use std::collections::{BTreeMap, BTreeSet, VecDeque};
use crate::rule_pack::OutputPolicy;
use super::bounded::{LineView, render_line};
const MAX_RECORDS_PER_CLASS: usize = 128;
const EXAMPLE_BUCKET_INDEX: usize = 4;
const COMPACT_SUCCESS_SUMMARY_BYTES: usize = 512;
#[derive(Clone, Copy, Debug, Eq, Ord, PartialEq, PartialOrd)]
pub enum EvidenceClass {
Outcome,
Diagnostic,
Structure,
Context,
Example,
Noise,
}
impl EvidenceClass {
const fn index(self) -> Option<usize> {
match self {
Self::Diagnostic => Some(0),
Self::Outcome => Some(1),
Self::Structure => Some(2),
Self::Context => Some(3),
Self::Example => Some(4),
Self::Noise => None,
}
}
const fn title(self) -> &'static str {
match self {
Self::Outcome => "outcome",
Self::Diagnostic => "diagnostics",
Self::Structure => "structure",
Self::Context => "diagnostic context",
Self::Example => "examples",
Self::Noise => "noise",
}
}
}
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub struct SourceSpan {
pub first_line: u64,
pub last_line: u64,
}
#[derive(Clone, Debug)]
struct EvidenceRecord {
span: SourceSpan,
body: Vec<u8>,
repeats: u64,
}
#[derive(Debug)]
struct Bucket {
class: EvidenceClass,
head: Vec<EvidenceRecord>,
tail: VecDeque<EvidenceRecord>,
head_bytes: usize,
tail_bytes: usize,
head_budget: usize,
tail_budget: usize,
total: u64,
fingerprints: BTreeSet<(u64, u64, usize)>,
first_omitted: Option<u64>,
last_omitted: Option<u64>,
}
impl Bucket {
fn new(class: EvidenceClass, budget: usize) -> Self {
let head_budget = budget / 2;
Self {
class,
head: Vec::new(),
tail: VecDeque::new(),
head_bytes: 0,
tail_bytes: 0,
head_budget,
tail_budget: budget.saturating_sub(head_budget),
total: 0,
fingerprints: BTreeSet::new(),
first_omitted: None,
last_omitted: None,
}
}
fn observe_repeat(&mut self, body: &[u8], span: SourceSpan) -> bool {
let fingerprint = record_fingerprint(body);
if !self.fingerprints.contains(&fingerprint) {
return false;
}
let Some(existing) = self
.head
.iter_mut()
.chain(self.tail.iter_mut())
.find(|existing| existing.body == body)
else {
return false;
};
self.total = self.total.saturating_add(1);
existing.repeats = existing.repeats.saturating_add(1);
existing.span.last_line = span.last_line;
true
}
fn observe(&mut self, mut record: EvidenceRecord) {
self.total = self.total.saturating_add(1);
let fingerprint = record_fingerprint(&record.body);
if self.fingerprints.contains(&fingerprint) {
if let Some(existing) = self
.head
.iter_mut()
.chain(self.tail.iter_mut())
.find(|existing| existing.body == record.body)
{
existing.repeats = existing.repeats.saturating_add(1);
existing.span.last_line = record.span.last_line;
return;
}
} else if self.fingerprints.len() < MAX_RECORDS_PER_CLASS {
self.fingerprints.insert(fingerprint);
}
record.repeats = 1;
if self.head.len() < MAX_RECORDS_PER_CLASS / 2
&& self.head_bytes.saturating_add(record.body.len()) <= self.head_budget
{
self.head_bytes = self.head_bytes.saturating_add(record.body.len());
self.head.push(record);
return;
}
if record.body.len() > self.tail_budget {
self.note_omitted(record.span);
return;
}
while self.tail.len() >= MAX_RECORDS_PER_CLASS / 2
|| self.tail_bytes.saturating_add(record.body.len()) > self.tail_budget
{
let Some(removed) = self.tail.pop_front() else {
break;
};
self.tail_bytes = self.tail_bytes.saturating_sub(removed.body.len());
self.note_omitted(removed.span);
}
if self.tail_bytes.saturating_add(record.body.len()) <= self.tail_budget {
self.tail_bytes = self.tail_bytes.saturating_add(record.body.len());
self.tail.push_back(record);
} else {
self.note_omitted(record.span);
}
}
fn note_omitted(&mut self, span: SourceSpan) {
self.first_omitted = Some(
self.first_omitted
.map_or(span.first_line, |current| current.min(span.first_line)),
);
self.last_omitted = Some(
self.last_omitted
.map_or(span.last_line, |current| current.max(span.last_line)),
);
}
fn render_ranked(
&self,
limit: usize,
newline: &[u8],
represented: &BTreeSet<u64>,
) -> RenderedBucket {
const OMISSION_RESERVE_BYTES: usize = 128;
if self.total == 0 {
return RenderedBucket::default();
}
let mut records = self.head.iter().chain(&self.tail).collect::<Vec<_>>();
records.sort_by_key(|record| record.span.first_line);
let represented_count = records
.iter()
.filter(|record| represented.contains(&record.span.first_line))
.count();
let candidates = records
.into_iter()
.filter(|record| !represented.contains(&record.span.first_line))
.collect::<Vec<_>>();
let mut complete = Vec::new();
append_section_heading(&mut complete, self.class, newline);
for record in &candidates {
render_record(&mut complete, record, newline);
}
append_omission(
&mut complete,
self.class,
self.total.saturating_sub(
u64::try_from(candidates.len().saturating_add(represented_count))
.unwrap_or(u64::MAX),
),
self.first_omitted,
self.last_omitted,
newline,
);
if complete.len() <= limit {
return RenderedBucket {
body: complete,
retained_lines: candidates
.iter()
.map(|record| record.span.first_line)
.collect(),
};
}
let heading_bytes = self.class.title().len().saturating_add(7 + newline.len());
if limit < heading_bytes.saturating_add(OMISSION_RESERVE_BYTES) {
return RenderedBucket::default();
}
let mut selection_order = Vec::with_capacity(candidates.len());
let (mut first, mut last) = (0_usize, candidates.len());
while first < last {
selection_order.push(first);
first += 1;
if first < last {
last -= 1;
selection_order.push(last);
}
}
let mut selected = BTreeSet::new();
let mut selected_bytes = heading_bytes;
for index in selection_order {
let mut rendered = Vec::new();
render_record(&mut rendered, candidates[index], newline);
if selected_bytes
.saturating_add(rendered.len())
.saturating_add(OMISSION_RESERVE_BYTES)
<= limit
{
selected_bytes = selected_bytes.saturating_add(rendered.len());
selected.insert(index);
}
}
let mut body = Vec::with_capacity(limit);
append_section_heading(&mut body, self.class, newline);
let mut retained_lines = Vec::with_capacity(selected.len());
let mut first_omitted = self.first_omitted;
let mut last_omitted = self.last_omitted;
for (index, record) in candidates.iter().enumerate() {
if selected.contains(&index) {
render_record(&mut body, record, newline);
retained_lines.push(record.span.first_line);
} else {
merge_omitted_range(&mut first_omitted, &mut last_omitted, record.span);
}
}
let represented_or_retained = represented_count.saturating_add(selected.len());
let omitted = self
.total
.saturating_sub(u64::try_from(represented_or_retained).unwrap_or(u64::MAX));
append_omission(
&mut body,
self.class,
omitted,
first_omitted,
last_omitted,
newline,
);
body.truncate(limit);
RenderedBucket {
body,
retained_lines,
}
}
}
#[derive(Debug, Default)]
struct RenderedBucket {
body: Vec<u8>,
retained_lines: Vec<u64>,
}
fn append_section_heading(output: &mut Vec<u8>, class: EvidenceClass, newline: &[u8]) {
output.extend_from_slice(format!("== {} ==", class.title()).as_bytes());
output.extend_from_slice(newline);
}
fn append_omission(
output: &mut Vec<u8>,
class: EvidenceClass,
omitted: u64,
first_omitted: Option<u64>,
last_omitted: Option<u64>,
newline: &[u8],
) {
if omitted == 0 {
return;
}
let range = match (first_omitted, last_omitted) {
(Some(first), Some(last)) => format!("; source lines {first}:{last}"),
_ => String::new(),
};
output.extend_from_slice(
format!("[yarp: omitted {omitted} {} line(s){range}]", class.title()).as_bytes(),
);
output.extend_from_slice(newline);
}
fn merge_omitted_range(first: &mut Option<u64>, last: &mut Option<u64>, span: SourceSpan) {
*first = Some(first.map_or(span.first_line, |current| current.min(span.first_line)));
*last = Some(last.map_or(span.last_line, |current| current.max(span.last_line)));
}
fn render_record(output: &mut Vec<u8>, record: &EvidenceRecord, newline: &[u8]) {
if record.span.first_line == record.span.last_line {
output.extend_from_slice(format!("L{}: ", record.span.first_line).as_bytes());
} else {
output.extend_from_slice(
format!("L{}-{}: ", record.span.first_line, record.span.last_line).as_bytes(),
);
}
output.extend_from_slice(strip_line_ending(&record.body));
if record.repeats > 1 {
output.extend_from_slice(format!(" [repeated {} times]", record.repeats).as_bytes());
}
output.extend_from_slice(newline);
}
fn example_key<'a>(family: &str, body: &'a [u8]) -> Option<&'a [u8]> {
let body = strip_line_ending(body);
let key = match family {
"search" | "build" => body.split(|byte| *byte == b':').next()?,
"test" => body
.windows(3)
.position(|window| window == b"...")
.map_or(body, |position| &body[..position]),
"list" => {
let item = body
.rsplit(u8::is_ascii_whitespace)
.find(|part| !part.is_empty())?;
let separator = item.iter().position(|byte| *byte == b'/')?;
&item[..separator]
}
_ => return None,
};
if key.is_empty() {
return None;
}
Some(&key[..key.len().min(128)])
}
fn record_fingerprint(body: &[u8]) -> (u64, u64, usize) {
let mut first = 0xcbf2_9ce4_8422_2325_u64;
let mut second = 0x9e37_79b9_7f4a_7c15_u64;
for byte in body {
first ^= u64::from(*byte);
first = first.wrapping_mul(0x0000_0100_0000_01b3);
second ^= u64::from(*byte).wrapping_add(0x9e37_79b9);
second = second.rotate_left(7).wrapping_mul(0xbf58_476d_1ce4_e5b9);
}
(first, second, body.len())
}
#[derive(Clone, Copy, Debug)]
pub struct RecoveryMarker<'a> {
pub archive_ref: &'a str,
pub source: &'a str,
pub completeness: &'a str,
}
#[derive(Debug)]
pub struct EvidenceCollector {
family: &'static str,
policy: OutputPolicy,
buckets: Vec<Bucket>,
total_lines: u64,
noise_lines: u64,
newline: Vec<u8>,
newline_observed: bool,
truncated_lines: u64,
priority_terms: [Option<EvidenceRecord>; 5],
example_keys: BTreeMap<(u64, u64, usize), Vec<u8>>,
}
impl EvidenceCollector {
#[must_use]
pub fn new(family: &'static str, policy: OutputPolicy) -> Self {
let classes = [
EvidenceClass::Diagnostic,
EvidenceClass::Outcome,
EvidenceClass::Structure,
EvidenceClass::Context,
EvidenceClass::Example,
];
let buckets = classes
.into_iter()
.map(|class| Bucket::new(class, policy.max_output_bytes))
.collect();
Self {
family,
policy,
buckets,
total_lines: 0,
noise_lines: 0,
newline: b"\n".to_vec(),
newline_observed: false,
truncated_lines: 0,
priority_terms: [const { None }; 5],
example_keys: BTreeMap::new(),
}
}
pub fn observe(&mut self, line_number: u64, line: &LineView, class: EvidenceClass) {
self.total_lines = self.total_lines.saturating_add(1);
if !self.newline_observed && !line.line_ending.is_empty() {
self.newline.clone_from(&line.line_ending);
self.newline_observed = true;
}
let source_term_in_bounds = super::classify::has_registered_diagnostic(&line.prefix)
|| (line.truncated && super::classify::has_registered_diagnostic(&line.tail_bytes()));
if class == EvidenceClass::Noise {
self.noise_lines = self.noise_lines.saturating_add(1);
if !source_term_in_bounds {
return;
}
}
let (body, truncated) = render_line(
line,
self.policy.max_line_bytes,
matches!(
class,
EvidenceClass::Diagnostic | EvidenceClass::Example | EvidenceClass::Noise
),
);
self.truncated_lines = self.truncated_lines.saturating_add(u64::from(truncated));
let span = SourceSpan {
first_line: line_number,
last_line: line_number,
};
if class == EvidenceClass::Example && !source_term_in_bounds {
if self
.buckets
.get_mut(EXAMPLE_BUCKET_INDEX)
.is_some_and(|bucket| bucket.observe_repeat(&body, span))
{
return;
}
if let Some(key) = example_key(self.family, &body) {
let fingerprint = record_fingerprint(key);
match self.example_keys.get(&fingerprint) {
Some(existing) if existing.as_slice() == key => {
self.noise_lines = self.noise_lines.saturating_add(1);
return;
}
None if self.example_keys.len() < MAX_RECORDS_PER_CLASS => {
self.example_keys.insert(fingerprint, key.to_vec());
}
Some(_) | None => {}
}
}
}
let record = EvidenceRecord {
span,
body,
repeats: 1,
};
if source_term_in_bounds {
for (slot, term) in self
.priority_terms
.iter_mut()
.zip(super::classify::REGISTERED_DIAGNOSTICS)
{
if slot.is_none() && super::classify::contains_ascii_insensitive(&record.body, term)
{
*slot = Some(diagnostic_representative(&record, term));
}
}
}
let Some(index) = class.index() else {
return;
};
self.buckets[index].observe(record);
}
#[must_use]
pub fn render(
self,
recovery: Option<RecoveryMarker<'_>>,
registered_diagnostics: [bool; 5],
success: bool,
) -> Vec<u8> {
let has_typed_diagnostics = self.buckets.first().is_some_and(|bucket| bucket.total > 0);
let mut priority_terms = self
.priority_terms
.iter()
.flatten()
.cloned()
.collect::<Vec<_>>();
priority_terms.sort_by_key(|record| record.span.first_line);
priority_terms.dedup_by_key(|record| record.span.first_line);
let represented = priority_terms
.iter()
.map(|record| record.span.first_line)
.collect::<BTreeSet<_>>();
let source_term_samples = render_source_term_samples(&priority_terms, &self.newline);
let mandatory_bytes = source_term_samples.len();
let registered = registered_diagnostics
.into_iter()
.zip(["failure", "panic", "error", "warning", "test result"])
.filter_map(|(present, term)| present.then_some(term))
.collect::<Vec<_>>();
let diagnostic_suffix = if registered.is_empty() {
String::new()
} else {
format!("; source_terms={}", registered.join(","))
};
let provisional_prefix = render_summary_prefix(
self.family,
self.total_lines,
&diagnostic_suffix,
self.total_lines,
self.truncated_lines,
recovery,
&self.newline,
);
let compact_limit = self
.policy
.max_output_bytes
.min(COMPACT_SUCCESS_SUMMARY_BYTES);
let compact = success
&& !has_typed_diagnostics
&& registered.is_empty()
&& priority_terms.is_empty()
&& provisional_prefix.len().saturating_add(mandatory_bytes) <= compact_limit;
let output_limit = if compact {
compact_limit
} else {
self.policy.max_output_bytes
};
let structural_markers = render_structural_markers(
self.noise_lines,
self.truncated_lines,
&self.newline,
recovery.is_none(),
);
let available = output_limit
.saturating_sub(provisional_prefix.len())
.saturating_sub(mandatory_bytes);
let (sections, omitted) = self.render_ranked_sections(
available,
&represented,
&source_term_samples,
&structural_markers,
);
let prefix = render_summary_prefix(
self.family,
self.total_lines,
&diagnostic_suffix,
omitted,
self.truncated_lines,
recovery,
&self.newline,
);
let mut output = Vec::with_capacity(output_limit.min(64 * 1024));
output.extend_from_slice(&prefix);
output.extend_from_slice(§ions);
if output.len() > output_limit {
output.truncate(output_limit);
}
output
}
fn render_ranked_sections(
&self,
mut available: usize,
represented: &BTreeSet<u64>,
source_term_samples: &[u8],
structural_markers: &[u8],
) -> (Vec<u8>, u64) {
let mut sections = Vec::with_capacity(available.min(64 * 1024));
let mut retained_lines = represented.iter().copied().collect::<Vec<_>>();
for class in [
EvidenceClass::Outcome,
EvidenceClass::Diagnostic,
EvidenceClass::Context,
] {
append_ranked_class(
&self.buckets,
class,
&mut sections,
&mut retained_lines,
&mut available,
&self.newline,
represented,
);
}
sections.extend_from_slice(source_term_samples);
append_ranked_class(
&self.buckets,
EvidenceClass::Structure,
&mut sections,
&mut retained_lines,
&mut available,
&self.newline,
represented,
);
if structural_markers.len() <= available {
available = available.saturating_sub(structural_markers.len());
sections.extend_from_slice(structural_markers);
}
append_ranked_class(
&self.buckets,
EvidenceClass::Example,
&mut sections,
&mut retained_lines,
&mut available,
&self.newline,
represented,
);
retained_lines.sort_unstable();
retained_lines.dedup();
let omitted = self
.total_lines
.saturating_sub(u64::try_from(retained_lines.len()).unwrap_or(u64::MAX));
(sections, omitted)
}
}
fn append_ranked_class(
buckets: &[Bucket],
class: EvidenceClass,
output: &mut Vec<u8>,
retained_lines: &mut Vec<u64>,
available: &mut usize,
newline: &[u8],
represented: &BTreeSet<u64>,
) {
let Some(bucket) = buckets.iter().find(|bucket| bucket.class == class) else {
return;
};
let rendered = bucket.render_ranked(*available, newline, represented);
*available = available.saturating_sub(rendered.body.len());
output.extend_from_slice(&rendered.body);
retained_lines.extend(rendered.retained_lines);
}
fn render_source_term_samples(priority_terms: &[EvidenceRecord], newline: &[u8]) -> Vec<u8> {
let mut output = Vec::new();
if !priority_terms.is_empty() {
output.extend_from_slice(b"== source term samples ==");
output.extend_from_slice(newline);
for record in priority_terms {
render_record(&mut output, record, newline);
}
}
output
}
fn render_structural_markers(
noise_lines: u64,
truncated_lines: u64,
newline: &[u8],
include: bool,
) -> Vec<u8> {
let mut output = Vec::new();
if !include {
return output;
}
if noise_lines > 0 {
output
.extend_from_slice(format!("[yarp: omitted {noise_lines} routine line(s)]").as_bytes());
output.extend_from_slice(newline);
}
if truncated_lines > 0 {
output.extend_from_slice(
format!("[yarp: truncated {truncated_lines} retained line(s)]").as_bytes(),
);
output.extend_from_slice(newline);
}
output
}
fn render_summary_prefix(
family: &str,
total_lines: u64,
diagnostic_suffix: &str,
omitted: u64,
truncated: u64,
recovery: Option<RecoveryMarker<'_>>,
newline: &[u8],
) -> Vec<u8> {
let mut output = Vec::new();
output.extend_from_slice(
format!("[yarp summary: {family}; source_lines={total_lines}{diagnostic_suffix}]")
.as_bytes(),
);
output.extend_from_slice(newline);
if omitted > 0 || truncated > 0 || recovery.is_some() {
append_recovery_marker(&mut output, newline, omitted, truncated, recovery);
}
output
}
fn diagnostic_representative(record: &EvidenceRecord, term: &[u8]) -> EvidenceRecord {
const MAX_REPRESENTATIVE_BYTES: usize = 32;
let body = strip_line_ending(&record.body);
if body.len() <= MAX_REPRESENTATIVE_BYTES {
return record.clone();
}
let position = body
.windows(term.len())
.position(|window| {
window
.iter()
.zip(term)
.all(|(left, right)| left.eq_ignore_ascii_case(right))
})
.unwrap_or(0);
let prefix = position.saturating_sub(24);
let end = prefix
.saturating_add(MAX_REPRESENTATIVE_BYTES)
.min(body.len());
let mut excerpt = Vec::with_capacity(MAX_REPRESENTATIVE_BYTES + 12);
if prefix > 0 {
excerpt.extend_from_slice(b"[...] ");
}
excerpt.extend_from_slice(&body[prefix..end]);
if end < body.len() {
excerpt.extend_from_slice(b" [...]");
}
EvidenceRecord {
span: record.span,
body: excerpt,
repeats: record.repeats,
}
}
fn append_recovery_marker(
output: &mut Vec<u8>,
newline: &[u8],
omitted: u64,
truncated: u64,
recovery: Option<RecoveryMarker<'_>>,
) {
let description = if omitted == 0 && truncated == 0 {
"exact output archived".to_owned()
} else if truncated == 0 {
format!("omitted {omitted} line(s)")
} else {
format!("omitted {omitted} line(s), truncated {truncated} line(s)")
};
if let Some(recovery) = recovery {
output.extend_from_slice(
format!(
"[yarp: {description}; ref={}; {} {}]",
recovery.archive_ref, recovery.source, recovery.completeness
)
.as_bytes(),
);
output.extend_from_slice(newline);
output.extend_from_slice(
format!(
"Search omitted output: yarp search {} 'term|alternate'",
recovery.archive_ref
)
.as_bytes(),
);
output.extend_from_slice(newline);
} else {
output.extend_from_slice(format!("[yarp: {description}]").as_bytes());
output.extend_from_slice(newline);
}
}
fn strip_line_ending(body: &[u8]) -> &[u8] {
body.strip_suffix(b"\r\n")
.or_else(|| body.strip_suffix(b"\n"))
.unwrap_or(body)
}
#[cfg(test)]
mod tests {
use std::collections::VecDeque;
use super::*;
fn line(value: &str) -> LineView {
LineView {
prefix: value.as_bytes().to_vec(),
tail: VecDeque::from(value.as_bytes().to_vec()),
line_ending: if value.ends_with("\r\n") {
b"\r\n".to_vec()
} else if value.ends_with('\n') {
b"\n".to_vec()
} else {
Vec::new()
},
total_bytes: value.len(),
truncated: false,
}
}
fn policy() -> OutputPolicy {
OutputPolicy {
max_line_bytes: 256,
max_output_bytes: 4_096,
min_savings_bytes: 8,
min_savings_basis_points: 1_000,
}
}
#[test]
fn renders_typed_sections_and_copyable_recovery() {
let mut collector = EvidenceCollector::new("test", policy());
collector.observe(1, &line("test one ... ok\r\n"), EvidenceClass::Noise);
collector.observe(2, &line("error: failed\n"), EvidenceClass::Diagnostic);
collector.observe(3, &line("test result: FAILED\n"), EvidenceClass::Outcome);
let output = String::from_utf8(collector.render(
Some(RecoveryMarker {
archive_ref: "yr_0123456789abcdef0123456789abcdef",
source: "stderr",
completeness: "complete",
}),
[false; 5],
false,
))
.expect("UTF-8");
assert!(output.contains("== outcome ==\r\n"));
assert!(output.contains("L2: error: failed"));
assert!(output.contains("yarp search yr_0123456789abcdef0123456789abcdef"));
}
#[test]
fn changed_output_keeps_recovery_even_when_no_line_is_omitted() {
let mut collector = EvidenceCollector::new("test", policy());
collector.observe(1, &line("error: failed\n"), EvidenceClass::Diagnostic);
let output = String::from_utf8(collector.render(
Some(RecoveryMarker {
archive_ref: "yr_0123456789abcdef0123456789abcdef",
source: "stderr",
completeness: "complete",
}),
[false; 5],
false,
))
.expect("UTF-8");
assert!(
output
.contains("[yarp: exact output archived; ref=yr_0123456789abcdef0123456789abcdef")
);
assert!(
output
.contains("Search omitted output: yarp search yr_0123456789abcdef0123456789abcdef")
);
}
#[test]
fn compact_output_keeps_the_complete_recovery_instruction() {
let mut compact = policy();
compact.max_output_bytes = 704;
let mut collector = EvidenceCollector::new("search", compact);
for index in 0..1_000 {
collector.observe(
index + 1,
&line(&format!("src/file{}.rs:{index}: match\n", index % 40)),
EvidenceClass::Example,
);
}
let output = collector.render(
Some(RecoveryMarker {
archive_ref: "yr_0123456789abcdef0123456789abcdef",
source: "result_text",
completeness: "unknown",
}),
[false; 5],
true,
);
let text = String::from_utf8_lossy(&output);
assert!(output.len() <= COMPACT_SUCCESS_SUMMARY_BYTES);
assert!(text.contains(
"Search omitted output: yarp search yr_0123456789abcdef0123456789abcdef 'term|alternate'"
));
assert!(text.contains("L1: src/file0.rs:0: match"));
}
#[test]
fn source_term_samples_disable_the_compact_cap_without_tracker_matches() {
let mut compact = policy();
compact.max_output_bytes = 704;
let mut collector = EvidenceCollector::new("test", compact);
for (index, value) in [
"failure from source text",
"panic from source text",
"error from source text",
"warning from source text",
"test result from source text",
]
.into_iter()
.enumerate()
{
collector.observe(
u64::try_from(index + 1).expect("line"),
&line(&format!("prefix {value} with enough surrounding detail\n")),
EvidenceClass::Example,
);
}
let output = String::from_utf8_lossy(&collector.render(
Some(RecoveryMarker {
archive_ref: "yr_0123456789abcdef0123456789abcdef",
source: "result_text",
completeness: "complete",
}),
[false; 5],
true,
))
.to_ascii_lowercase();
for term in ["failure", "panic", "error", "warning", "test result"] {
assert!(output.contains(term), "missing {term}: {output}");
}
assert!(output.len() <= 704);
}
#[test]
fn keeps_one_source_line_for_every_registered_diagnostic_category() {
let mut compact = policy();
compact.max_output_bytes = 704;
let mut collector = EvidenceCollector::new("test", compact);
for index in 0..100 {
collector.observe(
index + 1,
&line(&format!("error: repeated {index}\n")),
EvidenceClass::Diagnostic,
);
}
for (offset, value) in [
"warning: late\n",
"panic: late\n",
"failure: late\n",
"test result: FAILED\n",
]
.into_iter()
.enumerate()
{
collector.observe(
u64::try_from(101 + offset).expect("line"),
&line(value),
EvidenceClass::Diagnostic,
);
}
let output = String::from_utf8_lossy(&collector.render(
Some(RecoveryMarker {
archive_ref: "yr_0123456789abcdef0123456789abcdef",
source: "result_text",
completeness: "complete",
}),
[true; 5],
true,
))
.to_ascii_lowercase();
for term in ["error", "warning", "panic", "failure", "test result"] {
assert!(output.contains(term), "missing {term}: {output}");
}
assert!(output.contains("yarp search yr_0123456789abcdef0123456789abcdef"));
assert!(output.len() <= 704);
}
#[test]
fn collapses_exact_repetition_with_a_bounded_counter() {
let mut collector = EvidenceCollector::new("list", policy());
for index in 0..1_000 {
collector.observe(index + 1, &line("same record\n"), EvidenceClass::Example);
}
let output = String::from_utf8(collector.render(None, [false; 5], true)).expect("UTF-8");
assert!(output.contains("repeated 1000 times"));
assert_eq!(output.matches("same record").count(), 1);
}
#[test]
fn ranks_outcomes_before_diagnostics_and_examples() {
let mut collector = EvidenceCollector::new("test", policy());
collector.observe(1, &line("example row\n"), EvidenceClass::Example);
collector.observe(2, &line("error: failed\n"), EvidenceClass::Diagnostic);
collector.observe(3, &line("test result: FAILED\n"), EvidenceClass::Outcome);
let output = String::from_utf8(collector.render(None, [false; 5], false)).expect("UTF-8");
assert!(
output.find("== outcome ==").expect("outcome")
< output.find("== diagnostics ==").expect("diagnostics")
);
assert!(
output.find("== diagnostics ==").expect("diagnostics")
< output
.find("== source term samples ==")
.expect("source term samples")
);
assert!(
output
.find("== source term samples ==")
.expect("source term samples")
< output.find("== examples ==").expect("examples")
);
}
#[test]
fn prefers_different_search_files() {
let mut collector = EvidenceCollector::new("search", policy());
for index in 0..100 {
collector.observe(
index + 1,
&line(&format!("src/one.rs:{index}: match {index}\n")),
EvidenceClass::Example,
);
}
collector.observe(
101,
&line("src/two.rs:1: another match\n"),
EvidenceClass::Example,
);
let output = String::from_utf8(collector.render(None, [false; 5], true)).expect("UTF-8");
assert!(output.contains("src/one.rs"));
assert!(output.contains("src/two.rs"));
}
#[test]
fn prefers_different_list_groups() {
let mut collector = EvidenceCollector::new("list", policy());
collector.observe(1, &line("group/one\n"), EvidenceClass::Example);
collector.observe(2, &line("group/two\n"), EvidenceClass::Example);
collector.observe(3, &line("other/three\n"), EvidenceClass::Example);
let output = String::from_utf8(collector.render(None, [false; 5], true)).expect("UTF-8");
assert!(output.contains("group/one"));
assert!(!output.contains("group/two"));
assert!(output.contains("other/three"));
}
#[test]
fn collector_memory_is_bounded_by_record_and_byte_budgets() {
let mut collector = EvidenceCollector::new("list", policy());
for index in 0..10_000 {
collector.observe(
index + 1,
&line(&format!("record {index}\n")),
EvidenceClass::Example,
);
}
let output = collector.render(None, [false; 5], true);
assert!(output.len() <= policy().max_output_bytes);
assert!(String::from_utf8_lossy(&output).contains("omitted"));
}
}