns_a_400_when_data_is_missing() {
     // Arrange