feat: sqlx migrations in test hooks

sql/bootstrap/roles.down.sql

@@ -0,0 +1,4 @@
+DROP DATABASE RATINGS;
+DROP USER IF EXISTS service;
+REVOKE USAGE, CREATE ON SCHEMA public FROM migration_user;
+DROP USER IF EXISTS migration_user;

sql/bootstrap/roles.up.sql

@@ -0,0 +1,6 @@
+CREATE USER migration_user WITH PASSWORD 'strongpassword';
+CREATE USER service WITH PASSWORD 'covfefe!1';
+CREATE DATABASE ratings;
+-- /c ratings;
+GRANT CONNECT ON DATABASE ratings TO migration_user;
+GRANT USAGE, CREATE ON SCHEMA public TO migration_user;

sql/migrations/20230829085908_ratings_init.down.sql

@@ -0,0 +1,9 @@
+REVOKE ALL PRIVILEGES ON TABLE users FROM service;
+REVOKE USAGE, SELECT ON SEQUENCE users_id_seq FROM service;
+REVOKE ALL PRIVILEGES ON TABLE votes FROM service;
+REVOKE USAGE, SELECT ON SEQUENCE votes_id_seq FROM service;
+REVOKE CONNECT ON DATABASE ratings FROM service;
+
+DROP TABLE IF EXISTS votes;
+DROP TABLE IF EXISTS users;
+

sql/init.sql → sql/migrations/20230829085908_ratings_init.up.sql

@@ -1,4 +1,3 @@
---
 -- Create database and then execute the second set of commands when connected
 -- to the ratings database
 --
@@ -8,6 +7,7 @@
 -- CREATE DATABASE IF EXISTS ratings;
 
 -- Stage 2
+--
 
 CREATE TABLE users (
    id SERIAL PRIMARY KEY,
@@ -31,8 +31,6 @@ CREATE TABLE votes (
 -- can't vote more than once for the same snap revision.
 CREATE UNIQUE INDEX idx_votes_unique_user_snap ON votes (user_id_fk, snap_id, snap_revision);
 
--- Permissions
-CREATE USER service WITH PASSWORD 'covfefe!1';
 GRANT ALL PRIVILEGES ON TABLE users TO service;
 GRANT USAGE, SELECT ON SEQUENCE users_id_seq TO service;
 GRANT ALL PRIVILEGES ON TABLE votes TO service;

src/utils/config.rs

@@ -10,6 +10,7 @@ pub struct Config {
     pub name: String,
     pub port: u16,
     pub postgres_uri: String,
+    pub migration_postgres_uri: String,
 }
 
 impl Config {

src/utils/migrator.rs

@@ -0,0 +1,41 @@
+use std::error::Error;
+use std::fmt::{Debug, Formatter};
+use std::sync::Arc;
+
+use sqlx::{postgres::PgPoolOptions, PgPool};
+
+const MIGRATIONS_PATH: &str = "sql/migrations";
+
+#[derive(Clone)]
+pub struct Migrator {
+    pub pool: Arc<PgPool>,
+}
+
+impl Migrator {
+    pub async fn new(uri: &str) -> Result<Migrator, Box<dyn Error>> {
+        let pool = PgPoolOptions::new().max_connections(1).connect(uri).await?;
+        let pool = Arc::new(pool);
+        Ok(Migrator { pool })
+    }
+
+    pub async fn run(&self) -> Result<(), sqlx::Error> {
+        let m = sqlx::migrate::Migrator::new(std::path::Path::new(MIGRATIONS_PATH)).await?;
+
+        m.run(&mut self.pool.acquire().await?).await?;
+        Ok(())
+    }
+
+    pub async fn revert(&self) -> Result<(), sqlx::Error> {
+        let m = sqlx::migrate::Migrator::new(std::path::Path::new(MIGRATIONS_PATH)).await?;
+
+        m.undo(&mut self.pool.acquire().await?, 1).await?;
+
+        Ok(())
+    }
+}
+
+impl Debug for Migrator {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        f.write_str("Migrator { migrations_pool }")
+    }
+}

src/utils/mod.rs

@@ -1,6 +1,8 @@
 pub mod config;
 pub mod infrastructure;
 pub mod jwt;
+pub mod migrator;
 
 pub use config::Config;
 pub use infrastructure::Infrastructure;
+pub use migrator::Migrator;

tests/app_tests/lifecycle_test.rs

@@ -1,7 +1,7 @@
 use futures::FutureExt;
 use ratings::{
     app::AppContext,
-    utils::{Config, Infrastructure},
+    utils::{Config, Infrastructure, Migrator},
 };
 
 use super::super::helpers::with_lifecycle::with_lifecycle;
@@ -19,17 +19,22 @@ async fn app_lifecycle_test() -> Result<(), Box<dyn std::error::Error>> {
     let infra = Infrastructure::new(&config).await?;
     let app_ctx = AppContext::new(&config, infra);
 
-    with_lifecycle(async {
-        let data = TestData {
-            user_client: Some(UserClient::new(&config.socket())),
-            app_ctx,
-            id: None,
-            token: None,
-            app_client: Some(AppClient::new(&config.socket())),
-            snap_id: Some(data_faker::rnd_id()),
-        };
-        vote_once(data).then(vote_up).await;
-    })
+    let migrator = Migrator::new(&config.migration_postgres_uri).await?;
+    let data = TestData {
+        user_client: Some(UserClient::new(&config.socket())),
+        app_ctx,
+        id: None,
+        token: None,
+        app_client: Some(AppClient::new(&config.socket())),
+        snap_id: Some(data_faker::rnd_id()),
+    };
+
+    with_lifecycle(
+        async {
+            vote_once(data.clone()).then(vote_up).await;
+        },
+        migrator,
+    )
     .await;
     Ok(())
 }

tests/helpers/hooks.rs

@@ -1,19 +1,32 @@
-use std::sync::Arc;
+use std::sync::{Arc, Once};
 
 use once_cell::sync::Lazy;
+use ratings::utils::Migrator;
 use tokio::sync::Mutex;
 
-static INITIALIZATION_FLAG: Lazy<Arc<Mutex<bool>>> = Lazy::new(|| Arc::new(Mutex::new(false)));
-
-pub async fn before_all() {
-    let mutex = Arc::clone(&*INITIALIZATION_FLAG);
-    let mut initialised = mutex.lock().await;
-
-    if !*initialised {
-        *initialised = true;
+static INIT: Once = Once::new();
+static TEST_COUNTER: Lazy<Arc<Mutex<i32>>> = Lazy::new(|| Arc::new(Mutex::new(0)));
 
+pub async fn before_all(migrator: Migrator) {
+    INIT.call_once(|| {
         tracing_subscriber::fmt().init();
+    });
+    if let Err(e) = migrator.run().await {
+        panic!("{}", e)
     }
+
+    let counter = Arc::clone(&*TEST_COUNTER);
+    let mut test_counter = counter.lock().await;
+    *test_counter += 1;
 }
 
-pub async fn after_all() {}
+pub async fn after_all(migrator: Migrator) {
+    let counter = Arc::clone(&*TEST_COUNTER);
+    let mut test_counter = counter.lock().await;
+    *test_counter -= 1;
+    if *test_counter == 0 {
+        if let Err(e) = migrator.revert().await {
+            panic!("{}", e)
+        }
+    }
+}

tests/helpers/with_lifecycle.rs

@@ -1,12 +1,13 @@
 use std::future::Future;
 
 use crate::helpers::hooks::{after_all, before_all};
+use ratings::utils::Migrator;
 
-pub async fn with_lifecycle<F>(f: F)
+pub async fn with_lifecycle<F>(f: F, migrator: Migrator)
 where
     F: Future<Output = ()>,
 {
-    before_all().await;
+    before_all(migrator.clone()).await;
     f.await;
-    after_all().await;
+    after_all(migrator.clone()).await;
 }

tests/user_tests/reject_invalid_register_test.rs

@@ -1,42 +1,50 @@
-use ratings::utils::Config;
+use ratings::utils::{Config, Migrator};
 use tonic::Code;
 
 use super::super::helpers::{client_user::UserClient, with_lifecycle::with_lifecycle};
 
 #[tokio::test]
 async fn blank() -> Result<(), Box<dyn std::error::Error>> {
     let config = Config::load()?;
+    let migrator = Migrator::new(&config.migration_postgres_uri).await?;
 
-    with_lifecycle(async {
-        let id = "";
-        let client = UserClient::new(&config.socket());
+    with_lifecycle(
+        async {
+            let id = "";
+            let client = UserClient::new(&config.socket());
 
-        match client.register(id).await {
-            Ok(response) => panic!("expected Err but got Ok: {response:?}"),
-            Err(status) => {
-                assert_eq!(status.code(), Code::InvalidArgument)
+            match client.register(id).await {
+                Ok(response) => panic!("expected Err but got Ok: {response:?}"),
+                Err(status) => {
+                    assert_eq!(status.code(), Code::InvalidArgument)
+                }
             }
-        }
-    })
+        },
+        migrator,
+    )
     .await;
     Ok(())
 }
 
 #[tokio::test]
 async fn wrong_length() -> Result<(), Box<dyn std::error::Error>> {
     let config = Config::load()?;
+    let migrator = Migrator::new(&config.migration_postgres_uri).await?;
 
-    with_lifecycle(async {
-        let client_hash = "foobarbazbun";
-        let client = UserClient::new(&config.socket());
+    with_lifecycle(
+        async {
+            let client_hash = "foobarbazbun";
+            let client = UserClient::new(&config.socket());
 
-        match client.register(client_hash).await {
-            Ok(response) => panic!("expected Err but got Ok: {response:?}"),
-            Err(status) => {
-                assert_eq!(status.code(), Code::InvalidArgument)
+            match client.register(client_hash).await {
+                Ok(response) => panic!("expected Err but got Ok: {response:?}"),
+                Err(status) => {
+                    assert_eq!(status.code(), Code::InvalidArgument)
+                }
             }
-        }
-    })
+        },
+        migrator,
+    )
     .await;
     Ok(())
 }

tests/user_tests/simple_lifecycle_test.rs

@@ -6,7 +6,7 @@ use super::super::helpers::client_user::UserClient;
 use super::super::helpers::with_lifecycle::with_lifecycle;
 use futures::FutureExt;
 use ratings::app::AppContext;
-use ratings::utils::{self, Infrastructure};
+use ratings::utils::{self, Infrastructure, Migrator};
 use sqlx::Row;
 
 use utils::Config;
@@ -16,22 +16,27 @@ async fn user_simple_lifecycle_test() -> Result<(), Box<dyn std::error::Error>>
     let config = Config::load()?;
     let infra = Infrastructure::new(&config).await?;
     let app_ctx = AppContext::new(&config, infra);
+    let migrator = Migrator::new(&config.migration_postgres_uri).await?;
+
+    let data = TestData {
+        user_client: Some(UserClient::new(&config.socket())),
+        app_ctx,
+        id: None,
+        token: None,
+        app_client: None,
+        snap_id: None,
+    };
 
-    with_lifecycle(async {
-        let data = TestData {
-            user_client: Some(UserClient::new(&config.socket())),
-            app_ctx,
-            id: None,
-            token: None,
-            app_client: None,
-            snap_id: None,
-        };
-        register(data)
-            .then(authenticate)
-            .then(vote)
-            .then(delete)
-            .await;
-    })
+    with_lifecycle(
+        async {
+            register(data.clone())
+                .then(authenticate)
+                .then(vote)
+                .then(delete)
+                .await;
+        },
+        migrator,
+    )
     .await;
     Ok(())
 }