Add 'serial_test' create to run serial tests

This crate allows us to easily define a specific test to run in a serial
fashion instead of in parallel.

Author: NunoAlexandre

Cargo.lock

@@ -92,7 +92,11 @@ Black-box tests for the runtime logic are implemented with the client emulator
 in `runtime/tests/main.rs`.
 
 End-to-end tests that run against a real node are implemented in
-`client/tests/end_to_end.rs`
+`client/tests/end_to_end.rs`.
+
+To run specific tests sequentially as opposed to the parallel default,
+we use the [serial-test](https://crates.io/crates/serial_test) crate, simply
+having to mark the targeted tests with `#[serial]`.
 
 
 Changelog

DEVELOPING.md

@@ -69,3 +69,4 @@ rev = "4c4ee3d5b91c4c825aef4fde2b096f014a89346a"
 [dev-dependencies]
 rand = "0.7.2"
 radicle-registry-test-utils = { path = "../test-utils"}
+serial_test = "0.3.2"

client/Cargo.toml

@@ -3,10 +3,13 @@
 //! Note that chain state is shared between the test runs.
 
 use async_std;
+use serial_test::serial;
+
 use radicle_registry_client::*;
 use radicle_registry_test_utils::*;
 
 #[async_std::test]
+#[serial]
 async fn register_project() {
     let _ = env_logger::try_init();
     let node_host = url::Host::parse("127.0.0.1").unwrap();