Files
cortex/crates/cortex-gateway/tests/streaming.rs
rob thijssen 3cccc2c56b refactor(neuron): cut mistralrs/llamacpp, scaffold candle harness
Stage 1 of the candle-native pivot. Replaces the external-process
harness model (mistralrs over HTTP, llamacpp placeholder) with an
in-process Harness trait whose sole implementation is candle. The
trait keeps its shape so future engines slot in additively, but
start/stop default to no-ops and HarnessConfig drops endpoint and
systemd_unit since no harness needs external supervision.

Behaviour is unchanged on the wire: load_model returns a "not
implemented yet (Stage 2)" error and list_models is empty. The
gateway-side proxy, poller, and router are untouched.

CLAUDE.md Phase 11 (llama.cpp) and Phase 12 (mistral.rs COPR) are
marked superseded; the staged plan lives in
~/.claude/plans/create-a-more-aggressive-calm-naur.md.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-18 15:53:04 +03:00

110 lines
3.2 KiB
Rust

mod common;
use futures::StreamExt;
use serde_json::json;
use std::time::{Duration, Instant};
#[tokio::test]
async fn test_streaming_sse_passthrough() {
let chunk_count = 5;
let chunk_delay = Duration::from_millis(50);
let mock_url = common::spawn_streaming_mock_neuron(chunk_count, chunk_delay).await;
let gw_url = common::spawn_gateway(&mock_url).await;
let client = reqwest::Client::new();
let resp = client
.post(format!("{gw_url}/v1/chat/completions"))
.header("content-type", "application/json")
.json(&json!({
"model": "test-model",
"messages": [{"role": "user", "content": "Hi"}],
"stream": true
}))
.send()
.await
.expect("request should succeed");
assert_eq!(resp.status(), 200);
assert_eq!(
resp.headers()
.get("content-type")
.and_then(|v| v.to_str().ok())
.unwrap_or(""),
"text/event-stream"
);
let start = Instant::now();
let mut chunk_times = Vec::new();
let mut chunks = Vec::new();
let mut stream = resp.bytes_stream();
while let Some(result) = stream.next().await {
let bytes = result.expect("chunk should be valid");
let text = String::from_utf8_lossy(&bytes);
for line in text.split("data: ").filter(|s| !s.is_empty()) {
let trimmed = line.trim();
if !trimmed.is_empty() {
chunk_times.push(start.elapsed());
chunks.push(trimmed.to_string());
}
}
}
assert!(
chunks.len() > chunk_count,
"expected more than {} chunks (got {}): {:?}",
chunk_count,
chunks.len(),
chunks,
);
assert_eq!(chunks.last().unwrap(), "[DONE]");
for (i, chunk) in chunks.iter().enumerate().take(chunk_count) {
let chunk_json: serde_json::Value =
serde_json::from_str(chunk).expect("chunk should be valid JSON");
assert_eq!(
chunk_json["choices"][0]["delta"]["content"],
format!("token{i}")
);
}
let first = chunk_times.first().unwrap();
let last = chunk_times.last().unwrap();
let spread = *last - *first;
assert!(
spread >= Duration::from_millis(100),
"chunks should arrive incrementally (spread: {spread:?})",
);
}
#[tokio::test]
async fn test_streaming_done_terminator() {
let mock_url = common::spawn_streaming_mock_neuron(2, Duration::from_millis(10)).await;
let gw_url = common::spawn_gateway(&mock_url).await;
let client = reqwest::Client::new();
let resp = client
.post(format!("{gw_url}/v1/chat/completions"))
.header("content-type", "application/json")
.json(&json!({
"model": "test-model",
"messages": [{"role": "user", "content": "Hi"}],
"stream": true
}))
.send()
.await
.expect("request should succeed");
let body = resp.text().await.unwrap();
assert!(
body.contains("data: [DONE]"),
"response must contain [DONE] terminator"
);
assert!(body.contains("token0"), "response must contain first token");
assert!(
body.contains("token1"),
"response must contain second token"
);
}