Split test cases.

tests/api/subscriptions.rs

@@ -23,6 +23,25 @@ async fn subscribe_returns_a_200_for_valid_form_data() {
     assert_eq!(saved.name, "le guin");
 }
 
+#[actix_rt::test]
+async fn subscribe_persists_the_new_subscriber() {
+    // Arrange
+    let app = spawn_app().await;
+    let body = "name=le%20guin&email=ursula_le_guin%40gmail.com";
+
+    // Act
+    let response = app.post_subscriptions(body.into()).await;
+
+    // Assert
+    let saved = sqlx::query!("SELECT email, name FROM subscriptions",)
+        .fetch_one(&app.db_pool)
+        .await
+        .expect("Failed to fetch saved subscription.");
+
+    assert_eq!(saved.email, "ursula_le_guin@gmail.com");
+    assert_eq!(saved.name, "le guin");
+}
+
 #[actix_rt::test]
 async fn subscribe_sends_a_confirmation_email_for_valid_data() {
     // Arrange