test(ollama): validate tool bridge via wiremock

codex-rs/ollama/tests/wiremock_integration.rs

@@ -0,0 +1,58 @@
+use std::sync::Arc;
+
+use codex_core::ResponseEvent;
+use codex_core::ResponseItem;
+use codex_core::spawn::CODEX_SANDBOX_NETWORK_DISABLED_ENV_VAR;
+use codex_ollama::OllamaBackend;
+use codex_ollama::OllamaToolBridge;
+use pretty_assertions::assert_eq;
+use wiremock::Mock;
+use wiremock::MockServer;
+use wiremock::ResponseTemplate;
+use wiremock::matchers::method;
+use wiremock::matchers::path;
+
+#[tokio::test]
+async fn sends_json_prompt_and_parses_tool_call() {
+    if std::env::var(CODEX_SANDBOX_NETWORK_DISABLED_ENV_VAR).is_ok() {
+        println!(
+            "Skipping test because it cannot execute when network is disabled in a Codex sandbox.",
+        );
+        return;
+    }
+
+    let server = MockServer::start().await;
+
+    let tool_json = "{\"type\":\"tool\",\"name\":\"t\",\"input\":{}}";
+    let template = ResponseTemplate::new(200).set_body_json(serde_json::json!({
+        "model": "m",
+        "created_at": "2024-01-01T00:00:00Z",
+        "response": tool_json,
+        "done": true
+    }));
+
+    Mock::given(method("POST"))
+        .and(path("/api/generate"))
+        .respond_with(template)
+        .expect(1)
+        .mount(&server)
+        .await;
+
+    let backend = OllamaBackend::with_tool_bridge(&server.uri(), Arc::new(OllamaToolBridge))
+        .expect("backend");
+
+    let events = backend.chat("m", "hi").await.expect("chat");
+
+    let requests = server.received_requests().await.expect("requests");
+    let body: serde_json::Value = serde_json::from_slice(&requests[0].body).expect("json");
+    let prompt = body["prompt"].as_str().expect("prompt str");
+    assert!(prompt.contains("Respond only with JSON"));
+
+    match &events[0] {
+        ResponseEvent::OutputItemDone(ResponseItem::CustomToolCall { name, input, .. }) => {
+            assert_eq!(name, "t");
+            assert_eq!(input, "{}");
+        }
+        other => panic!("unexpected event: {other:?}"),
+    }
+}