save session metadata

codex-rs/session/tests/meta_round_trip.rs

@@ -0,0 +1,36 @@
+//! Simple round-trip test that serialises a freshly constructed `SessionMeta`
+//! and deserialises it back to ensure the schema is self-consistent.
+
+use codex_session::meta::{AgentCli, SessionMeta};
+use codex_session::store::SessionKind;
+
+#[test]
+fn meta_round_trip() {
+    let exec_cli = codex_exec::Cli {
+        images: vec![],
+        model: Some("gpt-4o-mini".into()),
+        skip_git_repo_check: true,
+        disable_response_storage: false,
+        prompt: Some("hello world".into()),
+    };
+
+    let meta = SessionMeta::new(
+        "test-session".into(),
+        42,
+        SessionKind::Exec,
+        AgentCli::Exec(exec_cli.clone()),
+        exec_cli.prompt.clone(),
+    );
+
+    // Serialise with pretty printer so humans can read the file as well.
+    let json = serde_json::to_string_pretty(&meta).expect("serialise");
+
+    // … and parse it back.
+    let de: SessionMeta = serde_json::from_str(&json).expect("deserialise");
+
+    assert_eq!(de.version, SessionMeta::CURRENT_VERSION);
+    assert_eq!(de.id, "test-session");
+    assert_eq!(de.pid, 42);
+    assert!(matches!(de.cli, AgentCli::Exec(_)));
+}
+