memoryd: the crate, memoryd.toml, and listening on a socket

Implemented-By: OpenCode session (model recorded in docs/implementer-log.md)

crates/memoryd/tests/config.rs

@@ -0,0 +1,90 @@
+//! `memoryd.toml`: defaults, paths under `home`, the starter next to the config file, and unknown
+//! keys refused (M5a spec, section 11). Do not edit.
+
+#[path = "support/tmp.rs"]
+mod tmp;
+
+use std::path::PathBuf;
+
+use memoryd::config::Config;
+use proto::DataClass;
+use tmp::TempDir;
+
+#[test]
+fn defaults_and_paths_under_home() {
+    let config = Config::parse("[paths]\nhome = \"/srv/bx\"\n").unwrap();
+    assert!(!config.memory.review);
+    assert_eq!(config.index.max_class, DataClass::Private);
+    assert_eq!(
+        config.loop_socket(),
+        PathBuf::from("/srv/bx/run/loop-memory/memory.sock")
+    );
+    assert_eq!(
+        config.broker_socket(),
+        PathBuf::from("/srv/bx/run/broker-memory/memory.sock")
+    );
+    assert_eq!(
+        config.admin_socket(),
+        PathBuf::from("/srv/bx/run/owner-memory/admin.sock")
+    );
+    assert_eq!(config.memory_dir(), PathBuf::from("/srv/bx/memory"));
+    assert_eq!(
+        config.index_path(),
+        PathBuf::from("/srv/bx/index/memory.sqlite3")
+    );
+    assert_eq!(config.sessions_dir(), PathBuf::from("/srv/bx/sessions"));
+}
+
+#[test]
+fn every_setting_can_be_given() {
+    let text = "[paths]\nhome = \"/h\"\n[memory]\nsoul_starter = \"/etc/bx/soul.md\"\nreview = true\n[index]\nmax_class = \"secret\"\n[sockets]\nloop = \"/r/l.sock\"\nbroker = \"/r/b.sock\"\nadmin = \"/r/a.sock\"\n";
+    let config = Config::parse(text).unwrap();
+    assert!(config.memory.review);
+    assert_eq!(config.index.max_class, DataClass::Secret);
+    assert_eq!(config.memory.soul_starter, PathBuf::from("/etc/bx/soul.md"));
+    assert_eq!(
+        (
+            config.loop_socket(),
+            config.broker_socket(),
+            config.admin_socket()
+        ),
+        (
+            PathBuf::from("/r/l.sock"),
+            PathBuf::from("/r/b.sock"),
+            PathBuf::from("/r/a.sock")
+        )
+    );
+}
+
+#[test]
+fn unknown_keys_are_refused_in_every_table() {
+    for text in [
+        "[paths]\nhomee = \"/h\"\n",
+        "[memory]\nreveiw = true\n",
+        "[index]\nmax = \"private\"\n",
+        "[sockets]\nloopd = \"/x\"\n",
+        "[extra]\n",
+        "[index]\nmax_class = \"top-secret\"\n",
+    ] {
+        assert!(Config::parse(text).is_err(), "{text}");
+    }
+}
+
+#[test]
+fn a_relative_starter_is_next_to_the_config_file() {
+    let dir = TempDir::new("config");
+    let path = dir.write("etc/memoryd.toml", "[memory]\nsoul_starter = \"soul.md\"\n");
+    let config = Config::load(&path).unwrap();
+    assert_eq!(config.memory.soul_starter, dir.path().join("etc/soul.md"));
+    let path = dir.write("etc/default.toml", "");
+    let config = Config::load(&path).unwrap();
+    assert_eq!(config.memory.soul_starter, dir.path().join("etc/soul.md"));
+    let path = dir.write(
+        "etc/abs.toml",
+        "[memory]\nsoul_starter = \"/opt/soul.md\"\n",
+    );
+    let config = Config::load(&path).unwrap();
+    assert_eq!(config.memory.soul_starter, PathBuf::from("/opt/soul.md"));
+    let missing = Config::load(&dir.path().join("nope.toml")).unwrap_err();
+    assert!(missing.to_string().contains("nope.toml"), "{missing}");
+}