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Keep live module page fixture open for repeated requests #24

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Merged
senamakel merged 1 commit into from
Sep 25, 2026
Merged

Keep live module page fixture open for repeated requests #24

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58 changes: 42 additions & 16 deletions crates/tinybrowser/src/tinybus_module/test.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -226,34 +226,60 @@ fn options() -> tinybrowser_bus::SessionOptions {
}
}

/// Serves one page on loopback and returns its URL.
/// Serves one page on loopback for every browser request and returns its URL.
async fn serve(body: &'static str) -> String {
let listener = tokio::net::TcpListener::bind("127.0.0.1:0")
.await
.expect("binds a loopback port");
let address = listener.local_addr().expect("has an address");

tokio::spawn(async move {
let Ok((mut stream, _)) = listener.accept().await else {
return;
};
let mut scratch = [0_u8; 2048];
let _ = stream.read(&mut scratch).await;
let document = format!(
"<!doctype html><html><head><title>bus</title></head><body>{body}</body></html>"
);
let response = format!(
"HTTP/1.1 200 OK\r\nContent-Type: text/html; charset=utf-8\r\n\
Content-Length: {}\r\nConnection: close\r\n\r\n{document}",
document.len()
);
let _ = stream.write_all(response.as_bytes()).await;
let _ = stream.shutdown().await;
while let Ok((mut stream, _)) = listener.accept().await {
tokio::spawn(async move {
let mut scratch = [0_u8; 2048];
let _ = stream.read(&mut scratch).await;
let document = format!(
"<!doctype html><html><head><title>bus</title></head><body>{body}</body></html>"
);
let response = format!(
"HTTP/1.1 200 OK\r\nContent-Type: text/html; charset=utf-8\r\n\
Content-Length: {}\r\nConnection: close\r\n\r\n{document}",
document.len()
);
let _ = stream.write_all(response.as_bytes()).await;
let _ = stream.shutdown().await;
});
}
});

format!("http://{address}/")
}

#[tokio::test]
async fn page_fixture_serves_repeated_document_requests() {
let url = serve("<h1>Bus</h1>").await;
let address = url
.strip_prefix("http://")
.expect("loopback http URL")
.trim_end_matches('/');
for _ in 0..2 {
let mut stream = tokio::net::TcpStream::connect(address)
.await
.expect("fixture accepts another connection");
stream
.write_all(b"GET / HTTP/1.1\r\nHost: localhost\r\nConnection: close\r\n\r\n")
.await
.expect("send request");
let mut response = String::new();
stream
.read_to_string(&mut response)
.await
.expect("read response");
assert!(response.contains("200 OK"));
assert!(response.contains("<h1>Bus</h1>"));
}
}

async fn serve_download() -> String {
let listener = tokio::net::TcpListener::bind("127.0.0.1:0")
.await
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