Add Rust CLI test

codex-rs/Cargo.lock

@@ -669,14 +669,17 @@ name = "codex-exec"
 version = "0.0.0"
 dependencies = [
  "anyhow",
+ "assert_cmd",
  "chrono",
  "clap",
  "codex-common",
  "codex-core",
  "codex-linux-sandbox",
  "owo-colors",
+ "predicates",
  "serde_json",
  "shlex",
+ "tempfile",
  "tokio",
  "tracing",
  "tracing-subscriber",

codex-rs/exec/Cargo.toml

@@ -37,3 +37,8 @@ tokio = { version = "1", features = [
 ] }
 tracing = { version = "0.1.41", features = ["log"] }
 tracing-subscriber = { version = "0.3.19", features = ["env-filter"] }
+
+[dev-dependencies]
+assert_cmd = "2"
+predicates = "3"
+tempfile = "3"

codex-rs/exec/tests/tool_invocation.rs

@@ -0,0 +1,29 @@
+#![allow(clippy::unwrap_used, clippy::expect_used)]
+
+use codex_core::exec::{ExecParams, SandboxType, process_exec_tool_call};
+use codex_core::protocol::SandboxPolicy;
+use std::collections::HashMap;
+use std::sync::Arc;
+use tokio::sync::Notify;
+
+#[tokio::test]
+async fn echo_command_outputs_text() {
+    let params = ExecParams {
+        command: vec!["echo".into(), "Hello".into()],
+        cwd: std::env::current_dir().unwrap(),
+        timeout_ms: None,
+        env: HashMap::new(),
+    };
+    let policy = SandboxPolicy::new_workspace_write_policy();
+    let output = process_exec_tool_call(
+        params,
+        SandboxType::None,
+        Arc::new(Notify::new()),
+        &policy,
+        &None,
+    )
+    .await
+    .expect("exec failed");
+    assert_eq!(output.exit_code, 0);
+    assert!(output.stdout.contains("Hello"));
+}