zero-to-production/tests/api/subscriptions.rs

152 lines
4.2 KiB
Rust

use crate::helpers::spawn_app;
use wiremock::matchers::{method, path};
use wiremock::{Mock, ResponseTemplate};
#[tokio::test]
async fn subscribe_returns_a_200_for_valid_form_data() {
// 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;
// Act
let response = app.post_subscriptions(body.into()).await;
// Assert
assert_eq!(200, response.status().as_u16());
}
#[tokio::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
app.post_subscriptions(body.into()).await;
// Assert
let saved = sqlx::query!("SELECT email, name, status 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");
assert_eq!(saved.status, "pending_confirmation");
}
#[tokio::test]
async fn subscribe_fails_if_there_is_a_fatal_database_error() {
// Arrange
let app = spawn_app().await;
let body = "name=le%20guin&email=ursula_le_guin%40gmail.com";
// Sabotage the database
sqlx::query!("ALTER TABLE subscriptions DROP COLUMN email;",)
.execute(&app.db_pool)
.await
.unwrap();
// Act
let response = app.post_subscriptions(body.into()).await;
// Assert
assert_eq!(response.status().as_u16(), 500);
}
#[tokio::test]
async fn subscribe_sends_a_confirmation_email_for_valid_data() {
// 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))
.expect(1)
.mount(&app.email_server)
.await;
// Act
app.post_subscriptions(body.into()).await;
// Assert
// Mock asserts on drop
}
#[tokio::test]
async fn subscribe_sends_a_confirmation_email_with_a_link() {
// 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;
// Act
app.post_subscriptions(body.into()).await;
// Assert
let email_request = &app.email_server.received_requests().await.unwrap()[0];
let confirmation_links = app.get_confirmation_links(email_request);
// The two links should be identical
assert_eq!(confirmation_links.html, confirmation_links.plain_text);
}
#[tokio::test]
async fn subscribe_returns_a_400_when_data_is_missing() {
// Arrange
let app = spawn_app().await;
let test_cases = vec![
("name=le%20guin", "missing the email"),
("email=ursula_le_guin%40gmail.com", "missing the name"),
("", "missing both name and email"),
];
for (invalid_body, error_message) in test_cases {
// Act
let response = app.post_subscriptions(invalid_body.into()).await;
// Assert
assert_eq!(
400,
response.status().as_u16(),
// Additional customised error message on test failure
"The API did not fail with 400 Bad Request when the payload was {}.",
error_message
);
}
}
#[tokio::test]
async fn subscribe_returns_a_400_when_fields_are_present_but_invalid() {
// Arrange
let app = spawn_app().await;
let test_cases = vec![
("name=&email=ursula_le_guin%40gmail.com", "empty name"),
("name=Ursula&email=", "empty email"),
("name=Ursula&email=definitely-not-an-email", "invalid email"),
];
for (body, description) in test_cases {
// Act
let response = app.post_subscriptions(body.into()).await;
// Assert
assert_eq!(
400,
response.status().as_u16(),
"The API did not return a 400 Bad Request when the payload was {}.",
description
);
}
}