Add use_dependencies feature flag

example-app/Cargo.toml

@@ -14,9 +14,13 @@ serde_json = "1.0.103"
 tokio = { version = "1.29.1", features = ["macros", "rt-multi-thread"] }
 tower = "0.4.13"
 ureq = "2.7.1"
+mime = { version = "0.3.17", optional = true }
 
 [build-dependencies]
 prost-build = "0.12"
 
 [dev-dependencies]
 mockito = "1.1.0"
+
+[features]
+use_dependencies = ["mime"]

example-app/README.md

@@ -28,6 +28,10 @@ axum::Server::bind(&address)
 cargo test
 cargo run
 ```
+These commands include a few (and hopefully growing number of) re-implemented library crates. I challenged myself to maintain the same interface and learn how these libraries work. To run with the original dependencies, this works.
+```
+cargo test --features "use_dependencies"
+```
 
 ## Sample Feed
 ```

example-app/src/api.rs

@@ -136,7 +136,9 @@ async fn list_handler(state: State<AppState>) -> impl IntoResponse {
 
 #[cfg(test)]
 mod api_tests {
+    #[cfg(not(feature = "use_dependencies"))]
     use crate::deps::mime;
+
     use crate::fetcher::Feed;
     use crate::scheduler_interface::{SchedulerInterface, TaskSender};
     use tulsa::AsyncTask;