//! library-side

trait Provider {
  async fn upload_program() -> Result<()>;
}

impl Provider for Rpc {}

impl Provider for Gtest {}

//! my-project/client/src/lib.rs

struct Client<T: Provider>;

/// Shared logic for both testing and production
impl<T: Provider> Client<T> {
  pub fn upload_program(self) -> Result<()>;
}

impl Client<Rpc> {
  pub fn complex_logic_for_production();
}

/// Logic for deployment in production
pub fn deploy_prod() -> Result<()> {
    let client: Client<Rpc> = Client::rpc();
    client.upload_code()
}

/// Same logic for testing deployment
#[tokio::test]
async fn test_deploy() -> Result<()> {
    let client: Client<GTest> = Client::gtest();
    client.upload_code()
}