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

- update unit tests
- add: database client mock

auth-service/Cargo.toml

@@ -3,6 +3,9 @@ name = "auth-service"
 version = "0.1.0"
 edition = "2021"
 
+[features]
+mocks = []
+
 [dependencies]
 tokio = { version = "1.41.1", features = ["full"] }
 tonic = "0.12.3"
@@ -15,6 +18,8 @@ tracing-subscriber = { version = "0.3.18", features = ["env-filter", "chrono"] }
 prost = "0.13.3"
 prost-types = "0.13.3"
 chrono = { version = "0.4.38", features = ["serde"] }
+async-trait = "0.1.83"
+mockall = "0.13.1"
 
 [build-dependencies]
 tonic-build = "0.12.3"