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Remove offline fallback for models (#11238)

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# External (non-OpenAI) Pull Request Requirements

Before opening this Pull Request, please read the dedicated
"Contributing" markdown file or your PR may be closed:
https://github.com/openai/codex/blob/main/docs/contributing.md

If your PR conforms to our contribution guidelines, replace this text
with a detailed and high quality description of your changes.

Include a link to a bug report or enhancement request.
This commit is contained in:
Ahmed Ibrahim
2026-02-09 16:58:54 -08:00
committed by GitHub
parent a3e4bd3bc0
commit a1abd53b6a
8 changed files with 122 additions and 499 deletions
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62
codex-rs/core/tests/suite/truncation.rs
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@@ -18,7 +18,6 @@ use core_test_support::responses::ev_completed;
use core_test_support::responses::ev_function_call;
use core_test_support::responses::ev_response_created;
use core_test_support::responses::mount_sse_once;
use core_test_support::responses::mount_sse_sequence;
use core_test_support::responses::sse;
use core_test_support::responses::start_mock_server;
use core_test_support::skip_if_no_network;
@@ -30,67 +29,6 @@ use serde_json::json;
use std::collections::HashMap;
use std::time::Duration;
// Verifies byte-truncation formatting for function error output (RespondToModel errors)
#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
async fn truncate_function_error_trims_respond_to_model() -> Result<()> {
skip_if_no_network!(Ok(()));
let server = start_mock_server().await;
let mut builder = test_codex().with_model("test-gpt-5.1-codex");
let test = builder.build(&server).await?;
// Construct a very long, non-existent path to force a RespondToModel error with a large message
let long_path = "long path text should trigger truncation".repeat(8_000);
let call_id = "grep-huge-error";
let args = json!({
"pattern": "alpha",
"path": long_path,
"limit": 10
});
let responses = vec![
sse(vec![
ev_response_created("resp-1"),
ev_function_call(call_id, "grep_files", &serde_json::to_string(&args)?),
ev_completed("resp-1"),
]),
sse(vec![
ev_assistant_message("msg-1", "done"),
ev_completed("resp-2"),
]),
];
let mock = mount_sse_sequence(&server, responses).await;
test.submit_turn_with_policy(
"trigger grep_files with long path to test truncation",
SandboxPolicy::DangerFullAccess,
)
.await?;
let output = mock
.function_call_output_text(call_id)
.context("function error output present")?;
tracing::debug!(output = %output, "truncated function error output");
// Expect plaintext with token-based truncation marker and no omitted-lines marker
assert!(
serde_json::from_str::<serde_json::Value>(&output).is_err(),
"expected error output to be plain text",
);
assert!(
!output.contains("Total output lines:"),
"error output should not include line-based truncation header: {output}",
);
let truncated_pattern = r"(?s)^unable to access `.*tokens truncated.*$";
assert_regex_match(truncated_pattern, &output);
assert!(
!output.contains("omitted"),
"line omission marker should not appear when no lines were dropped: {output}"
);
Ok(())
}
// Verifies that a standard tool call (shell_command) exceeding the model formatting
// limits is truncated before being sent back to the model.
#[tokio::test(flavor = "multi_thread", worker_threads = 2)]