claude
48979193b9
Milestone-fieldtest friction: a single-OOS-window walk-forward printed "all 1 walk-forward windows recorded zero trades" (captured RED evidence: fieldtests/milestone-stderr-honesty/captured/ example2_singular.err). The message text moves into a pure zero-trade_note_text builder — singular "the single walk-forward window recorded zero trades", plural unchanged so the existing e2e phrase pins hold — with a unit pin on both forms. refs #278
66 lines
2.3 KiB
Rust
66 lines
2.3 KiB
Rust
//! Stable stderr class markers (C14): `aura: note: <text>` for benign
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//! diagnostics on a continuing run (exit code unaffected),
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//! `aura: warning: <text>` for recorded faults the run survives.
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//! Error lines that accompany a non-zero exit — and plain info lines
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//! such as the run-record summary — keep the bare `aura:` prefix; for
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//! errors, the exit-code partition is the machine contract.
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macro_rules! note {
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($($arg:tt)*) => {
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eprintln!("aura: note: {}", format_args!($($arg)*))
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};
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}
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macro_rules! warning {
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($($arg:tt)*) => {
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eprintln!("aura: warning: {}", format_args!($($arg)*))
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};
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}
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pub(crate) use {note, warning};
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/// The zero-trade note's message text (#313), pluralization-aware — the
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/// milestone fieldtest tripped over "all 1 walk-forward windows"
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/// (captured: `fieldtests/milestone-stderr-honesty/captured/
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/// example2_singular.err`). Pure over the count so the wording is
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/// unit-pinned.
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fn zero_trade_note_text(n_windows: usize) -> String {
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if n_windows == 1 {
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"the single walk-forward window recorded zero trades".to_string()
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} else {
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format!("all {n_windows} walk-forward windows recorded zero trades")
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}
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}
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/// The #313 zero-trade note, shared by both walk-forward paths (the
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/// synthetic-blueprint path in `main.rs` and the `--real` sugar path in
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/// `verb_sugar.rs`) so the wording AND the condition live in exactly one
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/// place. Takes the per-window trade counts; a no-op unless there is at
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/// least one window and every one of them traded zero times.
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pub(crate) fn note_zero_trade_windows(mut window_trades: impl ExactSizeIterator<Item = u64>) {
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let n_windows = window_trades.len();
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if n_windows > 0 && window_trades.all(|n| n == 0) {
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note!("{}", zero_trade_note_text(n_windows));
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}
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}
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#[cfg(test)]
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mod tests {
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use super::zero_trade_note_text;
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#[test]
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/// #278 fieldtest friction: the single-window form must read as
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/// grammatical English while the plural form keeps the exact phrase
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/// the e2e pins grep for.
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fn zero_trade_note_pluralizes() {
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assert_eq!(
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zero_trade_note_text(1),
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"the single walk-forward window recorded zero trades"
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);
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assert_eq!(
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zero_trade_note_text(3),
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"all 3 walk-forward windows recorded zero trades"
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);
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}
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}
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