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// SPDX-License-Identifier: MIT OR Apache-2.0
// Copyright (c) 2026 Noyalib. All rights reserved.
//! Coverage for the lenient-recovery branch arms in `recovery.rs`:
//! the zero-budget short-circuit, the Pass-2 (duplicate-key) error
//! collection, and the line-truncation whitespace-candidate skip.
#![cfg(feature = "recovery")]
#![allow(missing_docs)]
#![allow(clippy::unwrap_used)]
use noyalib::recovery::{LenientConfig, parse_lenient_with};
use noyalib::{DuplicateKeyPolicy, ParserConfig};
#[test]
fn zero_error_budget_short_circuits_to_null() {
// `budget == 0` (max_errors: 0) makes recover_one bail before even
// the strict pass, returning Null with no diagnostics.
let cfg = LenientConfig {
max_errors: 0,
..LenientConfig::default()
};
let r = parse_lenient_with("a: [unclosed\n", &cfg);
assert!(r.value.is_null(), "zero budget must yield Null");
assert!(r.errors.is_empty(), "zero budget collects no errors");
}
#[test]
fn pass2_duplicate_key_error_is_collected() {
// With a non-`Last` base policy, a duplicate key fails the strict
// pass; the Pass-2 retry switches to `Last` but the *other* error
// (an unterminated flow sequence) still fails — so the Pass-2 error
// is pushed alongside the strict one.
let base = ParserConfig::default().duplicate_key_policy(DuplicateKeyPolicy::Error);
let cfg = LenientConfig {
base_config: base,
line_truncation: false, // isolate the Pass-2 behaviour
..LenientConfig::default()
};
let r = parse_lenient_with("a: 1\na: 2\nb: [unclosed\n", &cfg);
assert!(
r.errors.len() >= 2,
"strict + pass-2 errors both collected, got {:?}",
r.errors
);
}
#[test]
fn line_truncation_skips_whitespace_only_candidates() {
// Leading blank lines before unrecoverable garbage force the
// truncation loop to encounter whitespace-only prefixes, which it
// skips (`continue`) rather than re-parsing.
let cfg = LenientConfig::default();
let r = parse_lenient_with("\n\n\n{[garbage", &cfg);
// Best-effort recovery must not panic and reports the failure.
assert!(!r.errors.is_empty(), "unrecoverable garbage yields errors");
assert!(!r.is_complete);
}