- update: database client to implement a database trait so we can mock it out

- update unit tests
- add: database client mock

auth-service/src/grpc.rs

@@ -1,17 +1,17 @@
 use tonic::{Request, Response, Status};
 use crate::jwt::{generate_token, validate_token};
 use crate::users::verify_user;
-use crate::database_client::DatabaseClient;
+use crate::database_client::{DatabaseClient, DatabaseClientTrait};
 use crate::auth::auth_service_server::{AuthService};
 use crate::auth::{LoginRequest, LoginResponse, ValidateTokenRequest, ValidateTokenResponse};
 use tracing::{info, warn};
 
-pub struct MyAuthService {
-    pub db_client: DatabaseClient,
+pub struct MyAuthService<T: DatabaseClientTrait + Clone> {
+    pub db_client: T,
 }
 
 #[tonic::async_trait]
-impl AuthService for MyAuthService {
+impl<T: DatabaseClientTrait + Send + Sync + Clone + 'static> AuthService for MyAuthService<T> {
     async fn login(
         &self,
         request: Request<LoginRequest>,