Add database pool integration tests.

contrib/codegen/tests/ui-fail/database-types.rs

@@ -7,4 +7,8 @@ struct Unknown;
 struct A(Unknown);
 //~^ ERROR Unknown: rocket_contrib::databases::Poolable
 
+#[database("foo")]
+struct B(Vec<i32>);
+//~^ ERROR Vec<i32>: rocket_contrib::databases::Poolable
+
 fn main() {  }

contrib/codegen/tests/ui-fail/database-types.stderr

@@ -4,6 +4,12 @@ error[E0277]: the trait bound `Unknown: rocket_contrib::databases::Poolable` is
 7 | struct A(Unknown);
   |          ^^^^^^^ the trait `rocket_contrib::databases::Poolable` is not implemented for `Unknown`
 
-error: aborting due to previous error
+error[E0277]: the trait bound `std::vec::Vec<i32>: rocket_contrib::databases::Poolable` is not satisfied
+  --> $DIR/database-types.rs:11:10
+   |
+11 | struct B(Vec<i32>);
+   |          ^^^^^^^^ the trait `rocket_contrib::databases::Poolable` is not implemented for `std::vec::Vec<i32>`
+
+error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0277`.

contrib/lib/src/databases.rs

@@ -338,7 +338,7 @@
 //! [Diesel]: https://diesel.rs
 //! [`redis::Connection`]: https://docs.rs/redis/0.9.0/redis/struct.Connection.html
 //! [`rusted_cypher::GraphClient`]: https://docs.rs/rusted_cypher/1.1.0/rusted_cypher/graph/struct.GraphClient.html
-//! [`rusqlite::Connection`]: https://docs.rs/rusqlite/0.13.0/rusqlite/struct.Connection.html
+//! [`rusqlite::Connection`]: https://docs.rs/rusqlite/0.14.0/rusqlite/struct.Connection.html
 //! [`diesel::SqliteConnection`]: http://docs.diesel.rs/diesel/prelude/struct.SqliteConnection.html
 //! [`postgres::Connection`]: https://docs.rs/postgres/0.15.2/postgres/struct.Connection.html
 //! [`diesel::PgConnection`]: http://docs.diesel.rs/diesel/pg/struct.PgConnection.html

contrib/lib/tests/databases.rs

@@ -11,3 +11,52 @@ mod databases_tests {
     #[database("bar")]
     struct PrimaryDb(diesel::PgConnection);
 }
+
+#[cfg(all(feature = "databases", feature = "sqlite_pool"))]
+#[cfg(test)]
+mod rusqlite_integration_test {
+    use std::collections::BTreeMap;
+    use rocket::config::{Config, Environment, Value};
+    use rocket_contrib::databases::rusqlite;
+    use rocket_contrib::database;
+
+    #[database("test_db")]
+    struct SqliteDb(pub rusqlite::Connection);
+
+    #[test]
+    fn deref_mut_impl_present() {
+        let mut test_db: BTreeMap<String, Value> = BTreeMap::new();
+        let mut test_db_opts: BTreeMap<String, Value> = BTreeMap::new();
+        test_db_opts.insert("url".into(), Value::String(":memory:".into()));
+        test_db.insert("test_db".into(), Value::Table(test_db_opts));
+        let config = Config::build(Environment::Development)
+            .extra("databases", Value::Table(test_db))
+            .finalize()
+            .unwrap();
+
+        let rocket = rocket::custom(config).attach(SqliteDb::fairing());
+        let mut conn = SqliteDb::get_one(&rocket).expect("unable to get connection");
+
+        // Rusqlite's `transaction()` method takes `&mut self`; this tests the
+        // presence of a `DerefMut` trait on the generated connection type.
+        let tx = conn.transaction().unwrap();
+        let _: i32 = tx.query_row("SELECT 1", &[], |row| row.get(0)).expect("get row");
+        tx.commit().expect("committed transaction");
+    }
+
+    #[test]
+    fn deref_impl_present() {
+        let mut test_db: BTreeMap<String, Value> = BTreeMap::new();
+        let mut test_db_opts: BTreeMap<String, Value> = BTreeMap::new();
+        test_db_opts.insert("url".into(), Value::String(":memory:".into()));
+        test_db.insert("test_db".into(), Value::Table(test_db_opts));
+        let config = Config::build(Environment::Development)
+            .extra("databases", Value::Table(test_db))
+            .finalize()
+            .unwrap();
+
+        let rocket = rocket::custom(config).attach(SqliteDb::fairing());
+        let conn = SqliteDb::get_one(&rocket).expect("unable to get connection");
+        let _: i32 = conn.query_row("SELECT 1", &[], |row| row.get(0)).expect("get row");
+    }
+}

site/guide/6-state.md

@@ -193,7 +193,7 @@ Presently, Rocket provides built-in support for the following databases:
 [Diesel]: https://diesel.rs
 [`redis::Connection`]: https://docs.rs/redis/0.9.0/redis/struct.Connection.html
 [`rusted_cypher::GraphClient`]: https://docs.rs/rusted_cypher/1.1.0/rusted_cypher/graph/struct.GraphClient.html
-[`rusqlite::Connection`]: https://docs.rs/rusqlite/0.13.0/rusqlite/struct.Connection.html
+[`rusqlite::Connection`]: https://docs.rs/rusqlite/0.14.0/rusqlite/struct.Connection.html
 [`diesel::SqliteConnection`]: http://docs.diesel.rs/diesel/prelude/struct.SqliteConnection.html
 [`postgres::Connection`]: https://docs.rs/postgres/0.15.2/postgres/struct.Connection.html
 [`diesel::PgConnection`]: http://docs.diesel.rs/diesel/pg/struct.PgConnection.html