Add processor Docker tests

Adds tests/docker for code common to Docker-based tests.

tests/docker/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "serai-docker-tests"
+version = "0.1.0"
+description = "Docker-based testing infrastructure for Serai"
+license = "AGPL-3.0-only"
+repository = "https://github.com/serai-dex/serai/tree/develop/tests/docker"
+authors = ["Luke Parker <lukeparker5132@gmail.com>"]
+keywords = []
+edition = "2021"
+publish = false
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]

tests/docker/LICENSE

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+AGPL-3.0-only license
+
+Copyright (c) 2023 Luke Parker
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License Version 3 as
+published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.

tests/docker/src/lib.rs

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+use std::{
+  sync::{Mutex, OnceLock},
+  collections::HashMap,
+  env,
+};
+
+static BUILT: OnceLock<Mutex<HashMap<String, bool>>> = OnceLock::new();
+pub fn build(name: String) {
+  let built = BUILT.get_or_init(|| Mutex::new(HashMap::new()));
+  // Only one call to build will acquire this lock
+  let mut built_lock = built.lock().unwrap();
+  if built_lock.contains_key(&name) {
+    // If it was built, return
+    return;
+  }
+
+  // Else, hold the lock while we build
+  let mut path = env::current_exe().unwrap();
+  path.pop();
+  assert!(path.as_path().ends_with("deps"));
+  path.pop();
+  assert!(path.as_path().ends_with("debug"));
+  path.pop();
+  assert!(path.as_path().ends_with("target"));
+  path.pop();
+  path.push("deploy");
+
+  println!("Building {}...", &name);
+
+  assert!(std::process::Command::new("docker")
+    .current_dir(path)
+    .arg("compose")
+    .arg("build")
+    .arg(&name)
+    .spawn()
+    .unwrap()
+    .wait()
+    .unwrap()
+    .success());
+
+  println!("Built!");
+
+  // Set built
+  built_lock.insert(name, true);
+}