Confirm subscription endpoint

tests/api/subscriptions_confirm.rs

@@ -0,0 +1,69 @@
+use crate::helpers::TestApp;
+use wiremock::{
+    Mock, ResponseTemplate,
+    matchers::{method, path},
+};
+
+#[tokio::test]
+async fn confirmation_links_without_token_are_rejected_with_a_400() {
+    let app = TestApp::spawn().await;
+
+    let response = reqwest::get(&format!("{}/subscriptions/confirm", &app.address))
+        .await
+        .unwrap();
+    assert_eq!(400, response.status().as_u16());
+}
+
+#[tokio::test]
+async fn the_link_returned_by_subscribe_returns_a_200_if_called() {
+    let app = TestApp::spawn().await;
+
+    let body = "name=Alphonse&email=alphonse.paix%40outlook.com";
+
+    Mock::given(path("v1/email"))
+        .and(method("POST"))
+        .respond_with(ResponseTemplate::new(200))
+        .expect(1)
+        .mount(&app.email_server)
+        .await;
+
+    app.post_subscriptions(body.into()).await;
+
+    let email_request = &app.email_server.received_requests().await.unwrap()[0];
+    let confirmation_links = app.get_confirmation_links(email_request);
+    let response = reqwest::get(confirmation_links.html).await.unwrap();
+    assert_eq!(response.status().as_u16(), 200);
+}
+
+#[tokio::test]
+async fn clicking_on_the_confirmation_link_confirms_a_subscriber() {
+    let app = TestApp::spawn().await;
+
+    let body = "name=Alphonse&email=alphonse.paix%40outlook.com";
+
+    Mock::given(path("v1/email"))
+        .and(method("POST"))
+        .respond_with(ResponseTemplate::new(200))
+        .expect(1)
+        .mount(&app.email_server)
+        .await;
+
+    app.post_subscriptions(body.into()).await;
+
+    let email_request = &app.email_server.received_requests().await.unwrap()[0];
+    let confirmation_links = app.get_confirmation_links(email_request);
+    reqwest::get(confirmation_links.html)
+        .await
+        .unwrap()
+        .error_for_status()
+        .unwrap();
+
+    let saved = sqlx::query!("SELECT email, name, status FROM subscriptions")
+        .fetch_one(&app.connection_pool)
+        .await
+        .expect("Failed to fetch saved subscription");
+
+    assert_eq!(saved.email, "alphonse.paix@outlook.com");
+    assert_eq!(saved.name, "Alphonse");
+    assert_eq!(saved.status, "confirmed");
+}