codex: add persistent thread timers

codex-rs/tools/src/timer_tool_tests.rs

@@ -0,0 +1,43 @@
+use crate::ResponsesApiTool;
+use crate::ToolSpec;
+use pretty_assertions::assert_eq;
+
+use super::create_delete_timer_tool;
+use super::create_list_timers_tool;
+use super::create_timer_tool;
+
+#[test]
+fn timer_create_tool_uses_expected_name() {
+    let ToolSpec::Function(ResponsesApiTool { name, .. }) = create_timer_tool() else {
+        panic!("expected function tool");
+    };
+    assert_eq!(name, "create_timer");
+}
+
+#[test]
+fn timer_create_tool_exposes_only_core_timer_payload_fields() {
+    let ToolSpec::Function(ResponsesApiTool { parameters, .. }) = create_timer_tool() else {
+        panic!("expected function tool");
+    };
+    let properties = parameters.properties.expect("create_timer properties");
+
+    assert!(properties.contains_key("content"));
+    assert!(!properties.contains_key("prompt"));
+    assert!(!properties.contains_key("instructions"));
+}
+
+#[test]
+fn timer_delete_tool_uses_expected_name() {
+    let ToolSpec::Function(ResponsesApiTool { name, .. }) = create_delete_timer_tool() else {
+        panic!("expected function tool");
+    };
+    assert_eq!(name, "delete_timer");
+}
+
+#[test]
+fn timer_list_tool_uses_expected_name() {
+    let ToolSpec::Function(ResponsesApiTool { name, .. }) = create_list_timers_tool() else {
+        panic!("expected function tool");
+    };
+    assert_eq!(name, "list_timers");
+}