MeiliSearch/milli/tests/search/phrase_search.rs

use milli::update::{IndexerConfig, Settings};
use milli::{Criterion, Index, Search, TermsMatchingStrategy};

use crate::search::Criterion::{Attribute, Exactness, Proximity};

fn set_stop_words(index: &Index, stop_words: &[&str]) {
    let mut wtxn = index.write_txn().unwrap();
    let config = IndexerConfig::default();

    let mut builder = Settings::new(&mut wtxn, index, &config);
    let stop_words = stop_words.iter().map(|s| s.to_string()).collect();
    builder.set_stop_words(stop_words);
    builder.execute(|_| (), || false).unwrap();
    wtxn.commit().unwrap();
}

fn test_phrase_search_with_stop_words_given_criteria(criteria: &[Criterion]) {
    let index = super::setup_search_index_with_criteria(criteria);

    // Add stop_words
    set_stop_words(&index, &["a", "an", "the", "of"]);

    // Phrase search containing stop words
    let txn = index.read_txn().unwrap();

    let mut search = Search::new(&txn, &index);
    search.query("\"the use of force\"");
    search.limit(10);
    search.authorize_typos(false);
    search.terms_matching_strategy(TermsMatchingStrategy::All);

    let result = search.execute().unwrap();
    // 1 document should match
    assert_eq!(result.documents_ids.len(), 1);

    // test for a single stop word only, no other search terms
    let mut search = Search::new(&txn, &index);
    search.query("\"the\"");
    search.limit(10);
    search.authorize_typos(false);
    search.terms_matching_strategy(TermsMatchingStrategy::All);
    let result = search.execute().unwrap();
    assert_eq!(result.documents_ids.len(), 0);
}

#[test]
fn test_phrase_search_with_stop_words_no_criteria() {
    let criteria = [];
    test_phrase_search_with_stop_words_given_criteria(&criteria);
}

#[test]
fn test_phrase_search_with_stop_words_all_criteria() {
    let criteria = [Proximity, Attribute, Exactness];
    test_phrase_search_with_stop_words_given_criteria(&criteria);
}