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Add some tests and fix some corner cases

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This commit is contained in:
ManyTheFish 2022-03-29 14:51:02 +02:00
parent 844f546a8b
commit 4428cb5909
1 changed files with 109 additions and 9 deletions
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118
milli/src/search/matches/mod.rs
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@ -158,9 +158,13 @@ impl<'t> Matcher<'t, '_> {
let last_match_word_position = matches.last().map(|m| m.word_position).unwrap_or(0);
let last_match_token_position = matches.last().map(|m| m.token_position).unwrap_or(0);
// TODO: buggy if no match and fisrt token is a sepparator
// TODO: buggy if no match and first token is a sepparator
let mut remaining_words =
self.crop_size + first_match_word_position - last_match_word_position - 1;
self.crop_size + first_match_word_position - last_match_word_position;
// if first token is a word, then remove 1 to remaining_words.
if let Some(None) = self.tokens.get(first_match_token_position).map(|t| t.is_separator()) {
remaining_words -= 1;
}
let mut first_token_position = first_match_token_position;
let mut last_token_position = last_match_token_position;
@ -204,18 +208,21 @@ impl<'t> Matcher<'t, '_> {
}
}
}
// the end of the text is reached, advance left.
(Some(ft), None) => {
first_token_position -= 1;
if ft.is_separator().is_none() {
remaining_words -= 1;
}
}
// the start of the text is reached, advance right.
(None, Some(lt)) => {
last_token_position += 1;
if lt.is_separator().is_none() {
remaining_words -= 1;
}
}
// no more token to add.
(None, None) => break,
}
}
@ -263,13 +270,14 @@ impl<'t> Matcher<'t, '_> {
fn find_best_match_interval<'a>(&self, matches: &'a [Match]) -> &'a [Match] {
if matches.len() > 1 {
let mut best_interval = (0, 1);
let mut best_interval_score = self.match_interval_score(&matches[0..=1]);
let mut best_interval = (0, 0);
let mut best_interval_score = self.match_interval_score(&matches[0..=0]);
let mut interval_first = 0;
let mut interval_last = 1;
for (index, next_match) in matches.iter().enumerate().skip(2) {
let mut interval_last = 0;
for (index, next_match) in matches.iter().enumerate().skip(1) {
// if next match would make interval gross more than crop_size
if next_match.word_position - matches[interval_first].word_position > self.crop_size
if next_match.word_position - matches[interval_first].word_position
>= self.crop_size
{
let interval_score =
self.match_interval_score(&matches[interval_first..=interval_last]);
@ -282,7 +290,7 @@ impl<'t> Matcher<'t, '_> {
// advance start of the interval while interval is longer than crop_size
while next_match.word_position - matches[interval_first].word_position
> self.crop_size
>= self.crop_size
{
interval_first += 1;
}
@ -307,10 +315,15 @@ impl<'t> Matcher<'t, '_> {
let (first_token_position, last_token_position) = self.token_crop_bounds(match_interval);
(self.tokens[first_token_position].byte_start, self.tokens[last_token_position].byte_end)
let byte_start = self.tokens.get(first_token_position).map_or(0, |t| t.byte_start);
let byte_end = self.tokens.get(last_token_position).map_or(byte_start, |t| t.byte_end);
(byte_start, byte_end)
}
pub fn format(&mut self, highlight: bool, crop: bool) -> Cow<'t, str> {
// If 0 it will be considered null and thus not crop the field
// https://github.com/meilisearch/specifications/pull/120#discussion_r836536295
let crop = crop && self.crop_size > 0;
if !highlight && !crop {
// compute matches is not needed if no highlight or crop is requested.
Cow::Borrowed(self.text)
@ -444,6 +457,20 @@ mod tests {
let highlight = true;
let crop = false;
// empty text.
let text = "";
let analyzed = analyzer.analyze(&text);
let tokens: Vec<_> = analyzed.tokens().collect();
let mut matcher = builder.build(&tokens[..], text);
assert_eq!(&matcher.format(highlight, crop), "");
// text containing only separators.
let text = ":-)";
let analyzed = analyzer.analyze(&text);
let tokens: Vec<_> = analyzed.tokens().collect();
let mut matcher = builder.build(&tokens[..], text);
assert_eq!(&matcher.format(highlight, crop), ":-)");
// Text without any match.
let text = "A quick brown fox can not jump 32 feet, right? Brr, it is cold!";
let analyzed = analyzer.analyze(&text);
@ -482,6 +509,20 @@ mod tests {
let highlight = false;
let crop = true;
// empty text.
let text = "";
let analyzed = analyzer.analyze(&text);
let tokens: Vec<_> = analyzed.tokens().collect();
let mut matcher = builder.build(&tokens[..], text);
assert_eq!(&matcher.format(highlight, crop), "");
// text containing only separators.
let text = ":-)";
let analyzed = analyzer.analyze(&text);
let tokens: Vec<_> = analyzed.tokens().collect();
let mut matcher = builder.build(&tokens[..], text);
assert_eq!(&matcher.format(highlight, crop), ":-)");
// Text without any match.
let text = "A quick brown fox can not jump 32 feet, right? Brr, it is cold!";
let analyzed = analyzer.analyze(&text);
@ -493,6 +534,17 @@ mod tests {
"A quick brown fox can not jump 32 feet, right? …"
);
// Text without any match starting by a separator.
let text = "(A quick brown fox can not jump 32 feet, right? Brr, it is cold!)";
let analyzed = analyzer.analyze(&text);
let tokens: Vec<_> = analyzed.tokens().collect();
let mut matcher = builder.build(&tokens[..], text);
// no highlight should return 10 first words with a marker at the end.
assert_eq!(
&matcher.format(highlight, crop),
"(A quick brown fox can not jump 32 feet, right? …"
);
// Test phrase propagation
let text = "Natalie risk her future. Split The World is a book written by Emily Henry. I never read it.";
let analyzed = analyzer.analyze(&text);
@ -570,6 +622,20 @@ mod tests {
let highlight = true;
let crop = true;
// empty text.
let text = "";
let analyzed = analyzer.analyze(&text);
let tokens: Vec<_> = analyzed.tokens().collect();
let mut matcher = builder.build(&tokens[..], text);
assert_eq!(&matcher.format(highlight, crop), "");
// text containing only separators.
let text = ":-)";
let analyzed = analyzer.analyze(&text);
let tokens: Vec<_> = analyzed.tokens().collect();
let mut matcher = builder.build(&tokens[..], text);
assert_eq!(&matcher.format(highlight, crop), ":-)");
// Text without any match.
let text = "A quick brown fox can not jump 32 feet, right? Brr, it is cold!";
let analyzed = analyzer.analyze(&text);
@ -611,4 +677,38 @@ mod tests {
"…void void void void void <em>split</em> <em>the</em> <em>world</em> void void"
);
}
#[test]
fn smaller_crop_size() {
//! testing: https://github.com/meilisearch/specifications/pull/120#discussion_r836536295
let query_tree = query_tree();
let mut builder = MatcherBuilder::from_query_tree(&query_tree);
let analyzer = Analyzer::new(AnalyzerConfig::<Vec<u8>>::default());
let highlight = false;
let crop = true;
let text = "void void split the world void void.";
let analyzed = analyzer.analyze(&text);
let tokens: Vec<_> = analyzed.tokens().collect();
// set a smaller crop size
builder.crop_size(2);
let mut matcher = builder.build(&tokens[..], text);
// because crop size < query size, partially format matches.
assert_eq!(&matcher.format(highlight, crop), "…split the …");
// set a smaller crop size
builder.crop_size(1);
let mut matcher = builder.build(&tokens[..], text);
// because crop size < query size, partially format matches.
assert_eq!(&matcher.format(highlight, crop), "…split …");
// set a smaller crop size
builder.crop_size(0);
let mut matcher = builder.build(&tokens[..], text);
// because crop size is 0, crop is ignored.
assert_eq!(&matcher.format(highlight, crop), "void void split the world void void.");
}
}